diff --git a/marked/F/T-REC-F.1-199803-I_PDF-E/raw.md b/marked/F/T-REC-F.1-199803-I_PDF-E/raw.md new file mode 100644 index 0000000000000000000000000000000000000000..dbc0d51f207fe4e168e400342bf1edcf7d536516 --- /dev/null +++ b/marked/F/T-REC-F.1-199803-I_PDF-E/raw.md @@ -0,0 +1,1981 @@ + + +![ITU logo: A globe with the letters ITU and a lightning bolt.](2dfa6ac3edfe874f68aa0cbccaa42322_img.jpg) + +ITU logo: A globe with the letters ITU and a lightning bolt. + +INTERNATIONAL TELECOMMUNICATION UNION + +**ITU-T** + +TELECOMMUNICATION +STANDARDIZATION SECTOR +OF ITU + +**F.1** + +(03/98) + +# **SERIES F: NON-TELEPHONE TELECOMMUNICATION SERVICES** + +Telegraph service – Operating methods for the +international public telegram service + +## --- **Operational provisions for the international public telegram service** + +ITU-T Recommendation F.1 + +(Previously CCITT Recommendation) + +--- + +## ITU-T F-SERIES RECOMMENDATIONS **NON-TELEPHONE TELECOMMUNICATION SERVICES** + +| | | +|------------------------------------------------------------------------|-----------------| +| TELEGRAPH SERVICE | F.1–F.109 | +| Operating methods for the international public telegram service | F.1–F.19 | +| The gentex network | F.20–F.29 | +| Message switching | F.30–F.39 | +| The international telemessage service | F.40–F.58 | +| The international telex service | F.59–F.89 | +| Statistics and publications on international telegraph services | F.90–F.99 | +| Scheduled and leased communication services | F.100–F.104 | +| Phototelegraph service | F.105–F.109 | +| MOBILE SERVICE | F.110–F.159 | +| Mobile services and multdestination satellite services | F.110–F.159 | +| TELEMATIC SERVICES | F.160–F.399 | +| Public facsimile service | F.160–F.199 | +| Teletex service | F.200–F.299 | +| Videotex service | F.300–F.349 | +| General provisions for telematic services | F.350–F.399 | +| MESSAGE HANDLING SERVICES | F.400–F.499 | +| DIRECTORY SERVICES | F.500–F.549 | +| DOCUMENT COMMUNICATION | F.550–F.599 | +| Document communication | F.550–F.579 | +| Programming communication interfaces | F.580–F.599 | +| DATA TRANSMISSION SERVICES | F.600–F.699 | +| AUDIOVISUAL SERVICES | F.700–F.799 | +| ISDN SERVICES | F.800–F.849 | +| UNIVERSAL PERSONAL TELECOMMUNICATION | F.850–F.899 | +| HUMAN FACTORS | F.900–F.999 | + +*For further details, please refer to ITU-T List of Recommendations.* + +## **ITU-T RECOMMENDATION F.1** + +## **OPERATIONAL PROVISIONS FOR THE INTERNATIONAL PUBLIC TELEGRAM SERVICE** + +###### **Source** + +ITU-T Recommendation F.1 was revised by ITU-T Study Group 2 (1997-2000) and was approved under the WTSC Resolution No. 1 procedure on the 9th of March 1998. + +### FOREWORD + +ITU (International Telecommunication Union) is the United Nations Specialized Agency in the field of telecommunications. The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of the ITU. The ITU-T is responsible for studying technical, operating and tariff questions and issuing Recommendations on them with a view to standardizing telecommunications on a worldwide basis. + +The World Telecommunication Standardization Conference (WTSC), which meets every four years, establishes the topics for study by the ITU-T Study Groups which, in their turn, produce Recommendations on these topics. + +The approval of Recommendations by the Members of the ITU-T is covered by the procedure laid down in WTSC Resolution No. 1. + +In some areas of information technology which fall within ITU-T's purview, the necessary standards are prepared on a collaborative basis with ISO and IEC. + +### NOTE + +In this Recommendation, the expression "Administration" is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. + +### INTELLECTUAL PROPERTY RIGHTS + +The ITU draws attention to the possibility that the practice or implementation of this Recommendation may involve the use of a claimed Intellectual Property Right. The ITU takes no position concerning the evidence, validity or applicability of claimed Intellectual Property Rights, whether asserted by ITU members or others outside of the Recommendation development process. + +As of the date of approval of this Recommendation, the ITU had not received notice of intellectual property, protected by patents, which may be required to implement this Recommendation. However, implementors are cautioned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent database. + +© ITU 1998 + +All rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the ITU. + +### CONTENTS + +###### Page + +| | | +|----------------------------------------------------------------------------------------|----| +| DIVISION A – GENERAL PROVISIONS APPLYING TO ALL METHODS OF WORKING..... | 2 | +| I. Hours of service of offices ..... | 2 | +| 1 Duration and closing of service – Legal time..... | 2 | +| II. Classification of correspondence in the international public telegram service..... | 2 | +| 1 Telegrams and special services ..... | 2 | +| 1.1 Obligatory telegrams ..... | 2 | +| 1.2 Optional telegrams and special services..... | 3 | +| III. Preparation and handing in of telegrams..... | 4 | +| 1 General ..... | 4 | +| 2 Characters that may be used for the preparation of telegrams..... | 4 | +| 3 Order of arrangement of the various parts of a telegram..... | 5 | +| 4 Heading ..... | 5 | +| 5 The address part..... | 6 | +| 5.1 The service indications..... | 6 | +| 5.2 General provisions for the address ..... | 6 | +| 5.3 Full postal address..... | 7 | +| 5.4 Registered address..... | 8 | +| 5.5 Telephonic address..... | 8 | +| 5.6 Telex and facsimile addresses ..... | 9 | +| 5.6.1 Telex address..... | 9 | +| 5.6.2 Facsimile address ..... | 9 | +| 5.7 Poste restante or télégraphe restant address ..... | 9 | +| 5.8 Post office box address..... | 9 | +| 6 The text part ..... | 10 | +| 6.1 The text..... | 10 | +| 6.2 The signature ..... | 10 | +| 6.3 Long telegrams ..... | 10 | +| 7 Cancellation of telegrams at the request of the sender ..... | 11 | +| IV. Counting of words ..... | 11 | +| 1 General provisions..... | 11 | + +| | Page | +|-------|------------------------------------------------------------------------------------------------------------| +| 2 | Counting the number of chargeable words..... 12 | +| 3 | Indication of the number of words in the preamble line ..... 12 | +| 4 | Irregularities in the counting of words ..... 12 | +| V. | Routing and retransmission of telegrams ..... 12 | +| VI. | Transmission of telegrams..... 13 | +| 1 | Order of transmission of telegrams ..... 13 | +| 2 | Order of transmission of the various parts of a telegram ..... 13 | +| 3 | Transmission of the heading..... 13 | +| 4 | Transmission of the other parts of a telegram ..... 14 | +| 5 | Reception..... 14 | +| 6 | Errors and interruptions..... 14 | +| VII. | Interruption of telegram communications ..... 15 | +| 1 | Diversion of telegrams ..... 15 | +| VIII. | Delivery at destination..... 15 | +| 1 | General provisions..... 15 | +| 2 | Methods of delivery..... 16 | +| 3 | Non-delivery and delayed delivery..... 17 | +| IX. | Obligatory telegrams ..... 18 | +| 1 | Telegrams relating to the safety of life (SVH) ..... 18 | +| 2 | Government telegrams and telegrams relative to the application of the United Nations Charter..... 18 | +| 3 | Telegrams concerning persons protected in time of war by the Geneva Conventions of 12 August 1949 ..... 20 | +| 4 | Ordinary private telegrams..... 20 | +| 5 | Telegraph service correspondence..... 21 | +| 6 | Meteorological telegrams ..... 21 | +| X. | Optional telegrams ..... 21 | +| 1 | Postal financial telegrams..... 21 | +| 2 | Letter telegrams..... 21 | +| 3 | Privilege telegrams ..... 22 | + +| | Page | +|-----------------------------------------------------------------------------------------------|-------------| +| XI. Special services ..... | 22 | +| 1 General provisions..... | 22 | +| 2 Urgent transmission and delivery..... | 22 | +| 3 De luxe form..... | 23 | +| XII. Stoppage of telegrams ..... | 23 | +| 1 Transmission of certain telegrams as of right – Notification of stoppage..... | 23 | +| XIII. Archives..... | 23 | +| 1 Archives..... | 23 | +| 2 Inspection of original forms of telegrams – Supplying copies of telegrams..... | 24 | +| DIVISION B – OPERATIONAL PROVISIONS APPLYING TO MORSE AND
SOUNDER WORKING.....
| 25 | +| I. Morse code ..... | 25 | +| 1 Morse code signals ..... | 25 | +| 2 Spacing and length of the signals..... | 26 | +| 3 Transmission of signs for which there is no corresponding signal
in the Morse code ..... | 26 | +| 3.2 Multiplication sign ..... | 26 | +| 3.3 Percentage or per thousand sign..... | 26 | +| 3.4 Inverted commas (quotation marks)..... | 26 | +| 3.5 Minute and second signs ..... | 27 | +| 4 Transmission of groups of figures and letters, of ordinal numbers or of fractions .... | 27 | +| II. General transmission rules ..... | 27 | +| III. Transmission of telegrams with identical text..... | 28 | +| 1 Identical texts ..... | 28 | +| IV. Transmission irregularities – Service notes..... | 28 | +| V. Checking the number of words transmitted – Acknowledgement of receipt..... | 29 | +| 1 Checking the number of words transmitted ..... | 29 | +| 2 Acknowledgement of receipt..... | 29 | +| VI. Transmission procedures..... | 29 | + +| | | +|-------------------------------------------------------------------------------------------------------------------|----| +| DIVISION C – OPERATIONAL PROVISIONS APPLYING TO PRINTING TELEGRAPH SYSTEMS..... | 31 | +| I. Transmission signals ..... | 31 | +| 1 Transmission signals of International Telegraph Alphabet No. 2..... | 31 | +| 2 Transmission of signs for which there is no corresponding signal in the telegraph alphabet ..... | 32 | +| 3 Transmission of ordinal numbers, groups of figures and letters or of numbers that include fractions ..... | 32 | +| II. General provisions for transmission of telegrams..... | 33 | +| 1 Calling ..... | 33 | +| 2 Transmission with running series of numbers..... | 33 | +| III. General provisions for reception ..... | 33 | +| IV. Special provisions for point-to-point operations ..... | 34 | +| 1 Transmission of telegrams to tape-printing systems ..... | 34 | +| 2 Transmission of telegrams to page-printing systems ..... | 34 | +| 3 Reception..... | 36 | +| V. Special provisions for gentex operations..... | 37 | +| 1 General provisions..... | 37 | +| 2 Answer-back codes..... | 37 | +| 3 Responsibility of transmitting or receiving stations..... | 37 | +| 4 Procedures before transmission of a telegram..... | 37 | +| 5 Transmission of telegrams..... | 38 | +| 6 Reception of telegrams..... | 39 | +| 7 Abnormal conditions before transmission..... | 39 | +| 8 Abnormal conditions during transmission ..... | 39 | +| 9 Traffic between gentex offices equipped with page-printing teleprinters..... | 40 | +| 10 Interworking between tape-printing and page-printing teleprinters..... | 41 | +| 11 Special transmission procedures for use with format converters and/or automatic error correction devices ..... | 41 | +| 12 Service advices (A) and use of codes ..... | 41 | +| VI. Interworking between the telegram retransmission system and the gentex network . | 44 | + +| | Page | +|-------------------------------------------------------------------------------------------------------------|-------------| +| DIVISION D – TELEGRAPH SERVICE CORRESPONDENCE..... | 47 | +| I.    Telegraph service correspondence..... | 47 | +| 1    Definitions..... | 47 | +| II.   Service telegrams and service advices ..... | 47 | +| 1    General provisions..... | 47 | +| 2    Service telegrams ..... | 48 | +| 3    Service advices..... | 48 | +| 3.1    General provisions..... | 48 | +| 3.2    Procedure..... | 48 | +| 3.2.1    End-to-end servicing ..... | 48 | +| 3.2.2    Follow-on service advices..... | 48 | +| 3.2.3    Return service advices..... | 49 | +| 3.3    Wording..... | 49 | +| 3.4    Repetition of a telegram ..... | 49 | +| III.  Examples of format and wording of service correspondence..... | 50 | +| DIVISION E – OPERATIONAL PROVISIONS APPLYING TO INTERNATIONAL
FACSIMILE TRANSMISSIONS OF TELEGRAMS ..... | 52 | +| 1    General provisions..... | 52 | +| 2    Preparation of telegrams for transmission..... | 52 | +| 3    Routing and retransmission of telegrams ..... | 53 | +| 4    Delivery at destination..... | 53 | +| 5    Service correspondence..... | 53 | +| 6    Archives..... | 53 | + + + +## Recommendation F.1 + +## OPERATIONAL PROVISIONS FOR THE INTERNATIONAL PUBLIC TELEGRAM SERVICE + +*(Geneva, 1992; revised in 1998)* + +### Introductory notes + +1 Telegram examples given in this Recommendation are only intended to illustrate the correct formatting of telegrams. Groups such as gentex answer-back codes, channel indicators, telegram identification groups, destination indicators, origin indicators and postal codes do not necessarily reflect current usage or routing arrangements in the telegraph offices concerned. + +2 Letters, figures and signs that are transmitted electrically are shown in bold font: +**TLX420216.** + +3 The telegram service is part of bureau services as described in Recommendation F.18. + +4 The term Recognized Operating Agency (ROA) is defined in the International Telecommunication Constitution (Geneva, 1992). For the purpose of this Recommendation, an ROA is, in effect, any individual, company, corporation or governmental agency that operates an international telecommunication service that carry public correspondence (as defined in the Constitution). Each ROA is authorized by an ITU Member, which imposes certain obligations on the ROA. (For further details, see the Constitution.) + +### **DIVISION A** + +### **GENERAL PROVISIONS APPLYING TO ALL METHODS OF WORKING** + +#### **I. Hours of service of offices** + +##### **1 Duration and closing of service – Legal time** + +- A1 1.1 Each Administration shall fix the hours during which its offices shall be open for international service. +- A2 1.2 International communications established between important offices shall, so far as practicable, work without interruption. +- A3 1.3 In relations between offices that are permanently open, the closing of daily sessions shall take place at a time agreed upon between the offices concerned. +- A4 1.4 In relations between offices that are not permanently open, a terminal office may not close before having exchanged all outstanding international telegrams with an office that is open later and before having obtained confirmation that all telegrams have been received. +- A5 1.5 Between two directly communicating offices in different countries, close of work may take place only by agreement between these offices. If these offices have different hours of closing, the office that closes earlier shall request the close of work. If they have the same closing time, the close of work shall be requested by the office of the country, the capital of which has a longitude to the east of the other capital. +- A6 1.6 Offices shall use the legal time of their country or of their zone. + +#### **II. Classification of correspondence in the international public telegram service** + +##### **1 Telegrams and special services** + +###### **1.1 Obligatory telegrams** + +- A7 1.1.1 The following classes of telegrams shall be accepted in the international public telegram service (for the application of service indications, see A39 to A45): + +| | SERVICE INDICATION | +|---------------------------------------------------------------------------------------------------|------------------------------------| +| Telegrams relating to the safety of life | SVH | +| Telegrams relative to the application of the United Nations Charter | ETATPRIORITE | +| Government telegrams | ETAT or ETATPRIORITE | +| Meteorological telegrams | OBS | +| Telegrams concerning persons protected in time of war by the Geneva Conventions of 12 August 1949 | RCT | +| Ordinary private telegrams | | +| Service telegrams or advices | A | + +###### 1.2 Optional telegrams and special services + +A8 1.2.1 Administrations have the option of admitting the telegrams listed in A10 and telegrams with the special services listed in A11. + +A9 1.2.2 However, Administrations that do not admit the telegrams listed in A10 and/or telegrams with the special services listed in A11 in their own services, must let them pass in transit except in case of suspension of service provided for in Article 20 of the Convention (Nairobi, 1982 [1]). + +A10 1.2.3 *Optional telegrams* + +| | SERVICE INDICATION | +|-------------------------------------|--------------------| +| Postal financial services telegrams | POSTFIN | +| Letter telegrams | LT | +| Government letter telegrams | LTF | +| Privilege telegrams | CONFERENCE | + +A11 1.2.4 *Special services* + +| | | +|--------------------------------------------------------|---------------------------------------| +| Urgent transmission and delivery | URGENT | +| De luxe form | LX | +| De luxe form of condolence | LXDEUIL | +| Period of retention of radiotelegrams at land stations | Jx
(x = number of days) | +| Telephone delivery | TFx
(x = telephone number) | +| Telex delivery | TLXx
(x = telex number) | +| Facsimile delivery | FAXx
(x = facsimile number) | + +#### III. Preparation and handing in of telegrams + +##### 1 General + +- A12 1.1 In principle, the text and the signature of a telegram may be written in any language (see A14 and A101). +- A13 1.2 They may equally be expressed in some other form based on the use of those characters mentioned in A15 to A19, A101 to A103. +- A14 1.3 Exceptionally, where Members of the ITU find it necessary not to admit private telegrams in secret language, the provisions of Recommendation F.4 shall apply. Government and service telegrams may be expressed in secret language in all relations. The French, English and Spanish languages at least shall also be admitted in all relations as plain language. + +##### 2 Characters that may be used for the preparation of telegrams + +- A15 2.1 The original telegram must be written in characters that are used in the country of origin and that have an equivalent in the table of telegraph signals given below: +- A16 2.1.1 Letters: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z +- A17 2.1.2 Figures: 1 2 3 4 5 6 7 8 9 0 +- A18 2.1.3 Punctuation marks and miscellaneous signs: +- | | | +|------------------------------------|---| +| Full stop | . | +| Comma | , | +| Colon or division sign | : | +| Question mark | ? | +| Apostrophe | , | +| Cross or addition sign | + | +| Hyphen or dash or subtraction sign | – | +| Fraction bar or division sign | / | +| Double hyphen | = | +| Left-hand bracket (parenthesis) | ( | +| Right-hand bracket (parenthesis) | ) | +- A19 2.2 The cross sign (+) used as a sign of addition may be utilized in a group but not as an isolated sign. +- A20 2.3 Every footnote, insertion, erasure, elimination or correction must be approved by the sender or his representative. +- A21 2.4 As some expressions such as $30^a$ , $30^{me}$ , $1^\circ$ , $2^\circ$ , $\diamond B$ , cannot be reproduced by all instruments, senders must substitute an equivalent that can be telegraphed; thus, for example, for the expressions quoted above: **30 POWER A** (or **30 A**), **TRENTIEME**, **PRIMO**, **SECUNDO**, **B IN DIAMOND**, etc. +- A22 2.5 However, if the expressions $30^a$ , $30^b$ , etc., 30 *bis*, 30 *ter*, etc., 30 I, 30 II, etc., 30A, 30B, etc., $30^1$ , $30^2$ , etc., indicating a house number, appear in the address, the accepting officer shall separate the main number from the number qualifying it, or from the accompanying letters or digits, by a fraction bar. These expressions shall consequently be + +transmitted in the following form in the address of a telegram: **30/A, 30/B, etc., 30/BIS, 30/TER, etc., 30/1, 30/2, etc., 30/A, 30/B, etc., 30/1, 30/2, etc.** + +##### **3 Order of arrangement of the various parts of a telegram** + +- A23 3.1 Every telegram must have a heading, which shall include the information needed for identification and, if necessary, for the routing of the telegram. +- A24 3.2 The other parts of which a telegram may consist must be arranged as follows: +- A25 3.2.1 the address (including the service indications, if any); +- A26 3.2.2 the text (including the signature, if any). + +##### **4 Heading** + +- A27 4.1 The heading of a telegram consists of the lines listed in A28 to A30: +- A28 4.2 the *numbering line* containing the information to identify the telegram (for example the originating office number) or telegram identification group and the serial and/or reference numbers used in transmitting the telegram. The numbering of telegrams to be transmitted over international circuits depends on the particular mode of operation employed. See B55 to B66, C21 to C25 and Recommendation F.31 (see 2.1/F.31 to 2.3/F.31 and 5.4/F.31). +- A29 4.3 the *pilot line* (where this is required) prepared in accordance with Recommendation F.31 (see 2.1/F.31 to 2.3/F.31 and 5.4/F.31). +- A30 4.4 the *preamble line* which consists of: +- A31 4.4.1 the official name of the office of origin which shall not be abbreviated. If necessary, the name of the office of origin may be suffixed by particulars intended to distinguish it from other offices of the locality. Such a suffix should be joined to the name of office of origin by a fraction bar; + +Examples: **VISEU/VIRIATO +BERLIN/19** + +- A32 4.4.1.1 when a telegram is: + - a) telephoned; + - b) sent in by telex; + - c) deleted; + - d) sent in by facsimile. + +to a telegraph office (ROSTOCK, for example) by a customer located somewhere (WISMAR, for example), the office of origin may be transmitted as follows: + +- a) **ROSTOCK/TF** + - b) **ROSTOCK/TLX** + - c) **deleted** + - d) **ROSTOCK/FAX** +- A33 4.4.2 The number of chargeable and actual words (see A115 to A117). +- A34 4.4.3 The date and time of handing in of the telegram. The date and time shall be shown by two groups of figures, the first indicating the day of the month and the second consisting of a group of four figures (**0001 to 2400**) indicating the hours and minutes (see A6). + +- A35 4.4.4 Service instructions, if any. +- A36 4.4.4.1 A service instruction is an instruction added to a telegram by the office of origin or by another office to give additional information about the telegram. +- A37 4.4.4.2 Examples of service instructions and the abbreviated form in which they may be indicated are shown in the following list: +- | | | +|----------------------------------------|----------------------------------| +| Correction follows (see A166, A167) | CTF | +| Telegram sent a second time (see A169) | AMPLIATION | +| Division of a telegram (see A111) | PART/1 x, PART/2 x, . . . | +- A38 4.4.4.3 These instructions are placed at the end of the preamble line. + +##### 5 The address part + +###### 5.1 The service indications + +- A39 5.1.1 Service indications, if any, shall be shown separately in the first line of the address part. The service indications on a telegram: +- A40 a) identify it as within a particular class of telegram; +- A41 b) denote a special service requested by the sender. +- A42 5.1.2 Service indications may be written by the sender in full or abbreviated form. If necessary, the accepting officer shall substitute the appropriate service indications shown in A7, A10 and A11. +- A43 5.1.3 The service indications identifying the class of telegram are shown in A7 and A10. +- A44 5.1.4 If there are several service indications in a telegram, the service indication identifying class shall come first, for example **LT LX**. +- A45 5.1.5 Exceptionally, the service indication **URGENT**, if present, shall precede the indication of class, for example **URGENT RCT**. + +###### 5.2 General provisions for the address + +- A46 5.2.1 The address must contain all the particulars necessary to ensure delivery of the telegram to the addressee without inquiries or requests for information. In all cases of insufficient address the telegram shall be accepted only at the risk of the sender, if he insists on sending it, and he has also to bear the consequences. +- A47 5.2.2 With three exceptions, every address, to be admissible, must contain at least two words, the first designating the addressee and the second the name of the telegraph office of destination. The exceptions are: +- A48 a) **SVH** telegrams (see A203); +- A49 b) **POSTFIN** telegrams (see A236 to A240); +- A50 c) Service advices (see D35). +- A51 5.2.3 The following categories of address are permitted: +- A52 a) full postal address; +- A53 b) registered address; +- A54 c) telephonic address; +- A55 d) telex address; + +- A56 e) deleted; +- A57 f) facsimile address; +- A58 g) *poste restante* or *télégraphe restant* address; +- A59 h) post office box address. +- A60 5.2.4 When a telegram is addressed to a person at the address of another, the address must contain, immediately after the name of the actual addressee, the expression *chez*, *care of* or other equivalent expression. +- A61 5.2.5 When the destination is not served by international communication circuits, A182 shall be observed. +- A62 5.2.6 The name of the telegraph office of destination should be placed after the words in the address that designate the addressee and where given, his residence. It should be written as the last address line. The List of Telegraph Offices can be used to support the spelling of the name of offices. +- A63 5.2.7 If necessary, this name may be suffixed by particulars intended to distinguish it from other offices of the locality. Such a suffix should be joined to the name of the office of destination by a fraction bar: +- Example: **BORDEAUX/SAINTPROJET** +- A64 5.2.8 The name of the place given as the destination, or land station chosen for the transmission of a radiotelegram must be followed either by the name of the state, province or country or by other particulars that are considered adequate for the forwarding of the telegram. The same course shall be followed when there are several offices of the same name and the sender is not in a position to furnish definite information from which the official designation of the locality can be identified. In either case, the telegram shall be accepted only at the risk of the sender. +- A65 5.2.9 In radiotelegrams the name of the destination mobile station should be written as it appears in the appropriate ITU List [2], [3], or, if not so listed, the call sign or other particulars should also be given, if necessary. +- A66 5.2.10 If the address does not conform with A47 to A50, A64 and A65, the telegram shall be refused. + +###### 5.3 Full postal address + +- A67 5.3.1 The full postal address must, as a general rule, include: +- A68 a) the designation of the addressee; +- A69 b) the name of the street, boulevard, avenue, etc. of his abode together, if available, with the number; +- A70 c) the name of the office of destination, followed by a fraction bar and the name of country. +- A71 5.3.2 The name of the telegraph office of destination should be supplemented by the postal code whenever possible placed according to the requirements of the country of destination. The postal code should be enclosed in brackets by the accepting office. +- A72 5.3.3 In the absence of the particulars mentioned in A69, the address must state, so far as possible, the occupation of the addressee or give any other useful information. +- A73 5.3.4 Even for small localities, the designation of the addressee must be supplemented, so far as possible, by further particulars for the guidance of the delivery office. + +A74 5.3.5 Surnames, given (christian) names, names of firms and particulars of abode shall be accepted as the sender writes them. Any other particulars in the address should be written in the language or languages of the destination country. + +The official name of the office of destination shall not be abbreviated. + +A75 5.3.6 The address may thus appear as follows: + +**URGENT** + +**MRS MARIA JACINTA** + +**C/O VITOR E COMPANHIA LIMITADA** + +**RUA VASCO DA GAMA 232** + +**PORTO COVO** + +**(7520) SINES** + +A76 5.3.7 In telegrams for China, the Chinese phonetic alphabet, groups of four figures or groups of three roman characters may be used to designate the name and abode of the addressee. + +###### **5.4 Registered address** + +A77 5.4.1 A registered address is one in which the full address (excluding the office of destination) is replaced by a single simplified indication. + +A78 5.4.2 The address may thus appear as follows: + +**INOCRAM** + +**LISBOA** + +A79 5.4.3 Such an address is registered in the destination country and represents the full address of the addressee and, if necessary, instructions for the delivery of his telegrams. + +A80 5.4.4 The right to delivery of telegrams so addressed shall be subject to arrangements between the addressee and the telegraph office of destination. + +A81 5.4.5 When, exceptionally, the registered address is followed by an additional indication **ATTENTION** or any other equivalent and/or the name of a third person, it should normally only be used to reconstitute the full address of the addressee. + +###### **5.5 Telephonic address** + +A82 5.5.1 If the sender desires his telegram to be delivered by telephone, the service indication **TFx** (x being the telephone number of the addressee with, if necessary, the name or access number of the network), shall be indicated before the address (the name of the addressee and the office of destination may be sufficient). + +A83 5.5.2 The address may thus appear as follows: + +**TF873455** + +or + +**TFDEWILGEN234** + +**WILLI SCHUTZ** + +**DE VRIES** + +**HAMBURG** + +**HEERENVEEN** + +###### 5.6 Telex and facsimile addresses + +###### 5.6.1 Telex address + +A84 5.6.1.1 If the sender desires his telegram to be delivered by telex, the service indication **TLXx** (x being the number of the addressee's telex station), shall be indicated before the address (name of the addressee and the office of destination may be sufficient). + +A85 5.6.1.2 The address may thus appear as follows: + +**TLX200745 +MARIE DUBOIS +PARIS** + +A86-A87 Deleted + +###### 5.6.2 Facsimile address + +A88 5.6.2.1 If the sender desires his telegram to be delivered by facsimile, the service indication **FAXx** (x being the facsimile number of the addressee), shall be indicated before the address (the name of the addressee and the office of destination may be sufficient). + +A89 5.6.2.2 The address may thus appear as follows: + +| | | | +|----------------------|----|--------------------------| +| FAX622266 | or | FAXCAVERNAES92143 | +| PIERRE WENGER | | CARLA SOFIA | +| BERNE | | VISEU | + +###### 5.7 Poste restante or télégraphe restant address + +A90 5.7.1 The address of telegrams intended to be delivered to a *poste restante* or *télégraphe restant* must be composed of: + +A91 a) the name of the addressee including, where possible, his given (christian) name or initials; + +A92 b) the words *poste restante*, *télégraphe restant* (or the equivalent in a language of the destination country); and + +A93 c) the name of the telegraph office of destination. + +A94 5.7.2 Administrations who do not admit telegrams with *poste restante* or *télégraphe restant* as part of the address shall inform other Administrations through the medium of the General Secretariat. + +A95 5.7.3 Initials alone, figures, given (christian) name only, fictitious names or arbitrary signs of any kind shall not be allowed in the address. + +###### 5.8 Post office box address + +A96 5.8.1 A post office box address must be composed of: + +A97 a) the name of the addressee; + +A98 b) the designation *boîte postale* (or its equivalent in a language of the destination country) followed by the box number; and + +A99 c) the name of the telegraph office of destination. + +A100 5.8.2 The name of the office to which the addressee's post office box belongs should, if necessary, be supplemented by particulars to distinguish it from other local offices. + +For example: **DUPONT** + +**BOITE POSTALE 275** + +**PARIS/24** + +##### **6 The text part** + +###### **6.1 The text** + +A101 6.1.1 Each telegram must contain a text that contains at least one character. + +A102 6.1.2 The text of a telegram must be continuous (no blank lines, etc.), using only the characters specified in A15 to A22. + +A103 6.1.3 When important figures or words appear in the text, it is desirable for the sender to repeat them (or the critical parts of them) in order to allow the addressee to detect possible errors in transmission. The sender may give the repetition immediately after the relevant group (followed by a space) either in brackets or preceded by the word **REPEAT**. Alternatively, figures may be spelt. + +For example: **1500 (1500)** + +**1500 REPEAT 1500** + +**FIFTEEN HUNDRED (1500)** + +**PAY MR. M. KAUFNER (M. KAUFNER)** + +**NOT REPEAT NOT** + +###### **6.2 The signature** + +A104 6.2.1 A signature shall not be compulsory. It may be written by the sender in any form. + +###### **6.3 Long telegrams** + +A105 6.3.1 For transmission purposes a telegram is normally limited to 400 actual words. + +A106 6.3.2 Except in relations where a bilateral agreement to the contrary exists, telegrams handed in with more than 400 actual words shall be divided prior to transmission into separate telegrams each of 400 actual words, plus one telegram for the remainder, unless this remainder is less than 50 words. + +A107 6.3.3 This division shall be made by the Administration; it shall not be the sender's responsibility. + +A108 6.3.4 When the original telegram has been divided, the resulting telegrams shall: + +A109 6.3.4.1 be transmitted in accordance with the relevant procedure outlined in Recommendations F.1 and F.31; + +A110 6.3.4.2 bear the same telegram identification group; + +A111 6.3.4.3 contain identical preamble lines (i.e. showing the same office of origin, the chargeable/actual words for the complete original telegram, date and time), but with the addition of the service instruction **PART** followed by a fraction bar, the number of the part of the original telegram, a space and the number of actual words in that part (e.g. **PART/1 400, PART/2 400 and PART/3 79**); + +example: **ZCZC AZA123 ESI4567** + +**NZXX CV AASV 402** + +**SYDNEY/TF 489/486 3 1530 PART/1 400** + +**ZCZC AZA125 ESI4567** + +**NZXX CV AASV 087** + +**SYDNEY/TF 489/486 3 1530 PART/2 86** + +A112 6.3.4.4 include in the pilot line (where applicable) a special tariff indicator **V** and the number of chargeable words for that part only. + +A113 6.3.4.5 All parts of a divided telegram shall be transmitted to the country of destination using the same routing and in sequential order. + +##### **7 Cancellation of telegrams at the request of the sender** + +A114 7.1 The sender of a telegram or his authorized representative may, on establishing his status and identity, cancel his telegram only if it has not been transmitted by the office of origin. After transmission has taken place, the addressee can only be notified of the cancellation of the telegram by means of another telegram from the sender. + +#### **IV. Counting of words** + +##### **1 General provisions** + +A115 1.1 In the counting words, a distinction shall be made between: + +A116 1.1.1 the number of actual words – each separate word, group of characters or single character that is preceded and followed by a space (or by either the start or the end of a line) shall be counted as one actual word; + +A117 1.1.2 the number of chargeable words – the provisions for counting the number of chargeable words are shown in A124 to A126. + +A118 1.2 Everything that the sender asks to have transmitted shall be chargeable, with the exception of the name of the code used for the wording of a secret language telegram, when this information is required by the origin or the destination country. + +A119 1.3 The following, however, shall not be included in the number of actual and chargeable words nor shall they be transmitted: + +A120 1.3.1 dashes used only to separate on the sender's copy the different words or groups; + +A121 1.3.2 other isolated signs, unless the sender has specifically requested their transmission. + +A122 1.4 The heading (see A30 to A44) shall not be included in the number of actual and chargeable words. + +A123 1.5 Service indications (if any) shall be included in the number of chargeable words in all chargeable telegrams and in the number of actual words in all telegrams. + +##### **2 Counting the number of chargeable words** + +A124 2.1 Words, groups of characters or single characters; + +A125 2.1.1 not exceeding ten characters shall be counted as one chargeable word each; + +A126 2.1.2 exceeding ten characters shall be counted at the rate of one chargeable word for each ten characters or part thereof. + +##### **3 Indication of the number of words in the preamble line** + +A127 3.1 When the number of chargeable words is the same as the number of actual words it shall be shown as a single number. + +A128 3.2 When the number of chargeable words is different from the number of actual words, both shall be shown, separated by a fraction bar. The number of chargeable words shall be shown first. + +##### **4 Irregularities in the counting of words** + +A129 4.1 Except for the case of telegrams originated by a mobile station, the counting of words by the office of origin shall be decisive both for transmission and for the international accounts. + +A130 4.2 In the case of a telegram originated by a mobile station, the counting of words by the land station is decisive. + +A131 4.3 Nevertheless, a transit office or the office of destination shall be entitled to call the attention of the office of origin (or, in the case of a telegram originated by a mobile station, the land station) to counting irregularities. + +A132 4.4 A transit office may not suspend transmission of a telegram because of irregularities in the counting of words. + +#### **V. Routing and retransmission of telegrams** + +A133 1.1 The routing of telegrams shall be in accordance with the routing list for the relevant network and mode of operation. + +A133A The transmission can be character-coded or image-coded. + +The following networks can be used: + +- a) the gentex network; +- b) dedicated circuits; +- c) the telex network; +- d) the Public Switched Telephone Network (PSTN); +- e) the Integrated Services Digital Network (ISDN); +- f) the Circuit Switched Public Data Network (CSPDN); +- g) the Packed Switched Public Data Network (PSPDN). + +- A134 1.2 In interworking between telegraph offices and between telegraph offices and bureau offices, the transmission and the routing of telegrams shall be in accordance with the mode of operation as agreed by the ROAs. +- A135 1.3 Each ROA decides by which network and route the telegram shall be transmitted or retransmitted. + +#### VI. Transmission of telegrams + +##### 1 Order of transmission of telegrams + +- A136 1.1 The transmission of telegrams shall take place in the following order except where technically impracticable: +- A137 1.1.1 telegrams relating to the safety of life; +- A138 1.1.2 telegrams relative to the application of the United Nations Charter; +- A139 1.1.3 government telegrams with priority; +- A140 1.1.4 meteorological telegrams; +- A141 1.1.5 ordinary private telegrams and **RCT** telegrams when urgent transmission and delivery have been requested; +- A142 1.1.6 service telegrams and service advices; +- A143 1.1.7 government telegrams, ordinary private telegrams, and **RCT** telegrams; +- A144 1.1.8 letter telegrams (including government letter telegrams). +- A145 1.2 Every office that receives, on an international circuit, a telegram presented as an **SVH** telegram, a government telegram (see also A215 and A216), a service telegram or a meteorological telegram shall forward it as such. +- A146 1.3 Except where technically impracticable, telegrams having the same priority shall be transmitted by the sending office in the order of their time of handing in, and by transit offices in the order of their time of receipt. +- A147 1.4 At transit offices, originating telegrams and transit telegrams to be transmitted over the same routes shall, except where technically impracticable, be placed together and transmitted according to the time of handing in or receipt, subject to the order laid down in A136 to A146. + +##### 2 Order of transmission of the various parts of a telegram + +- A148 2.1 The various parts of a telegram shall be transmitted as follows: +- A149 2.1.1 the heading; +- A150 2.1.2 the address part (including the service indications if any); +- A151 2.1.3 the text part (including the signature, if any). + +##### 3 Transmission of the heading + +- A152 3.1 The provisions regarding the formation of the heading of a telegram are given in A27 to A38. Following the transmission of the numbering line and the pilot line (if required), the various parts of the preamble line shall be transmitted in the following order: + +- A153 3.1.1 the name of the office of origin; +- A154 3.1.2 the number of words; +- A155 3.1.3 the date and time of handing in of the telegram; +- A156 3.1.4 any service instructions. + +##### **4 Transmission of the other parts of a telegram** + +- A157 4.1 Every telegram must be transmitted as received from the sender and/or accepted by the office of origin, subject to the conditions mentioned in A101 and A102. +- A158 4.2 With the exception of service indications, which must always be transmitted in the form shown in A7, A10 or A11, and in cases settled by agreement between the various Administrations, the use of any abbreviations whatsoever and alterations of any kind shall be prohibited. + +##### **5 Reception** + +- A159 5.1 With the exception of mobile radio stations, no office may refuse to receive telegrams offered by a sending office, whatever their destination. However, in the case of a manifest irregularity, the operator shall point it out to the sending office by service advice. The responsibility for the telegram then reverts to the telegraph office of origin. +- A160 5.2 Each received telegram should be considered by the receiving office to be a telegram sent by the sending office on purpose. When the receiving office is not the office of destination, the telegram shall be retransmitted to: + - the destination office, when it is located in the same country as the office receiving it; + - the destination office, when the office of destination is not in the same country as the receiving office but it can be retransmitted unambiguously. +- A161 5.3 When the telegram cannot be transmitted unambiguously, the telegraph office of origin must be informed by a service advice, indicating the reason. The responsibility for the telegram then reverts to the telegraph office of origin. +- A162 5.4 A telegram must not be refused or delayed because of irregularities. The telegram must be accepted and then, if necessary, a service advice sent to the office of origin requesting rectification. +- A163 5.5 As soon as possible after reception, in each telegram the number of words received shall be compared with the number of actual words shown in the preamble line. +- A164 5.6 Where, in accordance with A103, the sender has included repeated groups in the text part, the receiving office is not required to check such groups. + +##### **6 Errors and interruptions** + +- A165 6.1 When operators are in doubt as to the accuracy of the transmission or reception, they shall give or request the partial or complete repetition of telegrams that they have either sent or received by a service advice. +- A166 6.2 Telegrams containing obvious errors can be retained only in cases where the rectifications can be obtained quickly. They must be retransmitted without delay with the + +service instruction **CTF** at the end of the preamble line. This instruction is supplemented by information about the nature of the rectification; for example, **CTF FOURTH**, meaning that the fourth word of the text will be corrected. Immediately after the retransmission of the telegram, the rectification shall be requested by service advice. + +- A167 6.3 If, through interruption or any other cause, it is not practicable to give or receive the repetition [or acknowledgement of receipt (see B48)], this circumstance shall not prevent the office that has received the telegrams from sending them on, the service instruction **CTF** being inserted at the end of the preamble line, any necessary correction following later. +- A168 6.4 In cases of interruption, the receiving office shall immediately request the completion of an unfinished telegram and, when necessary, give an acknowledgement of receipt (see B48), either by another direct circuit if there is one in service or, if not, by a service advice, forwarded by whatever means is available. +- A169 6.5 When the transmission of a telegram has not been completed or the acknowledgement of receipt is not received within a reasonable time, the telegram shall be transmitted afresh with the service instruction **AMPLIATION** (see A38). The meaning of this service instruction, **AMPLIATION**, may be indicated on the addressee's copy by the destination office. +- A170 6.6 Where this second transmission is made by a route other than that used originally for forwarding the telegram, only the second transmission must be included in the international accounts. The sending office shall then make the necessary arrangements with the offices concerned, by service advice, with the object of excluding the original transmission of the telegram from the international accounts. + +#### VII. Interruption of telegram communications + +##### 1 Diversion of telegrams + +- A171 1.1 When the ordinary telegram communications are found to be interrupted, the office beyond which the interruption occurs or an office situated further back having at its disposal alternative routes shall forward the telegrams immediately by one of these routes or, failing that, by post (whenever practicable by registered letter) or by special messenger. + +#### VIII. Delivery at destination + +##### 1 General provisions + +- A172 1.1 The addressee of a telegram must prove his identity when requested to do so by the office of destination. +- A173 1.2 On the telegram delivered to the addressee the following information from the preamble line of the telegram handed in at the office of origin shall always be given: +- A174 1.2.1 the name of the office of origin; +- A175 1.2.2 the number of words; +- A176 1.2.3 the date and the time of handing in; +- A177 1.2.4 those service instructions that reach the office of destination. + +##### 2 Methods of delivery + +- A178 2.1 Administrations shall notify the General Secretariat of the methods they normally use for delivery and quality of service (maximum delay for 95% of telegrams) for publication in the *Information for the Operation of the International Telegraph, Data Transmission and Telematic Services* [4]. +- A179 2.2 Telegrams shall be delivered by any means available according to their addresses, either to a private house, office, business house, etc., of the addressee, or to a place where he is living or staying temporarily (hotel, etc.) or to a *télégraphe restant*, a *poste restante* or to a post office box. +- A180 2.3 Telegrams shall be delivered to the addressee by telephone, telex, teletex or facsimile as far as practicable where this method of delivery has been requested, unless the regulations of the destination Administration are contrary to such a procedure or unless the addressee has specifically requested that his telegrams should not be delivered by telephone, telex or facsimile. +- A181 2.4 Telegrams may also be delivered by telephone, telex or facsimile in accordance with conditions laid down by the Administrations. +- A182 2.5 Telegrams addressed to localities not served by international telecommunication circuits may be delivered to their address from a telegraph office of the country in which the place of destination is situated, either by post or, if these services exist, by express or by airmail. Nevertheless, delivery may be effected by such means from a telegraph office of another country when the destination country is not connected to the international telecommunication system. +- A183 2.6 Telegrams shall be delivered or forwarded to their destination in the order of their receipt and priority, except in the cases specified for the delivery of letter telegrams. **SVH** telegrams as well as government telegrams with priority or telegrams relative to the application of the United Nations Charter shall be delivered without delay. +- A184 2.7 Telegrams addressed to places in the locality served by the telegraph office shall be delivered without delay to their addresses subject to the limitation imposed by the working hours of delivery offices. Telegrams received during the night may be delivered immediately if they bear the service indication **URGENT**. +- A185 2.8 Telegrams may be delivered either to the addressee, to an adult member of his family, to any person in his service, to his lodgers or guests, or to the receptionist at the hotel or the house, unless the addressee has designated in writing a special representative. +- A186 2.9 If at the address indicated the messenger finds no one willing to accept the telegram on behalf of the addressee, a notice shall be left at the address, and the telegram shall be taken back to the office, to be delivered to the addressee or his representative upon application. However when there is no doubt regarding the address of the addressee, telegrams may be placed in his letter box if there is also no doubt that the addressee will empty his box within a reasonable period. When the addressee, after being notified of the arrival of a telegram, does not take delivery within a period not exceeding 48 hours (excluding weekends and official holidays), action shall be taken to notify the office of origin of the delay in delivery in accordance with A191 to A193. +- A187 2.10 Telegrams that have to be placed as *poste restante*, in a post office box or forwarded by post shall be handed without delay to the postal service by the telegraph office of destination. + +- A188 2.11 Telegrams addressed *poste restante*, post office box or delivered by post shall, with respect to delivery and period of retention, be subject to the same rules as postal correspondence. As regards non-delivery they shall be subject to the provisions relative to the non-delivery of telegrams. +- A189 2.12 When a telegram is addressed *télégraphe restant* it shall be claimed at the telegraph counter by the addressee or his duly authorized representative who shall, if so requested, prove his identity. +- A190 2.13 Telegrams to be delivered to passengers in a ship may be delivered to the representatives of the ship. If the ship is entering port, the telegram shall be delivered preferably to the addressee himself, before disembarkation where practicable, and where it does not entail additional expense (for boat hire, for example). + +##### 3 Non-delivery and delayed delivery + +- A191 3.1 When a telegram cannot be delivered, the office of destination shall send, with the minimum delay, a service advice to the office of origin stating the cause of the non-delivery. (For a layout of this telegram, see D43.) +- A192 3.2 The address repeated in the service advice shall also include the name of the office of destination if this information is considered necessary. According to the circumstances, this advice shall be completed with the reason for non-delivery. +- A193 3.3 When a telegram with *télégraphe restant*, *poste restante* or post office box delivery, or a telegram to be delivered to an hotel, club, shipping or tourist agency, etc. has not been claimed by the addressee and is returned to the telegraph service, the office of destination shall without delay notify non-delivery to the office of origin. +- A194 3.4 The office of origin shall check the address and, if it has been altered, rectify it at once by a reply advice. The service advice shall contain any instructions necessary to correct any errors (for layout of this telegram, see D44). +- A195 3.5 If practicable, when a transit office receives a service advice of non-delivery, it shall check the address from the transit form of the original telegram and, if it observes an error, shall itself transmit to the office of destination the correction. If it does not observe an error, it shall transmit the service advice to the office of origin (see D32). +- A196 3.6 If the address has not been altered, the office of origin, whenever practicable, shall communicate the service advice of non-delivery to the sender. Failure to communicate this advice or delay in doing so shall not give a right to the refund of the charge paid for the telegram. +- A197 3.7 The addressee of a service advice of non-delivery may complete, rectify or confirm the address of the original telegram only by means of a service advice. +- A198 3.8 If, after the service advice of non-delivery has been sent, the telegram is claimed by the addressee, or if the office of destination is able to deliver the telegram without having received a correcting advice, it shall transmit to the office of origin a second service advice advising details of the delivery (for layout of this telegram, see D45). +- A199 3.9 The service advice of delivery shall be communicated to the sender, if he was notified of the non-delivery. +- A200 3.10 When it has not been possible to deliver a telegram to the addressee within a minimum period of 14 days from the date of its receipt at the office of destination, such a telegram may be disposed of, subject to the national regulations of the destination country. + +#### IX. Obligatory telegrams + +##### 1 Telegrams relating to the safety of life (SVH) + +- A201 1.1 In accordance with Article 25 of the Convention [1], telegrams relating to the safety of life on land, at sea, in the air or in outer space, and exceptionally urgent epidemiological telegrams of the World Health Organization shall have absolute priority over all other telegrams. +- A202 1.2 **SVH** telegrams, whether sent by an authority or private person, must refer to the safety of life in cases of exceptional urgency which are obviously of general interest. +- A203 1.3 Exceptionally, an **SVH** telegram may be accepted without the name of an addressee. +- A204 1.4 **SVH** telegrams sent by the Headquarters of the World Health Organization or by the regional epidemiological centres of that Organization shall be certified as really being telegrams of exceptional urgency relating to the safety of life. +- A205 1.5 The service indication **SVH** shall be shown before the address. No service indications other than **SVH** shall be admitted in safety of life telegrams. This service indication shall be included in the telegram: +- A206 1.5.1 by the office of origin in the case of an **SVH** telegram handed in at a telegraph office; +- A207 1.5.2 by the receiving land station in the case of an **SVH** telegram following a distress signal from a ship or an aircraft. + +##### 2 Government telegrams and telegrams relative to the application of the United Nations Charter + +- A208 2.1 Government telegrams are, according to the definition of the Convention [1], telegrams originating with any of the authorities specified below: +- the Head of a State; + - the Head of a government and members of a government; + - Commanders-in-Chief of military forces, land, sea or air; + - diplomatic or consular agents; + - the Secretary-General of the United Nations; Heads of the principal organs of the United Nations1; + - the International Court of Justice. +- A209 2.1.1 Replies to government telegrams shall also be regarded as government telegrams. +- A210 2.2 Government telegrams must bear the seal or stamp of the authority that sends them. This shall not be required when the authenticity of the telegram is not in doubt. +- A211 2.3 The right to send a reply as a government telegram shall be established by the production of the original government telegram. + +--- + +1 However, the Heads of the specialized agencies of the United Nations are not included among the authorities entitled to send government telegrams (see Resolution No. 40 of the Plenipotentiary Conference of the International Telecommunication Union, Nairobi, 1982 [1]). + +- A212 2.4 The telegrams of consular agents carrying on private business shall only be regarded as government telegrams when they are addressed to an official person. Telegrams that do not fulfil this condition shall, however, be accepted by telegraph offices and transmitted as government telegrams, but these offices shall at once report the matter to their Administration. +- A213 2.5 In government telegrams for which the sender does not request priority, the service indication **ETAT** shall be shown before the address. +- A214 2.6 In government telegrams for which the sender desires priority, the service indication **ETATPRIORITE** shall be shown before the address. +- A215 2.7 Exceptionally, and subject to the application of the provisions of Articles 25 and 36 of the Convention [1], Administrations shall take the necessary steps to secure a special priority for telegrams relative to the application of the provisions of Chapters VI, VII and VIII of the United Nations Charter, exchanged in an emergency, between the following persons: +- the President of the Security Council; + - the President of the General Assembly; + - the Secretary-General of the United Nations; + - the Chairman of the Military Staff Committee; + - the Chairman of a regional sub-committee of the Military Staff Committee; + - a representative to the Security Council or to the General Assembly; + - a Member of the Military Staff Committee; + - the Chairman or the Principal Secretary of a committee set up by the Security Council or the General Assembly; + - a person performing a mission on behalf of the United Nations; + - a head of State; + - a minister member of a Government; + - the Administrative Head of a trust territory designated as a strategic area. +- A216 2.7.1 Such telegrams, which do not fall under the class of government telegrams, shall be regarded as government telegrams and shall be accepted only if they bear the personal authorization of one of the officials mentioned above. +- A217 2.7.2 The service indication **ETATPRIORITE** shall be shown before the address. +- A218 2.8 Where special arrangements or regional arrangements concluded under Articles 31 and 32 of the Convention [1] exist regarding accounting for **ETATPRIORITE** and **ETAT** telegrams, the identity of the government or of the organization should appear in the preamble line using, wherever possible, the two letters of the destination indicator designating the government of the country concerned (or the two letters identifying the organization) followed by a space and the abbreviation **GOVT**. +- A219 2.9 When a request has been made for the routing of a government telegram by a prescribed route, and such request has been accepted, the telegram may not be transmitted by a route other than the requested route unless the sender, duly consulted, has authorized such procedure. +- A220 2.10 The authorities entitled under the Convention [1] to send government telegrams may send letter telegrams with the service indication **LTF**. + +A221 2.11 If difficulties arise in the routing of an **ETATPRIORITE** telegram which may delay its delivery to the addressee or if delivery is jeopardized because of exceptional circumstances, the sending office if possible or the office of destination shall inform the office of origin without delay. + +##### 3 Telegrams concerning persons protected in time of war by the Geneva Conventions of 12 August 1949 + +A222 3.1 In the following telegrams, the service indication **RCT** shall be shown before the address: + +A223 3.1.1 telegrams addressed to prisoners of war, civilian internees or their representatives (prisoners' representatives, internee committees) by recognized relief societies assisting war victims2; + +A224 3.1.2 telegrams that prisoners of war and civilian internees are permitted to send or those sent by their representatives (prisoners' representatives, internee committees) in the course of their duties under the Convention2; + +A225 3.1.3 telegrams sent in the course of their duties under the Conventions by the national information bureaux or the Central Information Agency for which provision is made in the Geneva Conventions, or by delegations of such bureaux or Agency, concerning prisoners of war, civilians who are interned or whose liberty is restricted, or the death of military personnel or civilians in the course of hostilities3. + +A226 3.2 In telegrams bearing the service indication **RCT**, the only special service that shall be admitted is urgent transmission and delivery (**URGENT**) (if this service is admitted by the origin and destination countries). + +A227 3.3 Telegrams sent by prisoners of war, civilian internees or their representatives shall bear the official stamp of the camp or the signature of the camp commandant or one of his deputies. + +A228 3.4 Telegrams sent by the national information bureaux and the Central Information Agency for which provision is made in the Geneva Conventions, or by delegations thereof, as well as telegrams sent by recognized relief societies assisting war victims, shall bear the official stamp of the bureau, agency, delegation or society that sends them. + +##### 4 Ordinary private telegrams + +A229 4.1 Ordinary private telegrams are obligatory telegrams other than those bearing the service indications **SVH**, **ETAT**, **ETATPRIORITE**, **A**, **OBS** or **RCT**. Ordinary private telegrams may be attributed special services in which case the relevant service indications in A11 should be shown before the address. + +--- + +2 Article 71, paragraph 2; Article 74, paragraph 5 and Article 81, paragraph 4 of the Geneva Convention of 12 August 1949, relative to the Treatment of Prisoners of War; Article 104, paragraph 3; Article 107, paragraph 2 and Article 110, paragraph 5 of the Geneva Convention of 12 August 1949, relative to the Protection of Civilian Persons in Time of War. + +3 Articles 122, 123 and 124 of the Geneva Convention of 12 August 1949, relative to the Treatment of Prisoners of War, Articles 136, 140 and 141 of the Geneva Convention of 12 August 1949, relative to the Protection of Civilian Persons in Time of War. + +##### 5 Telegraph service correspondence + +- A230 5.1 Telegraph service correspondence consists of service telegrams and service advices (see Division D and Recommendation F.17). + +##### 6 Meteorological telegrams + +- A231 6.1 The term *meteorological telegram* denotes a telegram sent by an official meteorological service or by a station in official relation with such a service, and addressed to such a service or to such a station, and which consists solely of meteorological observations or forecasts. A telegram of this kind must always be regarded as drawn up in plain language. +- A232 6.2 The service indication **OBS** shall be shown before the address. No service indication other than **OBS** shall be admitted in meteorological telegrams. +- A233 6.3 On request by the accepting officer, the sender must affirm that the text of his telegram fulfils the conditions prescribed for meteorological telegrams. + +#### X. Optional telegrams + +##### 1 Postal financial telegrams + +- A234 1.1 The issue, wording of the text and payment of money orders and postal cheques are regulated by the Universal Postal Union, even when they are transmitted by telegraph. +- A235 1.2 Money orders and postal cheques transmitted by telegraph are called "**POSTFIN** telegrams". The handling of **POSTFIN** telegrams between Administrations admitting them shall be subject to the same rules as other telegrams. +- A236 1.3 **POSTFIN** telegrams shall bear the service indication **POSTFIN** as the first line of the address part. Only the service indication **URGENT** may precede the service indication **POSTFIN**. +- A237 1.4 Any postal service indications (**AVIS PAIEMENT**, **AVIS INSCRIPTION** and **PAIEMENT MAIN PROPRE**) shall be shown on the second line of the address part. +- A238 1.5 The office of destination shall be shown as the last line of the address part. +- A239 1.6 If the locality in which the post office of payment is situated has no telegraph office, the **POSTFIN** telegram must bear the name of the post office of payment and that of the telegraph office which serves it. +- A240 1.7 Examples of the format of **POSTFIN** telegrams are given in C47 and C48. + +##### 2 Letter telegrams + +- A241 2.1 Letter telegrams are telegrams for which special provisions concerning accounting rates, priority of transmission, and delivery are applied. +- A242 2.2 Administrations that do not accept and deliver letter telegrams must admit them in transit. + +- A243 2.3 Letter telegrams bearing the service indication **LTF** shall be subject, as regards transmission and delivery, to the same conditions as **LT** telegrams. As regards acceptance, they shall be subject to the same conditions as government telegrams. +- A244 2.4 However, the provisions of Article 19 of the Convention [1] (see A259 to A265), relating to stoppage of telegrams, shall not apply to government letter telegrams (**LTF**). +- A245 2.5 As regards acceptance, transmission and delivery, letter telegrams shall be subject to the limitations set out in A246 to A248. +- A246 2.6 Radiotelegrams shall not be admitted as letter telegrams. +- A247 2.7 The only special service admitted in letter telegrams shall be de luxe form (**LX** or **LXDEUIL**). +- A248 2.8 Letter telegrams are as a matter of course delivered by post. + +##### 3 Privilege telegrams + +- A249 3.1 Privilege telegrams (**CONFERENCE**) may be exchanged during the conferences and meetings of the ITU, in accordance with Recommendation D.193, which specifies limits on the number and length of such telegrams in certain cases. +- A250 3.2 Special services apart from **TFx**, **TLXx** and **FAXx** shall not be admitted in privilege telegrams. Exceptionally, however, Heads of delegations or their deputies and members of the Administrative Council may exchange such telegrams with urgent transmission and delivery. + +#### XI. Special services + +##### 1 General provisions + +- A251 1.1 The provisions that form the subject of the other Chapters shall apply in their entirety to telegrams with special services, subject to the modifications prescribed in A253 to A258. +- A252 1.2 In the application of A253 to A258, the special services offered to the public may be combined subject to the class of the telegram and the acceptance of the special services in question by the Administrations of the office of origin and the office of destination. + +##### 2 Urgent transmission and delivery + +- A253 2.1 The sender of an ordinary private telegram may obtain priority in transmission and delivery by requesting the special service urgent transmission and delivery (**URGENT**). The service indication **URGENT** shall be shown before the address. +- A254 2.2 Telegrams with urgent transmission and delivery shall be transmitted with the priority indicated in A124 to A135. Their precedences among themselves shall be settled by the time of their handing in at the office of origin and receipt at transit offices except where technically impracticable. +- A255 2.3 Administrations that accept telegrams with urgent transmission and delivery only in transit must admit them among telegrams of the same origin and destination either on the + +circuits where there is direct transmission across their territory or in their retransmitting offices. + +##### **3 De luxe form** + +- A256 3.1 The sender of a telegram may request the de luxe service for his telegram, which will then be delivered on a special de luxe form and/or in a special envelope. +- A257 3.2 When the sender wishes the de luxe service to be used, the service indication **LX** should be shown before the address of telegrams sent on joyful occasions; for telegrams sent on an occasion of mourning, the service indication **LXDEUIL** should be used. +- A258 3.3 The service shall be organized by special arrangements between the Administrations concerned, regarding in particular, the different occasions on which these telegrams may be used. + +#### **XII. Stoppage of telegrams** + +##### **1 Transmission of certain telegrams as of right – Notification of stoppage** + +- A259 1.1 The right to stop transmission of certain private telegrams as provided for in Article 194 [1] of the Convention shall be exercised by the terminal or transit telegraph offices subject to reference to the appropriate authority, which shall decide without appeal. +- A260 1.2 SVH telegrams, government telegrams and service telegrams shall be entitled to transmission as of right. Telegraph offices shall exercise no control over these telegrams. +- A261-A264 Deleted. +- A265 1.3 The origin Administration of the telegrams must be notified of the stoppage of any telegram. + +#### **XIII. Archives** + +##### **1 Archives** + +- A266 1.1 The original or facsimile copies of telegrams and the relevant documents relating to handing in, transmission (if practicable) and delivery, which should be retained by the Administrations, shall be preserved with all precautions necessary to ensure secrecy, until the accounts relative thereto are settled and, in any case, for at least six months counted + +##### --- **4 Article 19 of the Convention – Stoppage of Telecommunications** + +1. Members reserve the right to stop the transmission of any private telegram which may appear dangerous to the security of the State or contrary to their laws, to public order or to decency, provided that they immediately notify the office of origin of the stoppage of any such telegram or any part thereof, except when such notifications may appear dangerous to the security of the State. +2. Members also reserve the right to cut off any other private telecommunications which may appear dangerous to the security of the State or contrary to their laws, to public order or to decency. + +from the month after that in which the telegram was handed in. Administrations may preserve the information by any other means, e.g. magnetic or electronic records. + +A267 1.2 However, should an Administration deem it desirable to destroy such documents before the above-mentioned period, and hence is not in a position to carry out an enquiry in respect of the services for which it is responsible, such Administration shall bear all the consequences both as regards refund of charges and any difference in international accounts that might otherwise have been observed. + +##### **2 Inspection of original forms of telegrams – Supplying copies of telegrams** + +A268 2.1 Subject to the exceptions contemplated in Article 22 (No. 137) of the Convention [1], originals or copies of telegrams may be shown only to the sender or the addressee, after verification of his identity, or to the authorized representative of one of them. + +A269 2.2 During the minimum period fixed for preservation of the records, the sender and the addressee of a telegram or their authorized representatives shall have the right to obtain certified copies or photocopies: + +A270 2.2.1 of this telegram; + +A271 2.2.2 of the delivery copy, if this copy or a duplicate of it has been preserved by the destination Administration. + +A272 2.3 Administrations may fix a charge for copies and photocopies of originals or of copies delivered in accordance with A268 to A271. + +A273 2.4 Administrations shall not be bound to show or to furnish copies or photocopies of the documents mentioned above unless the senders, the addressees or their authorized representatives furnish the particulars necessary for tracing the telegrams to which their requests relate. + +### DIVISION B + +### OPERATIONAL PROVISIONS APPLYING TO MORSE AND SOUNDER WORKING + +#### I. Morse code + +##### 1 Morse code signals + +B1 1.1 The following are the written characters that may be used and the corresponding Morse code signals: + +B2 1.1.1 *Letters* + +| | | | | | | +|------------|-------|---|------|---|-------| +| a | .- | i | .. | r | .-. | +| b | -... | j | .--- | s | ... | +| c | -. -. | k | -. - | t | - | +| d | -.. | l | .-.. | u | ..- | +| e | . | m | -- | v | ...- | +| accented e | ..-.. | n | -. . | w | .-- | +| f | ..-. | o | --- | x | -..- | +| g | --. | p | .--. | y | -. -- | +| h | .... | q | --.- | z | --.. | + +B3 1.1.2 *Figures* + +| | | | | +|---|-------|---|-------| +| 1 | .---- | 6 | -.... | +| 2 | ..--- | 7 | --... | +| 3 | ...-- | 8 | --.. | +| 4 | ....- | 9 | ----. | +| 5 | ..... | 0 | ----- | + +B4 1.1.3 *Punctuation marks and miscellaneous signs* + +| | | | +|--------------------------------------------------------------------------------------------------------|---------|---------| +| Full stop (period) ..... | [.] | .-.-.- | +| Comma ..... | [,] | --..-- | +| Colon or division sign ..... | [:] | ---... | +| Question mark (note of interrogation or request for repetition of a transmission not understood) ..... | [?] | ..--.. | +| Apostrophe ..... | ['] | .---- | +| Hyphen or dash or subtraction sign ..... | [-] | -....- | +| Fraction bar or division sign ..... | [/] | -. -. | +| Left-hand bracket (parenthesis) ..... | [(] | -. --. | +| Right-hand bracket (parenthesis) ..... | [)] | -. --.- | +| Inverted commas (quotation marks) (before and after the words) ..... | [ " " ] | .-.-.- | +| Double hyphen ..... | [=] | -....- | +| Understood ..... | | ...- | + +| | | +|-------------------------------------------------|-----------| +| Error (eight dots) | ........ | +| Cross or addition sign | [+] .-.-. | +| Invitation to transmit | -.- | +| Wait | .-... | +| End of work | ...-.- | +| Starting signal (to precede every transmission) | -.-.- | +| Multiplication sign | [×] -..- | + +##### 2 Spacing and length of the signals + +- B5 2.1 A dash is equal to three dots. +- B6 2.2 The space between the signals forming the same letter is equal to one dot. +- B7 2.3 The space between two letters is equal to three dots. +- B8 2.4 The space between two words is equal to seven dots. +- B9 2.5 On the Wheatstone instrument, where perforators are used, the space between two letters shall be equal to one *centre hole* perforation and the space between two words shall be equal to three *centre holes*. + +##### 3 Transmission of signs for which there is no corresponding signal in the Morse code + +- B10 3.1 Signs that have no corresponding signal in the Morse code, but that are acceptable in the writing of telegrams, shall be sent as follows: + +###### 3.2 Multiplication sign + +- B11 3.2.1 For the multiplication sign, the signal corresponding to the letter X shall be transmitted. + +###### 3.3 Percentage or per thousand sign + +- B12 3.3.1 To indicate the signal % or ‰, the figure **0**, the fraction bar and the figures **0** or **00** shall be transmitted successively (i.e. **0/0**, **0/00**). +- B13 3.3.2 A whole number, a fractional number, or a fraction, followed by a % or ‰ sign, shall be transmitted by joining up the whole number, the fraction number, or the fraction to the % or ‰ by a single hyphen. + +Examples: For 2%, transmit **2-0/0**, and not **20/0**. + +For $4\frac{1}{2}$ ‰, transmit **4-1/2-0/00**, and not **41/20/00**. + +##### 3.4 Inverted commas (quotation marks) + +- B14 3.4.1 The special signal for inverted commas shall be transmitted before and after the word or words. However, where code converters are used, the apostrophe may be transmitted twice before and twice after the word or words to signal inverted commas (quotation marks). + +##### 3.5 Minute and second signs + +- B15 3.5.1 To transmit the minute (') or second (") signs, when such signs follow figures – for example 1'15" – the apostrophe signal (. - - - - .) must be used once or twice as appropriate. The signal (. - . . - .) reserved for inverted commas may not be used for the second sign. + +##### 4 Transmission of groups of figures and letters, of ordinal numbers or of fractions + +- B16 4.1 A group consisting of figures and letters shall be transmitted without spaces between figures and letters. +- B17 4.2 Ordinal numbers composed of figures and letters, 30me, 25th, etc., shall be transmitted in the form **30ME**, **25TH**, etc. +- B18 4.3 A number that includes a fraction shall be transmitted with the fraction linked to the whole number by a single hyphen. + +Example: For 13/4, transmit **1-3/4**, and not **13/4**. +For 3/4 8, transmit **3/4-8**, and not **3/48**. +For 3631/2 4 5642, transmit **363-1/2 4 5642**, and not **3631/2 4 5642**. + +#### II. General transmission rules + +- B19 **1** All correspondence between two offices shall begin with the call signal. +- B20 1.1 For calling, the calling office shall transmit the call sign (not more than twice) of the office required, the word **DE** followed by its own call sign, the appropriate service abbreviation to indicate a priority telegram, an indication of the reason for the call and the signal – . – unless there are special rules peculiar to the type of apparatus used. The call shall always be made at hand speed. +- B21 **2** The office called must reply immediately by transmitting the call sign of the calling station, the word **DE** followed by its own call sign and the signal – . – +- B22 2.1 If the office called is unable to receive, it shall give the *wait* signal. If it expects the wait to exceed ten minutes, the reason and probable duration shall be given. +- B23 2.2 When an office called does not reply, the call may be repeated at suitable intervals. +- B24 2.3 When the office called does not reply to the repeated call, the condition of the circuit must be examined. +- B25 **3** The double hyphen (– . . . –) shall be transmitted either to separate: +- B26 3.1 the preamble from the service indications; +- B27 3.2 the service indications from each other; +- B28 3.3 the service indications from the address; +- B29 3.4 the office of destination from the text; +- B30 3.5 the text from the signature. +- B31 **4** A transmission, once begun, may not be interrupted to give place to a communication of higher priority except in a case of absolute urgency. + +- B32 5 Every telegram shall be terminated with a cross signal (.-.-.). +- B33 6 The end of the transmission shall be indicated by the cross signal (.-.-.) followed by the *invitation to transmit* signal **K** (-.-.). +- B34 7 The end of work shall be indicated by the office that transmitted the last telegram. The correct indication is the *end of work* signal (.-.-.). + +#### III. Transmission of telegrams with identical text + +##### 1 Identical texts + +- B35 1.1 When an office has to transmit to the same office more than five telegrams having identical texts and comprising more than 50 actual words, it may transmit the text once only. In that case, the text shall be transmitted in the first telegram only, and the text of all the telegrams with identical text that follow shall be replaced by the words **TEXT NR . . .** (number of first telegram). +- B36 1.2 This procedure necessitates the transmission in succession of all telegrams with identical text. +- B37 1.3 The receiving office must be informed of the transmission of telegrams with identical text by a service note on the following lines: +... **TELEGRAMS WITH IDENTICAL TEXT FOLLOW** +- B38 1.4 When reception is possible by means of perforated tape, the receiving office should be informed in ample time to allow it to receive telegrams with identical text by tape. + +#### IV. Transmission irregularities – Service notes + +- B39 1 To indicate *wait*, the corresponding signal (.-...) shall be transmitted. +- B40 2 If the sending operator becomes aware of an error, he shall stop, give the error signal (.....), repeat the last word correctly transmitted, and continue the transmission. +- B41 3 If it is necessary to interrupt the transmission for any reason, the procedure shall be as follows until transmission stops. +- B42 3.1 Morse simplex, transmit a series of dots. +- B43 3.2 Morse duplex, transmit the letters **BK**. +- B44 3.3 Once transmission has been stopped, the receiving operator shall repeat the last word correctly received followed by a question mark. The sending operator shall resume transmission from that word. +- B45 3.4 If a repetition is asked for after a long interruption, the telegram and the part of the telegram in question must be precisely indicated. +- B46 4 Service notes **XQ** can be interposed between telegrams of a series. + +#### V. Checking the number of words transmitted – Acknowledgement of receipt + +##### 1 Checking the number of words transmitted + +- B47 1.1 Where the receiving operator finds a discrepancy between the number of actual words shown in the preamble line and the number received, he shall notify the sending operator by indicating the number of words received, followed by the first character of each word (example: **17 WDS J C R B 2 D . . .** etc.). If the sending operator has simply made an error in transmitting the number of words, he shall reply **ADMITTED** and indicate the actual number of words (example: **17 ADMITTED**); if not, he shall rectify the passage found to be incorrect according to the initials received. In both cases, he shall interrupt, if necessary, the transmission of the initials as soon as he is able to rectify or confirm the number of words. + +##### 2 Acknowledgement of receipt + +- B48 2.1 After the verification of the number of words and the rectification of any errors, the receiving office shall acknowledge to the sending office the receipt of the telegram or telegrams forming the series. +- B49 2.2 A single telegram shall be acknowledged by the letter **R** followed by the number of the telegram received, for example: **R 436**. +- B50 2.3 For an **SVH** telegram, a government telegram with priority, or a telegram relative to the application of the United Nations Charter, receipt shall be acknowledged in the form: **R 436 SVH** or **R 436 ETAT**. +- B51 2.4 For a series of telegrams, the letter **R** shall be given with the number of telegrams received, and also the first and last numbers of the series, for example, **R 6 157 162**. +- B52 2.5 If the series includes **SVH** telegrams or government telegrams with priority, the acknowledgement of receipt shall be supplemented by the numbers of these telegrams thus: +**R 6 157 162 INCLUDING 159 SVH 161 ETAT** +- B53 2.6 In every case, the acknowledgement of receipt must be transmitted immediately in the following form: +**LR 683 MISSING 680 RETAINED 665** [This acknowledgement of receipt contains the last received (**683**), the number **680** missing and the number **665** retained.] +- B54 2.7 The sending operator must request the acknowledgement of receipt immediately after the transmission of an **SVH** telegram, a government telegram with priority or a telegram relative to the application of the United Nations Charter. In such cases, the acknowledgement of receipt shall take the following form: +**LR SVH 683** + +#### VI. Transmission procedures + +- B55 1 Transmission may be conducted as follows, according to the volume of traffic: +- B56 1.1 alternate transmission of telegrams; +- B57 1.2 alternate transmission in series. + +- B58 2 In alternate transmission, the receiving office shall not have the right to interrupt the transmission to give place to a communication of higher priority, except in cases of absolute urgency, (see B31). +- B59 3 The exchange of telegrams in alternate order between two offices in direct communication shall follow the rules concerning the order of transmission. +- B60 3.1 A telegram of higher priority in order of transmission shall not count in the alternate order. +- B61 3.2 The office that has just finished a transmission shall have the right to continue when it has telegrams awaiting transmission or when telegrams reach it that are entitled to priority over those that the office in communication has to transmit, unless the latter has already begun its transmission. +- B62 3.3 When an office has finished transmitting, the office that has just received shall transmit in its turn; if the latter has nothing to transmit, the former shall continue to send its traffic. If neither has anything to transmit, the offices shall exchange the *end of work* signal. +- B63 4 When traffic so justifies, and subject to agreement between the offices in communication, telegrams shall be exchanged in series alternately. +- B64 4.1 Telegrams of the same series shall be considered as forming a single transmission. However, each correctly received telegram shall be retained at the receiving position until the next but one telegram begins or for the time normally required to transmit a telegram of average length. +- B65 4.2 Each series shall comprise a maximum of five telegrams. Nevertheless, every telegram containing more than 100 words on the Morse instrument or more than 150 words on sound-reading instruments shall count as a series or terminate a series already in course of transmission. +- B66 4.3 The sending office shall end a series in course of transmission when it has only letter telegrams to send. It shall not resume transmission until the office with which it is working has no more telegrams of higher priority on hand. + +### DIVISION C + +### OPERATIONAL PROVISIONS APPLYING TO PRINTING TELEGRAPH SYSTEMS + +#### I. Transmission signals + +##### 1 Transmission signals of International Telegraph Alphabet No. 2 + +- C1 1.1 Figure 1 shows the signals of the International Telegraph Alphabet No. 2. +- C2 1.2 In the interests of speed and efficiency in the movement of telegraph traffic, the use of the five-unit code is recommended in accordance with International Telegraph Alphabet No. 2 as defined in Recommendation S.1. However, this provision need not apply to Administrations which by mutual agreement have made other arrangements in respect of a particular circuit or network. In such cases, the Administrations concerned could provide suitable facilities for converting from their method of operation to the five-unit code of International Telegraph Alphabet No. 2 whenever it becomes desirable to interconnect with offices using the latter system. +- C3 1.3 The graphic characters that have a corresponding signal in International Telegraph Alphabet No. 2 are those shown in A16, A17 and A18. +- C4 1.4 The coding of the printed characters and control characters conforming to Recommendation S.1 is set out in Figure 1. + +![Figure 1/F.1: International Telegraph Alphabet No. 2 (as shown on perforated tape). The image shows a strip of paper tape with five rows of potential perforations. Black dots represent holes. Below the tape is a table mapping these hole patterns to characters in 'Figure case' and 'Letter case'.](74448f9178da618d823e5a5dadc56fb5_img.jpg) + +| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | +|---|---|---|---|---|---|---|---|---|---|----|----|----|----|----|----|----|----|----|----|----|----|----|----|----|----|----|----|----|----|----|----|----| +| | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | +| 1 | – | ? | : | ⊠ | 3 | | | 8 | ⍿ | ( | ) | . | , | 9 | 0 | 1 | 4 | ' | 5 | 7 | = | 2 | / | 6 | + | | < | ≡ | ↓ | ↑ | △ | □ | +| A | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | | | | | | | + +● Represents a perforation in the paper tape (Z condition or stop polarity) +1 Figure case +A Letter case +⊠ or ✦ *Who are you?* in the international telex and gentex services. The combinations Nos. 6, 7 and 8 in the figure case are available for national usage. +⍿ Audible signal (bell) +< Carriage return +≡ Line feed +↓ Letter-shift +↑ Figure-shift +△ or → Space +□ Unperforated tape or start polarity (not normally used) + +Figure 1/F.1: International Telegraph Alphabet No. 2 (as shown on perforated tape). The image shows a strip of paper tape with five rows of potential perforations. Black dots represent holes. Below the tape is a table mapping these hole patterns to characters in 'Figure case' and 'Letter case'. + +T0102440-92 + +**Figure 1/F.1 – International Telegraph Alphabet No. 2 (as shown on perforated tape)** + +- C5 1.4.1 To indicate a blank, the signal space shall be transmitted. + +- C6 1.4.2 To indicate a transmission error, proceed as per C94. +C7 1.4.3 To indicate wait, the characters **MOM** shall be transmitted. + +##### 2 Transmission of signs for which there is no corresponding signal in the telegraph alphabet + +- C8 2.1 Signs that have no corresponding signal in a telegraph alphabet but are acceptable in the writing of telegrams shall be sent in such a way as not to distort the meaning and taking into account the possibilities offered by the telegraph alphabet as follows. +- C9 2.1.1 *Percentage sign (%)*: Successively transmit the figure **0**, the fraction bar and the figure **0** (example: **0/0**). +- C10 2.1.2 *Per thousand sign (‰)*: The ‰ sign shall be indicated by transmitting the figure **0** followed by the fraction bar and the figures **00** (example: **0/00**). +- C11 2.1.3 *Combination of numbers and % or ‰*: A whole number, a fractional number, or a fraction, followed by a % or a ‰ sign, shall be transmitted by joining up the whole number, the fractional number or the fraction to the % or ‰ sign by a dash. +- Examples: For 2% transmit **2-0/0**, and not **20/0**. +For 4½‰, transmit **4-1/2-0/00**, and not **41/20/00**. +- C12 2.1.4 *Inverted commas (quotation marks) (")*: Transmit the apostrophe (') twice at the beginning and end of the text within the inverted commas (" "). +- C13 2.1.5 *Minute (') and second (") signs*: The minute sign and the second sign shall be transmitted by means of the apostrophe sign, transmitted once for the minute sign, and twice for the second sign. + +##### 3 Transmission of ordinal numbers, groups of figures and letters or of numbers that include fractions + +- C14 3.1 Ordinal numbers composed of figures and letters: 30me, 25th, etc., shall be transmitted in the form of **30ME**, **25TH**, etc. +- C15 3.2 Letters or groups of letters followed by letters or figures placed above or below the line shall be transmitted in the form substituted for them by the sender. +- C16 3.3 Groups consisting of figures and letters must be transmitted as set forth in the telegram. +- Examples: 3B is transmitted as **3B**. +AG 25 is transmitted as **AG 25**. +- C17 3.4 A number that includes a fraction shall be transmitted with the fraction linked to the whole number by a single hyphen. +- Examples: For 1¾, transmit **1-3/4**, and not **13/4**. +For ¾ 8, transmit **3/4-8**, and not **3/48**. +For 363½ 4 5642, transmit **363-1/2 4 5642**, and not **3631/2 4 5642**. + +#### II. General provisions for transmission of telegrams + +##### 1 Calling + +- C18 1.1 Correspondence between two offices shall begin with the call signal. However, on circuits operated by start-stop apparatus, unless a different arrangement has been made, the apparatus must be connected in such a way that the transmitting office may start transmission of telegrams without a special call or previous notice to the receiving office. +- C19 1.2 A transmission, once begun, may not be interrupted to give place to a communication of higher priority except in case of absolute urgency. +- C20 1.3 Before transmission of a telegram actually begins, the condition of the circuit and the availability of the receiving apparatus shall be checked. To this end, in the systems that allow it, the signals *figure-shift* and *D* (or Who are you?) shall be transmitted. When the correspondent's answer-back code has been correctly received, the answer-back code of the transmitting station shall be transmitted. + +##### 2 Transmission with running series of numbers + +- C21 2.1 Each Administration shall have the right to number in series telegrams to be transmitted over international circuits. In each case it shall notify its intention to the Administrations concerned. +- C22 2.2 The serial number shall be transmitted at the beginning in the numbering line. Administrations shall each decide as far as it is concerned, whether the office number shall be transmitted. If so, it will be included in the numbering line. +- C23 2.3 When serial numbers are used, all telegrams shall be numbered in unbroken series. A special series may be used for each section or circuit by agreement between the Administrations concerned. This series shall then differ from the series used for the other sections or circuits by distinguishing figures or a prefix composed of letters. +- C24 2.4 Offices in correspondence shall agree upon the start and finish of the series of numbers and upon the periodicity of the start of the cycle. +- C25 2.5 In all cases, telegrams that are to be diverted shall receive new serial numbers. +- C26 2.6 When the receiving office observes that a serial number is missing, it must inform the sending office at once in order that the necessary inquiries may be made. +- C27 2.7 When it is necessary to strike out a serial number that has already been used, the transmitting office shall inform the receiving office by service advice. + +#### III. General provisions for reception + +- C28 1 When reception is unintelligible, the operator shall act according to the special rules given for the different methods of operation (see C49 to C55 and C79 to C87). +- C29 2 If there is a discrepancy between the number of actual words shown in the preamble line and the number received or any other irregularities, the operator shall act according to the special provisions given for the different methods of operation (see C52 to C55 and Recommendation F.31). + +C30 3 When any discrepancy or irregularity does not arise from a mistake in transmission, the rectification can only be made by agreement reached, if necessary, by service advice between the office of origin and the office in correspondence. Failing such agreement, the number of words indicated by the office of origin or any other irregularity shall be admitted, the telegram being forwarded, meanwhile, with the service instruction "Correction to follow . . ." transmitted in the abbreviated form [example: **CTF . . . WORD(S)**], the meaning of which shall be indicated by the office of destination on the copy delivered to the addressee. The correction shall be requested by service advice from the office of origin by the office that has inserted the service instruction **CTF . . .** + +#### IV. Special provisions for point-to-point operations + +##### 1 Transmission of telegrams to tape-printing systems + +C31 1.1 The double hyphen (=), which is always preceded by a space but must never be followed by a space, shall be transmitted either to separate: + +C32 1.1.1 the preamble line from the service indications; + +C33 1.1.2 the service indications from each other; + +C34 1.1.3 the service indications from the address; + +C35 1.1.4 the office of destination from the preceding parts of the address; + +C36 1.1.5 the office of destination from the text; + +C37 1.1.6 the text from the signature. + +C38 1.2 Each telegram shall be terminated by a cross (+). The cross must always be preceded and followed by a space. + +C39 1.3 If the sending operator becomes aware of an error, he shall proceed as in C94. + +C40 1.4 Example of format to be used in tape-printing systems: + +**MOH1431 KIEV 12 18 08302 =URGENT =KARL MUELLER +ROSSMARKT 13/1 =HAMBURG =WIR KOMMEN SCHON HEUTE +ABEND =KARIN +** + +1 Distinguishing letters and/or serial number (see C21 to C27). + +2 Preamble line, the parts referred to in A30 to A38. + +##### 2 Transmission of telegrams to page-printing systems + +C41 2.1 When page-printing teleprinters are used for reception, the transmitting office or offices should transmit traffic to the receiving office without error according to the layouts shown in the C46 to C48. + +C42 2.2 Every line must consist of not more than 69 printing characters (including spaces), except for the address in which lines should not exceed 43 (and preferably no more than 30) printing characters. + +C43 2.3 The transmitting operator should transmit each word as a whole and should avoid dividing words between the end of one line and the beginning of the next. + +C44 2.4 The sending office should eliminate errors before transmission. + +C45 2.5 When preparing telegrams in page format that may be circulated over the gentex network or via the telegram retransmission system, the additional provisions contained in C56 to C115 should be observed. + +C46 2.6 Example: Ordinary private telegram + +← ≡ + +**ZCZC LPA264 LGE906 PLG408** ← ≡1 + +**FRXX CO GBLG 020** ← ≡2 + +**LONDON/LG 20 26 1405** ← ≡ ≡ ≡3 + +**DUPONT** ← ≡ + +**15 RUE DE LA REPUBLIQUE** ← ≡ + +**NANTES** ← ≡ ≡ ≡ + +**JOHN AND SUE LEAVE BY ROAD TODAY EXPECTED TO ARRIVE** ← ≡ + +**EARLY TOMORROW** ← ≡ + +**DAD** ← ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡4 + +**NNNN**5 + +1 Distinguishing letters and/or serial number (C21 to C27). + +2 The pilot line may be omitted when transmitting to systems that do not demand it. + +3 Preamble line, the parts referred to in A30 to A38. + +4 Minimum of five spaces before the signature. + +5 Ten letter-shifts follow NNNN, except in relations that do not require them. + +C47 2.7 Example: POSTFIN telegram with postal service indications1 + +← ≡ + +**ZCZC AKW112 MDT8067** ← ≡ + +**INBY CJ GBMT 024** ← ≡2 + +**LONDON/MT 24 26 1130** ← ≡ ≡ ≡ + +**POSTFIN** ← ≡ + +**AVIS PAIEMENT** ← ≡ + +**BOMBAY** ← ≡ ≡ ≡ + +**MANDAT 2793 BRADFORD 10610 GB MOHD YOUNAS** ← ≡ + +**500 (FIVE HUNDRED) RUPEES** ← ≡ + +**MONSIEUR JEAN DE BIASE 74 APOLLO BUNDO** ← ≡ + +**HAPPY BIRTHDAY** ← ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ + +NNNN3 + +1 **POSTFIN** telegrams are under study within the UPU. + +2 The pilot line may be omitted when transmitting to systems that do not demand it. + +3 Ten letter-shifts follow **NNNN** except in relations that do not require them. + +C48 2.8 Example: POSTFIN telegram containing a postal cheque order + +← ≡ + +**ZCZC ABC123 BBAA8371** ← ≡ + +**FRPA CJ CHBX 018** ← ≡1 + +**BERN/1/SCHANZENPOST 18/17 15 1105** ← ≡ ≡ ≡ + +**POSTFIN** ← ≡ + +**AVIS INSCRIPTION** ← ≡ + +**PARIS** ← ≡ ≡ ≡ + +**VIREMENT 34688 ANTON SCHMIDT 30-53998 BERNE** ← ≡ + +**500 (CINQ CENTS) FRANCS FRANCAIS** ← ≡ + +**PIERRE DUBOIS 56-231089** ← + +NNNN2 + +1 The pilot line may be omitted when transmitting to systems that do not demand it. + +2 Ten letter-shifts follow **NNNN** except in relations that do not require them. + +##### 3 Reception + +C49 3.1 When reception is unintelligible the receiving operator shall interrupt the transmitting office or cause the transmission to be interrupted. + +C50 3.2 To interrupt transmission from an office, transmit a succession of letters **T** or figures **5** or, on duplex circuits, transmit a call followed by the abbreviation **BK** and an audible signal which may be repeatedly transmitted. + +C51 3.3 When interrupting the transmitting office, the reason for the interruption shall be given (paper mutilated, etc.) and the number of the last telegram correctly received (**LR . . .**) shall be indicated. + +C52 3.4 If there is a difference between the number of actual words shown in the preamble line and the number received, the operator shall send a service advice to the transmitting office, indicating the serial number of the telegram in question, the abbreviation **CK**, the number of words received, and the first character of each word. In telegrams with more than ten actual words, it is admissible to indicate each fifth or tenth actual word instead of the character of each word. In this case the indicated words shall be preceded by the abbreviation **FVS** (fives) or **TNS** (tens) respectively. For the words behind the last indicated fives or tens, the first character of each word shall be given. If the sending operator has simply made an error in transmitting the number of words, he shall reply by a + +service advice indicating and confirming the actual number of words; if not, he shall rectify by an appropriate service advice the passage found to be incorrect according to the words and/or character of the words received. + +- C53 3.5 In the case of reception by a tape-printing system, the reason for the interruption may also be followed by the last word, to which a question mark must be added, or the number of the last telegram correctly received (**LR . . .**). +- C54 3.5.1 The sending operator shall go back and continue the transmission from that word or telegram, after having been instructed to continue by **GA, RPT AA . . .**, etc. +- C55 3.6 In the case of reception by a page-printing system, the sending operator shall always go back and continue the transmission from the last telegram correctly received. + +#### V. Special provisions for gentex operations + +##### 1 General provisions + +- C56 1.1 The gentex network is made up of telegraph offices of the countries participating in the service (gentex offices), of switching centres and of telegraph channels connecting the offices to switching centres and the switching centres to one another. Either tape-printing or page-printing teleprinters are used for transmission and reception. +- C57 1.2 When page-printing teleprinters are provided for the transmission and/or reception of telegrams the particular provisions and the format of C88 to C90 must be observed. + +##### 2 Answer-back codes + +- C58 2.1 The answer-back code used in the gentex service shall be in conformity with Recommendation F.21. + +##### 3 Responsibility of transmitting or receiving stations + +- C59 3.1 The operator in the calling station is primarily responsible for the transmission of telegrams. If a telegram fails to arrive or if its text is mutilated, he will have to prove that he has followed the correct procedure. +- C60 3.2 He can provide this proof by producing the original of the telegram, the local record if there is one and by verifying that the called station's answer-back code was received without error. +- C61 3.3 The operator manning a position is responsible for seeing that there is enough paper in the machine, that the inking system is fully serviceable, and that the machine is switched to *engaged* while the ribbon and paper are being replaced. Furthermore, the operator of the receiving station shall eliminate any erroneous passages. + +##### 4 Procedures before transmission of a telegram + +- C62 4.1 At the calling station, the telegram may be provided with a reference number, which will be transmitted before the preamble line and will serve as an additional means of identifying the telegram if required. + +- C63 4.2 To set up the call with the required office, the operator of the calling station proceeds, according to the rules of his network, to obtain the required number, which is made up of: +- the prefix giving access to the called country from the calling station; + - the number of the called office. +- C64 4.3 Having set up the call, the operator at the calling station brings into operation the answer-back device in the station obtained, together with that of his own station when these two operations are not automatically controlled by the equipment in the calling or called country. The operator at the calling station checks the answer-back code he obtains against that of the required office and, if they correspond, he then begins to transmit the telegram. +- C65 4.4 If the answer-back code received is not the code expected, the reason may be one of the following: +- C66 4.4.1 the answer-back code belongs to an overflow position which can receive the telegram; transmission of the telegram can therefore begin; +- C67 4.4.2 a wrong station has been obtained. The operator sends the signal **BK**, gives the clearing signal, and again tries to put the call through to the office required. +- C68 4.5 Should this fresh attempt end in reception of the answer-back code of a position which is not an overflow position and does not belong to the office required, the operator shall proceed in accordance with C76 and C77. +- C69 4.6 If the calling station receives the busy signal, the call shall be repeated after approximately two minutes. If the second call is unsuccessful, a third call shall be made after a further two minutes. If the busy signal is again received, telegrams shall be diverted to that telegraph office in the same country shown in the routing list as the office required in such cases. +- C70 4.7 When a call is sent to a gentex office in a country providing diversion to an overflow position, connection with the required gentex office or an overflow position may be delayed. The operator of the calling station is informed thereof by reception of **MOM**. He will then await subsequent routing of his call. + +##### **5 Transmission of telegrams** + +- C71 5.1 When communication has been established with the desired telegraph office or with an overflow position, the telegram shall be transmitted in the manner described in C31 to C40 or C88 to C90. +- C72 5.2 After transmission of the telegram, the operator obtains the answer-back code of the called station and then transmits his own. The operator of the calling station then gives the clearing signal. +- C73 5.3 For interconnection between a gentex office and a telegram retransmission centre see C102 to C115. +- C74 5.4 When a calling station has several telegrams for the same office, once the calling station has made contact with that office, the operator checks the answer-back code in accordance with C64, and then transmits the telegrams one after the other taking into account C71 and, if appropriate, C102 to C115. In this case, one exchange of the answer-back codes takes place between the end of one telegram and the beginning of the following one. + +##### 6 Reception of telegrams + +- C75 6.1 The called station checks each telegram received in accordance with the provisions of A159 to A164. If correction is necessary a request must be sent by service advice to the transmitting office. When receiving from a telegram retransmission centre the request must be sent as prescribed in Recommendation F.31 (see 6.2/F.31). + +##### 7 Abnormal conditions before transmission + +- C76 7.1 Should the operator of a calling station notice, during the setting up of a call, anything that seems to him due to faulty lines or equipment, he shall give the clearing signal. +- C77 7.2 After approximately two minutes, he shall try to call again. If, once again, there are abnormal conditions he shall give the clearing signal, record the abnormal conditions on the telegram or telegrams and dispose of it or them by an alternative route. He shall then report the fault. +- C78 7.3 Should a mutilated answer-back code be received, or should there be no answer-back code at all, the operator shall give the clearing signal and proceed as in C77. + +##### 8 Abnormal conditions during transmission + +- C79 8.1 If the operator at the called station notes any errors in the text of a telegram that is being received, he shall send letters **T** or figures **5** repeatedly until transmission stops. He shall then send **MUT RPT AA . . .** [or possibly, the reference number (**SRL NR**) or the handing-in number (**TG NR**) of the first mutilated telegram when a series of telegrams is being received] and the last correctly received word or group. The operator at the calling station shall recommence transmission at the requested place. +- C80 8.2 Should a completely mutilated text be received, including mutilation of the answer-back code of the calling station, an operator noticing this before the call is broken off shall stop the transmission by sending letters **T** or figures **5** repeatedly until transmission stops. He shall then send **MUT RPT ALL**. +- C81 8.3 If the operator at the called station cannot stop a transmission, or if the text received when the transmission is resumed continues to be mutilated, he shall send the clearing signal. +- C82 8.4 After transmission if the answer-back code of the called station is not received or is incorrectly received at the end of transmission of a telegram, the operator of the calling station then gives the clearing signal. +- C83 8.5 The calling station then proceeds once more to call the required office and recommences transmission of the telegram including the service instruction **AMPLIATION** at the end of the preamble line. +- C84 8.6 The procedure described under C83 above is also applied when the call is accidentally interrupted during transmission by the calling station. +- C85 8.7 If a call is accidentally interrupted during transmission, or if a call has been cleared after transmission of **BK**, the called office holds the texts received until the calling office resumes transmission. If transmission is not resumed within twenty minutes, the called office sends a service advice to the calling office, requesting any corrections or repetitions that may be necessary. + +- C86 8.8 When a completely mutilated text is received, and the answer-back code of the calling station is also mutilated, if the call has already been cleared, the received text shall be kept for enquiry purposes. The name of the receiving station and the time of receipt shall be marked on the form. Since the receiving station cannot, in such circumstances, transmit a request to the transmitting station, the telegram will be lost if the transmitting station has failed to notice the fault. +- C87 8.9 Shortage of paper can in certain teleprinters cause the clearing signal to be sent automatically. A break in the tape or faulty tape feed shall, where possible, give rise to a local signal if the clearing signal is not sent automatically. + +##### 9 Traffic between gentex offices equipped with page-printing teleprinters + +- C88 9.1 Provisions C41 to C48 or C89 and C90 should be followed, the format being slightly modified to meet the requirements of the gentex service. + +- C89 9.1.1 Example: + +☒ ← ≡1 + +16250Z OSLO N ← ≡ + +4071TC FFM D ← ≡ + +ZCZC 18 ← ≡2 + +NOOO CO DPFF 013 ← ≡3 + +FRANKFURT AM MAIN/9 13/12 25 0935 ← ≡ ≡ ≡ + +INTERFER ← ≡ + +OSLO ← ≡ ≡ ≡ + +ARRIVING WEDNESDAY KLM FLIGHT 308 KINDLY ← ≡ + +ARRANGE HOTEL RESERVATION ← ≡ + +JUDY ← ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡4 + +NNNN ☒ ← ≡1,5 + +16250Z OSLO N ← ≡ + +4071TC FFM D + +1 Method of operating in accordance with C65. The symbol ☒ indicates the *Who are you?* signal. + +2 Transmission serial number. + +3 The pilot line may be omitted when transmitting to systems that do not demand it. + +4 Minimum of five spaces before the signature. + +5 Ten letter-shifts follow NNNN except in relations that do not require them. + +- C90 9.2 Administrations may nevertheless mutually agree to ignore the provision that the transmission should be free of errors. + +##### 10 Interworking between tape-printing and page-printing teleprinters + +- C91 10.1 When tape-printing teleprinters are used to transmit page format, they should generally be equipped in accordance with Recommendation S.5 and operated in accordance with C41 to C48. When page-printing teleprinters are used to transmit towards tape-printing teleprinters, C41 to C48 or C89 and C90 should be followed. + +##### 11 Special transmission procedures for use with format converters and/or automatic error correction devices + +- C92 11.1 Besides the transmission procedure laid down in C71, it is admissible: +- C93 11.1.1 that gentex offices equipped with tape-printing teleprinters may use the double hyphen (=, combination No. 22, figure case) whenever the carriage-return and line-feed signals (combinations Nos. 27 and 28) are used in the format C41 to C48 (notwithstanding C31 to C37). No space is shown between the double hyphen(s) and the following word. These offices will also have to transmit five spaces before the signature; +- C94 11.1.2 that gentex offices, whether equipped with page- or tape-printing teleprinters, may signal **XXXXX** (at least five times the letter X without spacing) joined to the erroneous word, followed immediately by the retransmission correctly of the erroneous word. +- C95 11.2 If a space has been transmitted after the erroneous word, the automatic error correction device will not suppress the error; if in this case error-free reception is necessary, the telegram will have to be cancelled by transmitting the expression **ANUL** space **ANUL** and ten double hyphens. The telegram in question must then be transmitted again including all the exchanges of answer-back codes. +- C96 11.3 By mutual agreement between Administrations, the foregoing procedures may also be adopted when format converters or error-correcting devices are not employed in order to enable operators to observe a uniform transmission procedure. + +##### 12 Service advices (A) and use of codes + +- C97 12.1 When a telegram is sent on, marked **CTF**, the sending office shall be informed of the fact by a service advice (**A**). +- C98 12.2 Service advices shall preferably make use of the codes listed in C101 and in the list of additional five letter codes which should be published as an Annex to the ITU Operational Bulletin. +- C99 12.3 The codes listed in C101 shall also be used when, in exceptional circumstances, operators have to communicate while a call is still connected. +- C100 12.4 Deleted. +- C101 12.5 *Service codes and abbreviations to be used in gentex operation* + +| ABBREVIATION | MEANING | +|-------------------|-------------------------| +| ABS | Telegraph office closed | +| ADRS | Address | +| ANH | Congestion | +| ANUL . . . | Delete . . . | + +| | | +|-------------------|--------------------------------------------------------------------------| +| BK | I cut off | +| CALL NR | National call number of a gentex office | +| CCT | Circuit | +| CFM | Please confirm/I confirm | +| CI | Conversation impossible | +| CK | Please check number of words | +| CLA | Class of telegram | +| CRV | How do you receive? | +| CTF | Correction to follow | +| DBL | Double word(s) | +| DEB | Overflow position | +| DER | Out of order | +| DER MOM | Bad reception, do not cut off, we are testing the line | +| DETR . . . | I am re-routing to . . ./Re-route to . . ./Alternative route | +| DIF | Different | +| DTE | Date of handing-in | +| FIG | Figure(s) | +| FVS | Fives | +| GA | You may transmit | +| IND | Answer-back code | +| INQ | Position specializing in the handling of service notes and advices | +| LTR | Letter(s) | +| MNS | Minutes | +| MOM | Please wait! | +| MOM PPR | Please wait! I have paper trouble | +| MUT | Mutilated | +| NA BK | Correspondence with this telegraph office is not admitted.
I cut off. | +| NC | No circuit | +| NCH | Number changed | +| NOT R | Not received | +| NP | The called number is not/no longer in use | +| NR | Number | +| OCC | Busy | + +| | | +|-----------------------------------------|----------------------------------------------------------------------------------------------------------| +| O/D | Telegraph office of destination | +| OK | Agreed | +| OMTD | Omitted | +| O/O | Telegraph office of handing-in | +| PBL | Preamble of telegram | +| PPR | Paper | +| QGA | May I transmit? | +| QOK | Do you agree? | +| R . . . | Received . . . | +| RAFSO | Second application | +| RAP | I shall call you again | +| RDI | Redirected call | +| REF . . . | With reference to . . . | +| ROUTE | Route to . . ./I am routing to . . ./Route | +| RPFR | Please prepare your reperforator | +| RPFR TXT | Prepare your reperforator because of long or difficult text or because of telegrams having the same text | +| RPT | Repeat please/I repeat | +| RPT AA . . . | Repeat all after . . | +| RPT AB . . . | Repeat all before . . | +| RPT ALL | Repeat the whole telegram | +| RPT BN . . . | Repeat all between . . . and . . | +| RPT SRL NR . . . | Repeat reference number given by the transmitting office . . | +| RPT TG NR | Repeat telegram number | +| RPT TXT | Repeat text | +| RPT WA . . . | Repeat word after . . | +| RPT WB . . . | Repeat word before . . | +| SIG | Signature | +| SRL NR | Reference number given by a gentex transmitting office | +| SVIN | Service indication | +| SVP | Please | +| T (in either shift)
repeated
| Stop your transmission | +| TCHN | Technical service/I shall advise the technical service | +| TEST MSG | Please send a test message | + +| | | +|--------------|-----------------------------------------------------------| +| TG | Telegram | +| TG NR | Telegram number given by the handing-in office | +| TNS | Tens | +| TPLE | Triple word(s) | +| TPR | Teleprinter | +| TXT | Text | +| UTCOD | Use the gentex code | +| W | Word(s) | +| WEFXU | Waiting reply to our service advice | +| WTG | We are waiting/I am waiting | +| XXXXX | Error signal | +| +? | I have finished my transmission. Do you wish to transmit? | + +#### **VI. Interworking between the telegram retransmission system and the gentex network** + +- C102 1.1 The special provisions for gentex operation (C56 to C101), except as specified below, will be applied to traffic between gentex telegraph offices and telegram retransmission centres in both directions. +- C103 1.2 Administrations will designate the gentex offices open to traffic with telegram retransmission centres and will publish this information in the *Routing Table for Offices Taking Part in the Gentex Service* [6] (Recommendation F.93) and in the *List of Indicators for the Telegram Retransmission System and Telex Network Identification Codes* [7] (Recommendations F.32 and F.69). +- C104 1.3 The format and arrangements described in Recommendation F.31 shall apply except that channel sequence numbering is not applicable in either direction on the channels connecting the two systems. +- C105 1.4 In the direction gentex to telegram retransmission system, the telegram identification group, which will immediately follow the start-of-message signal, shall be composed of two letters identifying the originating country or Administration (in accordance with Recommendations F.32 and F.69), the call-number of the gentex office followed by one or two letters identifying the gentex position and the serial number of the telegram which that position is transmitting. The group shall not include a space nor exceed 15 printing characters. +- C106 1.5 In the direction telegram retransmission system to gentex, all preceding channel sequence numbers and the telegram identification group will be transmitted. +- C107 1.6 The transmission of each telegram should be immediately preceded and followed by the exchange of the answer-back codes. +- C108 1.7 By mutual agreement of the Administrations concerned, the gentex call number of the office of destination may be entered into the pilot line immediately following the number of chargeable words and separated from it by a space. + +- C109 1.8 *Exceptions to provisions C31 to C101* +- C110 1.8.1 The signals, service codes and abbreviations (bell signal, **RPFR**, **MOM**, etc.) proper to the gentex service to announce or to draw attention to an abnormal situation must not be used. +- C111 1.8.2 Except where otherwise agreed, only the clearing signal may be used to interrupt transmission. In this case, the calling station shall recommence transmission at the beginning of the interrupted telegram. +- C112 1.8.3 An error noted after the end-of-message signal **NNNN** has been sent will be corrected by sending a service advice. +- C113 1.8.4 Except where otherwise agreed, the answer-back code of the receiving station correctly received at the end of transmission serves as proof of reception for all classes of telegrams. +- C114 1.8.5 Repetition of a telegram that has already been completely transmitted will be effected in the form of a service advice (see D25 to D32 and D39). +- C115 1.9 *Example of the recommended format for transmission between the gentex network and the telegram retransmission system* + +☒ ← ≡ + +**1299RC NYC UI** ← ≡ + +**4144A DARMST D** ← ≡ + +**ZCZC DP4144A154** ← ≡1 + +**UINY HL DPDA 027** ← ≡2 + +**JUGENHEIM A D BERGSTRASSE 27/24 12 1926** ← ≡ ≡ ≡ + +**LT** ← ≡ + +**MISS GISELLA COHEN** ← ≡ + +**67 BROADSTREET** ← ≡ + +**NEWYORK(10004)** ← ≡ ≡ ≡ + +**1000 DOLLARS CABLED TO NEWYORK THROUGH SWISS** ← ≡ + +**BANK CORPORATION STOP PLEASE CABLE IF NOT** ← ≡ + +**RECEIVED LOVE** ← ≡ + +**DADDY** ← 3 + +NNNN ← ≡4,5 + +1299RC NYC UI ← ≡ + +4144A DARMST D + +- 1 In the direction gentex to telegram retransmission system, only the telegram identification group shall be transmitted. In the direction telegram retransmission system to gentex, all preceding channel sequence numbers and the telegram identification group will be transmitted. +- 2 The pilot line may be omitted when transmitting to systems that do not demand it. +- 3 Minimum of five spaces before the signature. +- 4 Ten letter-shifts follow NNNN, except in relations that do not require them. +- 5 The symbol $\boxtimes$ indicates the *Who are you?* signal. + +### **DIVISION D** **TELEGRAPH SERVICE CORRESPONDENCE** + +#### **I. Telegraph service correspondence** + +##### **1 Definitions** + +- D1 1.1 *Service telegrams* are telegrams that relate to public international telecommunication and are exchanged between: +- D2 1.1.1 Administrations; +- D3 1.1.2 Recognized operating agencies; +- D4 1.1.3 Administrations and recognized operating agencies; +- D5 1.1.4 Administrations and recognized operating agencies on the one hand and the Secretary-General of the ITU on the other hand. +- D6 1.2 *Service advices* relate to details of service or to the working of circuits and telegraph offices and to transmission of traffic. They shall be exchanged between telegraph offices. They may also be initiated by the sender or addressee of any telegram to give instructions or to obtain information about that telegram. + +#### **II. Service telegrams and service advices** + +##### **1 General provisions** + +- D7 1.1 Service telegrams and service advices must be used only where essential and must be worded as briefly as possible. Telegraph offices and all persons authorized to use service telegrams shall take all necessary steps to restrict, so far as practicable, the number and length of those telegrams (see C98). +- D8 1.2 Service telegrams may be exchanged between Administrations and recognized operating agencies on the one hand and the Secretary-General of the ITU, the Chairman of the Administrative Council of the ITU, the Director of the TSB, the Director of the BR and all persons authorized to use service telegrams on the other hand relating to the official business of the ITU. +- D9 1.3 They shall be expressed in any of the working languages of the ITU5 unless the Administrations concerned have agreed to use another language. +- D10 1.4 Service telegrams and service advices shall be denoted by the service indication: **A**. +- D11 1.5 The priority of transmission of service telegrams and service advices is shown in A136 to A144. + +--- + +5 The possible difficulties that might arise for certain Administrations due to the use of Spanish language in service advices will be considered further by Study Group 2. + +##### **2 Service telegrams** + +- D12 2.1 Service telegrams must contain in the preamble line the name of the office of origin, the number of actual words and the date and time of issue or handing in. Service telegrams may have a signature (see D40). +- D13 2.2 Service telegrams must bear a registered address (see A77). + +##### **3 Service advices** + +###### **3.1 General provisions** + +- D14 3.1.1 The object of a service advice concerning a telegram already transmitted or in course of transmission is in most cases either to correct an error or to give instructions about the telegram. Such service advices are initiated by one of the offices having taken part in the transmission of the original telegram. +- D15 3.1.2 During the minimum period for preservation of records, after first, if necessary, establishing their status and identity, the sender or the addressee (or their authorized representative) of any telegram that has been transmitted may, by service advice, either: +- a) give instructions as to the delivery of the telegram following receipt of a service advice notifying its non-delivery; or + - b) have information obtained as to the identity of the sender. + +###### **3.2 Procedure** + +###### **3.2.1 End-to-end servicing** + +- D16 3.2.1.1 End-to-end servicing is a mode of operation in which the service advices are passed between the office of origin and the office of destination of the relevant telegram without interception at transit offices for the purposes of adding the serial and/or the channel sequence numbers of the original telegram as references. +- D17 3.2.1.2 This mode of operation should be used whenever practicable. + +###### **3.2.2 Follow-on service advices** + +- D18 3.2.2.1 A follow-on service advice is a voluntary correction or inquiry initiated by the office of origin of the subject telegram. The originating office shall quote as reference the following particulars of the original telegram: +- D19 a) the serial numbers shown in the numbering line together with the date (the number(s) and date in one group separated by a fraction bar); +- D20 b) the service indications (if any); +- D21 c) the name of the addressee; +- D22 d) the address (excluding the office of destination); +- D23 e) the signature (if any). +- D24 3.2.2.2 The service advice should, as far as practicable, be forwarded on the same route as the original telegram. Transit offices may add their own serial number to the references given. + +###### **3.2.3 Return service advices** + +- D25 3.2.3.1 A return service advice is a notification or an enquiry (request service advice) initiated by the office receiving a telegram or a reply (reply service advice) to a service advice received. +- D26 3.2.3.2 Return service advices (except reply service advices, see D30) shall quote as references the following particulars of the original telegram: +- D27 a) all the serial numbers shown in the numbering line together with the date (the number(s) and date in one group separated by a fraction bar); +- D28 b) service indications (if any); +- D29 c) the name of the addressee. +- D30 3.2.3.3 In reply service advices, the reference numbers and the date should be those of the request service advice followed by a space and the references of the subject telegram given in the request service advice. +- D31 3.2.3.4 Return service advices shall be addressed to the office of origin of the subject telegram or the request service advice. +- D32 3.2.3.5 Any transit office that can, without inconvenience or delay, collect the information needed for acting on the service advice shall do so; otherwise, it shall send the service advice on to its destination. + +##### **3.3 Wording** + +- D33 3.3.1 Service advices must contain in the preamble line the name of the office of origin, the number of actual words and the date and time of issue (see D41). +- D34 3.3.1.1 Offices may add to the name of the office of origin the name, in abbreviated form, of the branch issuing the service advice. +- D35 3.3.1.2 The address part of a service advice shall include the service indication **A** and the name of the office of destination with, if necessary, the additions mentioned in D34 if any (see D42). +- D36 3.3.2 The text of a service advice shall quote all particulars necessary to facilitate the tracing of the subject telegram in accordance with D18 to D23 and D25 to D30. +- D37 3.3.3 Service advices shall preferably make use of the codes listed in the ITU Operational Bulletin (for general use) or in C101 (mainly for gentex operation). Additional codes may be used by bilateral agreement. +- D38 3.3.4 Examples of format and wording of service advices are shown in D41 to D45. + +###### **3.4 Repetition of a telegram** + +- D39 3.4.1 Where a repetition of an individual telegram is required by an office using the special provisions for the telegram retransmission system, the request shall be included in a service advice to the office sending the series (or the office of origin, if appropriate). The repetition should be included in the text of a reply service advice deleting any start-of-message and end-of-message signals on the subject telegram. + +#### III. Examples of format and wording of service correspondence + +D40 Service telegram (see D12 and D13) + +← ≡ + +**ZCZC ALI402 SVC711** ← ≡ + +**PCSV CN HXSV 000** ← ≡ + +**HONGKONG x 6 0838** ← ≡ ≡ ≡ + +**A** ← ≡ + +**INOCRAM** ← ≡ ≡ ≡ + +**LISBON** ← ≡ ≡ ≡ + +**text** ← ≡ + +**signature** ← ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ + +NNNN (ten letter-shifts) + +D41 Service advice (see D33) + +← ≡ + +**ZCZC GHA444 SVC529** ← ≡ + +**GBBM CN HXSV 000** ← ≡ + +**HONGKONG x 6 0840** ← ≡ ≡ ≡ + +**A** ← ≡ + +**BIRMINGHAM** ← ≡ ≡ ≡ + +**text** ← ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ + +NNNN (ten letter-shifts) + +D42 Service advice (see D34 and D35) + +← ≡ + +**ZCZC LBA123 SG42** ← ≡ + +**INBY CN GBLB 000** ← ≡ + +**LONDON/MRC x 4 1030** ← ≡ ≡ ≡ + +**A** ← ≡ + +**BOMBAY** ← ≡ ≡ ≡ + +**text** ← ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ + +NNNN (ten letter-shifts) + +x indicates number of actual words. + +D43 Advice of non-delivery (see A191) + +← ≡ + +**ZCZC ASV632 LHZ221 QLH53** ← ≡ + +**GJBA CN GBLH 000** ← ≡ + +**LONDON/LH 7 19 1841** ← ≡ ≡ ≡ + +**A** ← ≡ + +**BAHRAIN** ← ≡ ≡ ≡ + +**ZLH082/VSA197/COF5259/19TH JOHNSTON ← ≡** +**14/A VICTORIASTREET RUCOS ←** + +NNNN (ten letter-shifts) + +D44 Correction of address (see A194) + +← ≡ + +**ZCZC ZLH971 VSA197 LD39 ← ≡** + +**GBLH CN GJBA 000 ← ≡** + +**BAHRAIN 8 20 1005 ←** + +**A ← ≡** + +**LONDON/LH ←** + +**ASV632/LHZ221/QLH53/19TH ZLH082/VSA197/COF5259/19TH ← ≡** +**JOHNSTON JEHAT 144/A VICTORIASTREET ←** + +NNNN (ten letter-shifts) + +D45 Non-delivery problem solved (see A198) + +← ≡ + +**ZCZC HGA456 LDC222 QLD12 ← ≡** + +**HXSV CN GBLD 000 ← ≡** + +**LONDON/LD 5 19 1145 ←** + +**A ← ≡** + +**HONGKONG ←** + +**CLD234/GHB197/CA2653/18TH SCHMIDT PYSAT ←** + +NNNN (ten letter-shifts) + +### DIVISION E + +### OPERATIONAL PROVISIONS APPLYING TO INTERNATIONAL FACSIMILE TRANSMISSIONS OF TELEGRAMS + +#### 1 General provisions + +- E1 1.1 This division complements the general and service provisions for the International Public Telegram Service in Divisions A and D. It defines the recommended arrangements where facsimile transmission links, rather than printing telegraph systems (Division C) or Morse and sounder working (Division B), are used to carry telegrams internationally. +- E2 1.2 In order to meet the specific possible conditions applying to international facsimile transmission of telegrams, for the purposes of this Recommendation, the term *telegram* should be considered as being a message: +- that is, in principle, word-based (see A115 to A132); + - that would normally be capable of being character-coded in accordance with A15 to A22. +- E3 1.3 On the international path a distinction is made between the international bureaufax and telegrams services. In this Division, rather than facsimile providing specific service features perceived by the user (as in bureaufax), it is merely the technical means of transmission of a telegram on part or all of the international path6. + +#### 2 Preparation of telegrams for transmission + +- E4 2.1 In principle, the provisions in A12 to A132 apply relating to the preparation and handing in of telegrams and to the counting of words, but the provisions and variations in E5 to E11 below apply where bilaterally agreed. +- E5 2.2 The telegram shall contain: +- a heading (A27 to A38); + - an address part (A39 to A100); and + - a text part (A101 to A104). +- E6 2.3 The arrangements of these parts (and hence their order of transmission by facsimile) may vary, depending for example on the structure of the forms for accepting telegrams in the origin country. However, this arrangement should facilitate delivery at the destination and provide a clear presentation to the addressee. +- E7 2.4 A facsimile transmittal sheet, as defined in Recommendation F.170, may be used. +- E8 2.5 Where the form accepted from the originator is transmitted internationally by facsimile, the general provisions in Recommendation F.170 (clause 2/F.170) should be applied, regarding page, size, margins, contrast, adequate definition and colours or + +--- + +6 Nevertheless, the bureaufax and telegram services for serve similar market needs. Hence, as noted in Recommendation F.18, harmonization of the bureaufax and telegram services has a number of advantages. However, the methods and degrees of harmonization depend to a large extent on national implementation which is a matter for the ROAs and/or service providers concerned. (See Recommendation F.170 regarding the operational aspects of the intentional bureaufax service.) + +half-tones in the original. it is the sending office's responsibility to ensure that these conditions are met to enable a clear black and white reproduction on reception. + +E9 2.6 Where these conditions are not met, the telegram should be refused. The bureaufax service instruction **RE** (*risques expediteur or sender's risk*) should not be used in the telegram service. + +E10 2.7 Where the end-to-end transmission is by facsimile, the contents of a telegram may also contain graphic or other characters outside the normal character set of telegrams (A15 to A22). In cases of end-to-end transmission by facsimile, special bilateral agreements may apply to harmonize the treatment of such telegrams for word-counting and related purposes. + +E11 2.8 The provisions relating to long telegrams (A105 to A113) may be waived. + +#### 3 **Routing and retransmission of telegrams** + +E12 3.1 While A133, A133A and A135 apply, it should be noted that the choice of international transmission mode is not necessarily the same in each direction. For example, in any international relation it may be agreed that the facsimile be used in one direction and printing telegraph in the other. + +E13 3.2 Appropriate steps should be taken to provide reasonable protection against the loss, corruption or excessive delay of telegrams transmitted internationally by facsimile. + +#### 4 **Delivery at destination** + +E14 4.1 The delivery of telegrams at destination should be generally in accordance with A172 to A200, noting the possible operational difficulties in providing telex (**TLXx**) delivery of telegrams received by facsimile. + +E15 4.2 However, where bilaterally agreed, the bureaufax service provisions (clause 6/F.170) may be applied for the delivery at destination of telegrams transmitted internationally by facsimile. + +#### 5 **Service correspondence** + +E16 5.1 Division D lays down the provisions concerning service correspondence in the international public telegram service. + +E17 5.2 Provided the provisions on reciprocal arrangements in Recommendation F.17 are respected, the bureaufax service (clause 7/F.170) may be used to handle service correspondence. + +#### 6 **Archives** + +E18 6.1 While A266 normally requires retention of copies of telegrams for six months, this period may be reduced to [four] weeks (from the date of handing in) for telegrams accepted or transmitted by facsimile. + +E19 6.2 Along the lines indicated in clause 7/F.170 for the bureaufax service, the individual service providers concerned may agree on suitable arrangements other than those in A166 to A273 and E18 to answer any queries subsequent to the transmission of a telegram by facsimile, in particular any queries affecting the international accounts. + +## **Bibliography** + +- [1] International Telecommunication Convention, Nairobi, 1982. +- [2] List of telegraph offices open for international service, ITU, Geneva. +- [3] List of coast stations, List IV, Part IV, Volume I, ITU, Geneva. +- [4] General Information relating to the Operation of the International Telegraph, Data Transmission and Telematic Services, (facsimile, teletex, videotex, etc.) ITU, Geneva. +- [5] Codes and abbreviations for the use of the international telecommunication services, ITU, Geneva. +- [6] Routing table for offices taking part in the gentex service, ITU, Geneva. +- [7] List of indicators for the telegram retransmission system and telex network identification codes, ITU, Geneva. + +# ITU-T RECOMMENDATIONS SERIES + +| | | +|-----------------|--------------------------------------------------------------------------------------------------------------------------------| +| Series A | Organization of the work of the ITU-T | +| Series B | Means of expression: definitions, symbols, classification | +| Series C | General telecommunication statistics | +| Series D | General tariff principles | +| Series E | Overall network operation, telephone service, service operation and human factors | +| Series F | Non-telephone telecommunication services | +| Series G | Transmission systems and media, digital systems and networks | +| Series H | Audiovisual and multimedia systems | +| Series I | Integrated services digital network | +| Series J | Transmission of television, sound programme and other multimedia signals | +| Series K | Protection against interference | +| Series L | Construction, installation and protection of cables and other elements of outside plant | +| Series M | TMN and network maintenance: international transmission systems, telephone circuits, telegraphy, facsimile and leased circuits | +| Series N | Maintenance: international sound programme and television transmission circuits | +| Series O | Specifications of measuring equipment | +| Series P | Telephone transmission quality, telephone installations, local line networks | +| Series Q | Switching and signalling | +| Series R | Telegraph transmission | +| Series S | Telegraph services terminal equipment | +| Series T | Terminals for telematic services | +| Series U | Telegraph switching | +| Series V | Data communication over the telephone network | +| Series X | Data networks and open system communications | +| Series Y | Global information infrastructure | +| Series Z | Programming languages | \ No newline at end of file diff --git a/marked/F/T-REC-F.110-199607-I_PDF-E/raw.md b/marked/F/T-REC-F.110-199607-I_PDF-E/raw.md new file mode 100644 index 0000000000000000000000000000000000000000..2a758b4458eea5b8838e4bd436557753fece5756 --- /dev/null +++ b/marked/F/T-REC-F.110-199607-I_PDF-E/raw.md @@ -0,0 +1,952 @@ + + +![ITU logo](2dfa6ac3edfe874f68aa0cbccaa42322_img.jpg) + +The logo of the International Telecommunication Union (ITU) features a globe with a lightning bolt striking across it, symbolizing global communication. + +ITU logo + +INTERNATIONAL TELECOMMUNICATION UNION + +**ITU-T** + +TELECOMMUNICATION +STANDARDIZATION SECTOR +OF ITU + +**F.110** + +(07/96) + +SERIES F: NON-TELEPHONE TELECOMMUNICATION +SERVICES + +Mobile service – Mobile services and multdestination +satellite services + +--- + +**Operational provision for the maritime mobile +service** + +ITU-T Recommendation F.110 + +(Previously “CCITT Recommendation”) + +--- + +# FOREWORD + +The ITU-T (Telecommunication Standardization Sector) is a permanent organ of the International Telecommunication Union (ITU). The ITU-T is responsible for studying technical, operating and tariff questions and issuing Recommendations on them with a view to standardizing telecommunications on a worldwide basis. + +The World Telecommunication Standardization Conference (WTSC), which meets every four years, establishes the topics for study by the ITU-T Study Groups which, in their turn, produce Recommendations on these topics. + +The approval of Recommendations by the Members of the ITU-T is covered by the procedure laid down in WTSC Resolution No. 1 (Helsinki, March 1-12, 1993). + +ITU-T Recommendation F.110 was revised by ITU-T Study Group 1 (1993-1996) and was approved under the WTSC Resolution No. 1 procedure on the 19th of July 1996. + +--- + +# NOTE + +In this Recommendation, the expression “Administration” is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. + +© ITU 1996 + +All rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the ITU. + +# CONTENTS + +| | Page | +|------------------------------------------------------------------------------------------------------------------------------------------------|-------------| +| DIVISION A – GENERAL..... | 1 | +| 1 Scope..... | 1 | +| 2 References..... | 1 | +| 3 Definitions..... | 2 | +| 4 Order of priority ..... | 2 | +| 5 Limitations ..... | 3 | +| 6 Service hours ..... | 3 | +| DIVISION B – RADIOTELEGRAMS ..... | 4 | +| 1 Preparation and handing-in of radiotelegrams ..... | 4 | +| 1.1 Indication of station of origin ..... | 4 | +| 1.2 Use of accounting authority identification codes by mobile stations ..... | 4 | +| 1.3 Time of handing-in ..... | 4 | +| 1.4 Address ..... | 4 | +| 2 Counting of words..... | 5 | +| 3 Routing of radiotelegrams..... | 5 | +| 4 Transmission of radiotelegrams ..... | 5 | +| 4.1 Routine repetition ..... | 5 | +| 4.2 Doubtful reception ..... | 6 | +| 4.3 Long distance radiocommunications ..... | 6 | +| 4.4 Routine retransmission by mobile stations ..... | 7 | +| 4.5 Period of retention of radiotelegrams at land stations..... | 7 | +| 5 Advice of non-delivery ..... | 8 | +| 6 Radiomarine letters ..... | 8 | +| 7 Special services ..... | 8 | +| 8 Special conditions relating to the maritime mobile-satellite service..... | 8 | +| DIVISION C – RADIOTELEX ..... | 9 | +| 1 General..... | 9 | +| 1.1 Routing of calls..... | 9 | +| 1.2 Information to be supplied, as necessary by the calling party ..... | 9 | +| 1.3 Call duration ..... | 9 | +| 1.4 Validity of requests..... | 10 | +| 1.5 Exchange of radiotelegrams by radiotelex..... | 10 | +| 2 Traffic from mobile stations to subscribers of the international telex service ..... | 10 | +| 2.1 Automatic operation ..... | 10 | +| 2.2 Single-operator operation ..... | 10 | +| 2.3 Semi-automatic operation ..... | 10 | +| 2.4 Manual operation..... | 10 | +| 2.5 Store-and-forward service ..... | 10 | +| 2.6 Operational procedures..... | 11 | +| 3 Traffic from subscribers of the international telex service-to-mobile stations..... | 11 | +| 3.1 Fully automatic operation ..... | 11 | +| 3.2 Single-operator operation (direct access by a calling telex subscriber to a foreign land station) ..... | 11 | +| 3.3 Semi-automatic operation (access by a calling subscriber to one's international centre for the establishment of a direct connection) ..... | 12 | +| 3.4 Manual operation..... | 12 | +| 3.5 Store-and-forward..... | 12 | + +| | Page | | +|------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------|----| +| 4 | Traffic exchanged between mobile stations ..... | 13 | +| 5 | Radiomaritime telex letter ..... | 13 | +| 5.1 | Definition ..... | 13 | +| 5.2 | Operational procedures ..... | 13 | +| 6 | Special provisions for the maritime mobile-satellite telex service ..... | 13 | +| 6.1 | Procedures for calls from subscribers of the international telex service to a mobile earth station ... | 13 | +| 6.2 | Procedures for calls from MES to subscribers of the international telex service ..... | 13 | +| 6.3 | Procedures for MES-to-MES calls ..... | 14 | +| 6.4 | Instructions for maritime mobile-satellite telex service ..... | 14 | +| DIVISION D – RADIOTELEPHONE ..... | | 15 | +| 1 | General ..... | 15 | +| 1.1 | Language to be used ..... | 15 | +| 1.2 | Priority ..... | 15 | +| 1.3 | Routing of calls ..... | 15 | +| 1.4 | Information to be supplied, as necessary, by the calling party ..... | 15 | +| 1.5 | Call duration ..... | 16 | +| 1.6 | Validity of requests ..... | 16 | +| 1.7 | Exchange of radiotelegrams by radiotelephony ..... | 16 | +| 2 | Traffic from mobile stations to telephone subscribers ..... | 16 | +| 2.1 | Automatic operation ..... | 16 | +| 2.2 | Single-operator operation ..... | 16 | +| 2.3 | Semi-automatic operation ..... | 17 | +| 2.4 | Manual operation ..... | 17 | +| 2.5 | Operational procedures ..... | 17 | +| 3 | Traffic from telephone subscribers to mobile stations ..... | 17 | +| 3.1 | Fully automatic operation ..... | 17 | +| 3.2 | Single-operator operation (direct access by a calling subscriber to a foreign land station) ..... | 17 | +| 3.3 | Semi-automatic procedure (access by a calling subscriber to one's international centre for the establishment of a direct connection) ..... | 18 | +| 3.4 | Manual operation ..... | 18 | +| 4 | Traffic exchanged between mobile stations ..... | 19 | +| 5 | Special provisions for the maritime mobile-satellite telephone service ..... | 19 | +| 5.1 | Procedures for calls from subscribers of a terrestrial telephone network to a mobile earth station .. | 19 | +| 5.2 | Procedures for calls from MES to subscribers of the terrestrial telephone networks ..... | 19 | +| 5.3 | Procedures for MES-to-MES calls ..... | 20 | +| 5.4 | Instruction for maritime mobile-satellite telephone service ..... | 20 | +| DIVISION E – RADIOTELEXOGRAM ..... | | 21 | +| 1 | General ..... | 21 | +| 1.1 | Definition ..... | 21 | +| 1.2 | Provision of service ..... | 21 | +| 1.3 | Validity of requests ..... | 21 | +| 2 | Operational procedures ..... | 21 | +| Bibliography ..... | | 22 | + +# **OPERATIONAL PROVISION FOR THE MARITIME MOBILE SERVICE** + +*(revised in 1996)* + +## **DIVISION A – GENERAL** + +### **1 Scope** + +**A1 1.1** This Recommendation provides for all aspects of operation of the radiotelegram service, the radiotelex service, the radiotelephone service and the radiotelexogram service in terms of both communications via maritime mobile satellite, and radio media of HF, MF, VHF and UHF1). + +### **2 References** + +**A2 2.1** The following Recommendations and other references contain provisions which, through reference in this text, constitute provisions of this Recommendation. At the time of publication, the editions indicated were valid. All Recommendations and other references are subject to revision: all users of this Recommendation are therefore encouraged to investigate the possibility of applying the most recent edition of the Recommendations and other references listed below. A list of the currently valid ITU-T Recommendations is regularly published. + +- CCITT Recommendation E.105 (1992), *International telephone service*. +- ITU-T Recommendation E.141 (1993), *Instructions for the international telephone service*. +- CCITT Recommendation E.164 (1991), *Numbering plan for the ISDN era*. +- CCITT Recommendation F.1 (1992), *Operational provisions for the international public telegram service*. +- CCITT Recommendation F.17 (1992), *Operational aspects of service communications*. +- CCITT Recommendation F.60 (1992), *Operational provisions for the international telex service*. +- ITU-T Recommendation F.69 (1994), *The international telex service – Service and operational provisions of telex destination codes and telex network identification codes*. +- ITU-T Recommendation F.72 (1993), *The international telex service – General principles and operational aspects of a store and forward facility*. +- CCITT Recommendation F.111 (1991), *Principles of service for mobile systems*. +- CCITT Recommendation F.120 (1988), *Ship station identification for VHF/UHF and maritime mobile-satellite services*. +- ITU-T Recommendation D.90 (1995), *Charging, billing, international accounting and settlement in the maritime mobile service*. + +--- + +1) This Recommendation constitutes part of a *Manual for Use by the Maritime Mobile and Maritime Mobile-Satellite Services* defined in *Radio Regulations*. + +### 3 Definitions + +- A3 3.1 For the purposes of this CCITT Recommendation, the following terms have the meanings defined below: +- A4 3.1.1 **controlling operator:** The controlling operator is the first land-based operator handling the radiotelegram, radiotelex call or radiotelephone call in the direction from the mobile station. +- A5 3.1.2 **accounting authority identification code:** An accounting authority identification code is assigned to each accounting authority (defined in the *International Telecommunication Regulations* [1]). In effect the accounting authority acts as a billing intermediary between mobile stations and ROAs. +- A6 3.1.3 **recognized operating agency (ROA):** The term is defined in *the International Telecommunication Constitution* (Geneva, 1992) [2]. For the purpose of this CCITT Recommendation an ROA is, in effect, any individual, company, corporation or governmental agency that operates an international telecommunication service to carry public correspondence (as defined in the Constitution). Each ROA is authorized by an ITU Member, which imposes certain obligations on the ROA. (For further details, see the *Constitution*.) +- A7 3.1.4 **land stations:** A station in the mobile service not intended to be used while in motion. +- A8 3.1.5 **land earth station:** An earth station in the mobile-satellite service located at a specified fixed point or within a specified inland area to provide a feeder link for the mobile-satellite service. +- A9 3.1.6 **mobile stations:** A station in the mobile service intended to be used while in motion or during halts at an unspecified point. +- A10 3.1.7 **mobile earth station:** An earth station in the mobile-satellite service intended to be used while in motion or during halts at unspecified points. +- A11 3.1.8 The term *land station/land earth station* and *mobile station/mobile earth station* should imply *coast station/coast earth station* and *ship station/ship earth station*, respectively used in the *Radio Regulations* [3]. +- A12 3.1.9 **ship station identity:** Ship's identification $X_1, X_2 \dots X_n$ identifying the ship uniquely. The ship station identity may be transmitted on the radio path. +- A13 3.1.10 **coast station identity:** The coast station identification $X_1, X_2 \dots X_n$ transmitted on the radio path. +- A14 3.1.11 **mobile station number:** The number that identifies a mobile station for access from a public network and forms part of the international number to be dialled or keyed by a public network subscriber. + +### 4 Order of priority + +- A15 4.1 The order of priority for communications in the maritime mobile service shall be as follows, except where impracticable in a fully automated system in which, nevertheless, communications described in A16 shall receive priority: +- A16 a) distress calls, distress messages and distress traffic; +- A17 b) communications preceded by the urgency signal; + +- A18 c) communications preceded by the safety signal; +- A19 d) communications relating to radio direction-finding; +- A20 e) communications relating to the navigation and safe movement of aircraft engaged in search and rescue operations; +- A21 f) communications relating to the navigation, movements and need of ships, aircraft and weather observations messages destined for an official meteorological service; +- A22 g) radiotelegrams relative to the application of the United Nations Charter (**ETATPRIORITE**); +- A23 h) government radiotelegrams with priority (**ETATPRIORITE**) and government calls for which priority has been expressly requested; +- A24 i) ordinary private radiotelegrams and **RCT** radiotelegrams for which urgent transmission and delivery has been requested; +- A25 j) service communications relating to the operation2) of the telecommunication service or to communications previously exchanged; +- A26 k) government communications other than those shown in A29 ordinary private communications and **RCT** radiotelegrams; +- A27 l) radiomaritime letters. + +### 5 Limitations + +- A28 5.1 The duration of distress calls is not limited. +- A29 5.2 Except in the automatic operation, the duration of private communications, and of government communications as the case may be, may be limited under certain circumstances (e.g. congestion or fault conditions). The ROAs concerned may agree to limit the duration of these communications. +- A30 5.3 If the duration of services is limited, the caller shall be informed when calls are about to be connected, that it will be cut off after due time. + +### 6 Service hours + +- A31 6.1 While the services of most land stations are continuous, certain land stations may have a service of limited duration. It is recommended, therefore, to refer to the *List of Coast Stations* [4]. +- A32 6.2 The working hours of a mobile station in the maritime mobile service are dependent on the categories of ship stations as defined in the Radio Regulations. It is recommended to refer to the *List of Ship Stations* [5] as appropriate. + +--- + +2) For the operational aspects of service telecommunications, see Recommendation F.17, which describes basic principles, acceptable content for service telecommunications and the principle of reciprocity regarding both service providers and services. More detailed provisions for specific telecommunication services may be found in Recommendations F.105, F.1 and F.60. + +## DIVISION B – RADIOTELEGRAMS + +### 1 Preparation and handing-in of radiotelegrams + +#### 1.1 Indication of station of origin + +- B1 1.1.1 When, because of duplication of names, the name of a station is followed by its call sign/ship station identity, the latter shall be joined to the name of the station by a fraction bar. + +Examples3): **OREGON/OZOC** (not **OREGONOZOC**); + +**ROSE/DDOR** (not **ROSEDDOR**). + +- B2 1.1.2 When a land station retransmits a radiotelegram received from a mobile station, it shall transmit, as office of origin, the name of the mobile station in which the radiotelegram originated as this name appears in the *List of Ship Stations* [5], followed by its own name. Where appropriate, B1 shall also apply. +- B3 1.1.3 In order to avoid any confusion with a telegraph office or a fixed station of the same name, the land station may, if desirable, complete the indication of the name of the mobile station of origin by the word **SHIP** or **AIRCRAFT**, placed before the station of origin. + +#### 1.2 Use of accounting authority identification codes by mobile stations + +- B4 1.2.1 The mobile station operator should, as a standard operating procedure, give the Accounting Authority Identification Code (AAIC) at the end of the preamble line. If the AAIC is missing, the land station operator should request **QRC**. + +#### 1.3 Time of handing-in + +- B5 1.3.1 In the transmission of radiotelegrams originating in a mobile station, the date and time of handing-in at this station are given by two groups of figures in the preamble line, the first indicating the day of the month (1 to 31) and the second consisting of a group of figures (0001 to 2400) indicating the hours and the minutes. +- B6 1.3.2 The time of handing-in is indicated in Coordinated Universal Time (UTC). + +NOTE – For practical operating purposes, UTC may be considered as equivalent to Greenwich Mean Time (GMT). + +#### 1.4 Address + +- B7 1.4.1 The address of radiotelegrams destined for mobile stations should be as complete as possible and must include: +- B8 a) the name or the designation of the addressee, with supplementary particulars, if necessary; +- B9 b) the name of the mobile station followed, when necessary, by its call sign/ship station identity, the latter joined by a fraction bar to the name of the station as shown in the *List of Ship Stations* [5]; +- B10 c) the name of the land station through which the radiotelegram is to be forwarded, as it appears in the *List of Coast Stations* [4]. +- B11 1.4.2 If the mobile station does not appear in the *List of Ship Stations* [5], the sender should, if possible, indicate the nationality and route followed by the mobile station. + +--- + +3) In the provision regarding the non-voice services, letters, figures and signs that are transmitted electrically are shown in bold font. + +**B12**    **1.4.3**    However, the name and call sign/ship station identity required under B10 may be replaced, at the risk of the sender, by particulars of the passage made by such a mobile station, indicated by the names of the ports or airports of departure and of destination, or by any equivalent indication. + +**B13**    **1.4.4**    Mobile stations may add to the name of the office of destination: + +- the name of the territorial subdivision; and/or +- the destination country, + +if it is doubtful whether, without such addition, the radiotelegram could be correctly routed without difficulty. + +**B14**    **1.4.5**    The controlling operator retains or deletes the particulars in B13 or further amends the name of the office of destination as is necessary or sufficient for forwarding the radiotelegram to its proper destination. + +### **2 Counting of words** + +**B15**    **2.1**    The word count of the office of origin is decisive in the case of radiotelegrams destined for mobile stations, and that of the controlling operator is decisive in the case of radiotelegrams originating in mobile stations. + +**B16**    **2.2**    If two land stations participate in the handling of a radiotelegram, the decision of the controlling operator accepting the radiotelegram from the originating mobile station will prevail and will be valid for international accounting. + +### **3 Routing of radiotelegrams** + +**B17**    **3.1**    Radiotelegrams, originating in or destined to a mobile station should be routed via the land station that is considered most suitable in relation to the mobile station concerned in terms of the coverage and of the land station and radio conditions. + +**B18**    **3.2**    However, to expedite or to facilitate the routing of radiotelegrams to a land station, a mobile station may transmit them to another mobile station. The latter shall dispose of such radiotelegrams in the same manner as if they originated with itself (see B39 to B42). + +**B19**    **3.3**    If the sender of a radiotelegram handed in at a mobile station has indicated the land station to which the radiotelegram be sent, the mobile station shall, in order to effect this transmission to the land station indicated, wait, if necessary until the conditions specified in B17 and B18 are fulfilled. + +**B20**    **3.4**    In order to facilitate disposal of traffic, and subject to such conditions as individual ROAs may apply, land stations may, in exceptional circumstances and with discretion, without incurring additional charges, exchange radiotelegrams and service telegrams relating thereto. + +### **4 Transmission of radiotelegrams** + +#### **4.1 Routine repetition** + +**B21A**    **4.1.1**    Routine repetition means the repetition of isolated figures and mixed groups containing figures in the address and text parts. Any such repetition should be given after the text part and be preceded by the code **COL**. + +**B21B**    **4.1.2**    In view of CCITT Recommendation F.1 (A103) routine repetition may be used between land station and mobile station at the discretion of the sending station where the transmission conditions warrant it. + +**B21C**    **4.1.3**    Where a mobile station gives a routine repetition, the land station shall use the repeated groups to check the received address and text parts, but should not retransmit the routine repetition. + +#### 4.2 Doubtful reception + +B22 4.2.1 In the mobile service, when communication becomes difficult, the two stations in communication should make every effort to complete the radiotelegram in course of transmission. The receiving station may request not more than two repetitions of a radiotelegram of which the reception is doubtful. + +B23 4.2.2 If this triple transmission is ineffective, the radiotelegram is kept on hand in case a favourable opportunity for completing its transmission occurs. + +B24 4.2.3 If the transmitting station considers that it will not be possible to re-establish communications with the receiving station within twenty-four hours, it proceeds as follows: + +B25 4.2.4 If the transmitting station is a mobile station, it immediately informs the sender of the reason for the non-transmission of his radiotelegram. The sender may then request: + +B26 a) that the radiotelegram be transmitted through another land station or through other mobile stations; or + +B27 b) that the radiotelegram be held until it can be transmitted without additional charge; or + +B28 c) that the radiotelegram be cancelled. + +B29 4.2.5 If the transmitting station is a land station, it applies the provision of B43 to B52 to the radiotelegram. + +B30 4.2.6 When a mobile station subsequently transmits a radiotelegram thus held to the land station that incompletely received it, this new transmission must bear the service instruction **AMPLIATION** at the end of the preamble line of the radiotelegram. + +B31 4.2.7 However, if the radiotelegram is transmitted to another land station operated by the same ROA, the new transmission must bear, at the end of the preamble line, the service instruction **AMPLIATION VIA ...** (insert here the call sign/coast station identity of the land station to which the radiotelegram was transmitted in the first instance) and the ROA in question may claim only the charges relating to a single transmission. + +B32 4.2.8 The other land station, which thus forwards the radiotelegram, may claim from the mobile station of origin any additional charges resulting from the transmission of the radiotelegram between itself and the office of destination. + +B33 4.2.9 When the land station designated in the address as the station by which the radiotelegram is to be forwarded cannot reach the destination mobile station and has reason to believe that such mobile station is within the service area of another land station of the ROA by which it is operated, it may, if no additional charge is incurred thereby, forward the radiotelegram to this other land station. + +B34 4.2.10 A station of the mobile service that has received a radiotelegram and has been unable to acknowledge its receipt in the usual way must take the first favourable opportunity to give such acknowledgement. + +B35 4.2.11 When the acknowledgement of receipt of a radiotelegram transmitted between mobile station and land station cannot be given directly, it is forwarded through another mobile or land station by service advice (see Recommendation F.1, Division D) if the latter is able to communicate with the station that has transmitted the radiotelegram in question. In any case, no additional charge shall result. + +#### 4.3 Long distance radiocommunications + +B36 4.3.1 An ROA may organize a long-distance radiocommunication service between land station and mobile stations, with deferred acknowledgement of receipt or without any acknowledgement of receipt. + +B37 4.3.2 Each ROA designates the land station or stations participating in the long-distance radio service. An indication to this effect shall appear in the *List of Coast Stations* [4]. + +B38 4.3.3 When there is doubt about the accuracy of any part of a radiotelegram transmitted under either of the systems mentioned in B36, the indication doubtful reception is entered on the copy delivered to the addressee, and the doubtful words or groups of words are underlined. If words are missing, blanks are left in the places where these words should be. + +#### 4.4 Routine retransmission by mobile stations + +B39 4.4.1 When a land station cannot reach the mobile station for which a radiotelegram is destined, the land station may, in order to forward the radiotelegram to its destination, have recourse to the help of another mobile station provided that the latter consents. The radiotelegram is then transmitted to this other mobile station. The help of the latter is given free of charge. + +B40 4.4.2 The same provision is also applicable to traffic from mobile stations to land stations, when necessary. + +B41 4.4.3 The station assisting in the free retransmission in accordance with B39 and B40 must enter the service abbreviation **QSP** ... (name or call sign/ship station identity of the mobile station) at the end of the preamble line of the radiotelegram. + +B42 4.4.4 In order that a radiotelegram thus forwarded may be considered as having reached its destination, the station that has made use of this indirect route must have obtained the regular acknowledgement of receipt, either direct or by an indirect route, from the mobile station for which the radiotelegram was destined or from the land station to which it was to be forwarded, as the case may be. + +#### 4.5 Period of retention of radiotelegrams at land stations + +B43 4.5.1 When it has not been possible for a land station to transmit a radiotelegram to a mobile station by the morning of the fifth day (not including the day of handing-in), the land station treats the radiotelegram as undelivered and notifies the office of origin accordingly. + +B44 4.5.2 The sender of a radiotelegram destined for a mobile station may specify the number of days during which the land station may hold the radiotelegram. In that case, the service indication **Jx** (x days), specifying the number of days (ten at the most) exclusive of the day of handing-in of the radiotelegram, shall be shown before the address. When it has not been possible for a land station to transmit a radiotelegram bearing the service indication **Jx** within the prescribed period, the land station treats the radiotelegram as undelivered and informs the office of origin accordingly. + +B45 4.5.3 The periods mentioned in B43 and B44 shall be ignored if the land station is sure that the mobile station will soon come within its service area. + +B46 4.5.4 On the other hand, the lapse of those periods is not awaited when the land station is sure that the mobile station, being in course of a voyage, either has definitely left its service area or will not enter it. + +B47 4.5.5 If there is reason to believe that no other land station of the ROA by which it is operated is or will be in touch with it, the land station cancels the radiotelegram as far as concerns the section between itself and the mobile station and informs the office of origin, which notifies the sender. + +B48 4.5.6 In the contrary case, the land station forwards the radiotelegram to the land station believed to be in touch with the mobile station, provided, however, that no additional charge results therefrom. + +B49 4.5.7 The land station that carries out the redirection alters the address of the radiotelegram by placing after the name of the mobile station that of the new land station charged with the transmission and adding at the end of the preamble line the service instruction **REDIRECTED FROM ... RADIO**, which must be transmitted throughout the course of the radiotelegram. + +B50 4.5.8 If, within the limits of the requisite period of retention of radiotelegrams, the land station that has redirected a radiotelegram to another land station is subsequently in a position to transmit the radiotelegram direct to the destination mobile station, it does so by inserting the service instruction **AMPLIATION** at the end of the preamble line. + +B51 4.5.9 It shall then transmit to the land station to which the radiotelegram had been redirected a service advice informing the latter of the transmission of the said radiotelegram. + +B52 4.5.10 When a radiotelegram cannot be transmitted to a mobile station owing to the arrival of the latter in a port near the land station, the latter station may, according to circumstances, forward the radiotelegram to the mobile station by other means of communication, at the same time informing the office of origin by service advice of the delivery. + +### 5 Advice of non-delivery + +- B53 5.1** When, for any reason, a radiotelegram originating in a mobile station and destined for a place on land cannot be delivered to the addressee, a service advice of non-delivery is addressed to the land station or the telegraph office that received the radiotelegram. +- B54 5.2** After checking the address, the land station forwards the service advice, when possible, to the mobile station, if necessary by way of another land station of the same country or of a neighbouring country, as far as existing conditions or special agreements permit. +- B55 5.3** When a radiotelegram received at a mobile station cannot be delivered, that station so informs the office or mobile station of origin by a service advice. +- B56 5.4** In the case of a radiotelegram originating on land, this service advice is sent, whenever possible, to the land station through which the radiotelegram passed, or, if necessary, to another land station of the same country or of a neighbouring country, as far as existing conditions or special arrangements permit. +- B57 5.5** In such cases the name or call sign/ship station identity of the station from which the radiotelegram was received is quoted. + +### 6 Radiomaritime letters + +- B58 6.1** An ROA may organize a service of radiomaritime letters between mobile stations and its land stations. +- B59 6.2** Such correspondence is transmitted by radio between mobile and land stations. +- B60 6.3** They may be forwarded on the land section: +- B61 a)** wholly or partly by post (ordinary or airmail); +- B62 b)** exceptionally by telefax or other electronic means, but with low priority. +- B63 6.4** Routine retransmission by mobile stations of radiomaritime letters is not permitted. +- B64 6.5** Radiomaritime letters shall be addressed only to places in the country in which the land station is situated, unless the *List of Coast Stations* [4] indicates that the station concerned will accept such traffic for onward transmission by post to places in other countries. +- B65 6.6** Radiomaritime letters bear the service indication **SLT**. This indication precedes the address. +- B66 6.7** Except as otherwise provided in B58 to B68, radiomaritime letters may be accepted, taking into account ITU-T CCITT Recommendations relating to letter telegrams if the telegram service is used to convey radiomaritime letters. +- B67 6.8** The address must enable delivery to be effected without enquiry or requests for information. Registered or abbreviated code addresses may be accepted where B62 above applies, exceptionally, radiomaritime letters are forwarded by means of telegram on the land section. +- B68 6.9** Radiomaritime letters rank, for radio transmission, after ordinary radiotelegrams on hand. Those that have not been transmitted within 24 hours of handing-in are sent concurrently with ordinary radiotelegrams. + +### 7 Special services + +- B69 7.1** Telegrams with special services of urgent transmission and de luxe form are admitted, provided that the ROAs concerned accept them. + +### 8 Special conditions relating to the maritime mobile-satellite service + +- B70 8.1** In the maritime mobile-satellite service radiotelegrams should normally be transmitted by radiotelex only. +- B71 8.2** The radiotelegram service in B70 should be arranged in such a way that automatic retransmission is possible. + +## **DIVISION C – RADIOTELEX** + +### **1 General** + +#### **1.1 Routing of calls** + +**C1 1.1.1** A radiotelex call, originating in or destined to a mobile station should be set up via the land station that is considered to be most suitable in relation to the mobile station concerned in terms of the coverage and of the land stations and radio conditions. + +**C2 1.1.2** For radiotelex calls in the direction from land station to mobile station, originator should give, if possible, the approximate geographical position and should also indicate the land station to be used unless the ROA has established a specific route to be followed. Such requests should be respected as far as is practicable. + +**C3 1.1.3** For radiotelex calls in the direction from mobile station to land station, the mobile station may call a particular land station it desires to use. This land station should either handle the call itself or advise the mobile station to use another land station that is more suitable. + +#### **1.2 Information to be supplied, as necessary by the calling party** + +**C4 1.2.1** Calls from a subscriber of the international telex service to a mobile station: + +- a) international telex number and/or answer-back code of the calling telex subscriber; +- b) telex number or mobile station number of the destination mobile station; +- c) name or call sign/ship station identity of the destination mobile station; +- d) international telex number and/or name of the land station to be used, or the approximate geographical position of the destination mobile station; +- e) priority when specifically requested. + +**C5 1.2.2** Calls from a mobile station to a subscriber of the international telex service: + +- a) telex number or mobile station number of the calling mobile station; +- b) the Accounting Authority Identification Code (AAIC) in accordance with CCITT Recommendation D.90 in the single-operator or manual operation; +- c) destination country and/or network; +- d) telex number and/or answer-back code of the destination telex subscriber; +- e) priority when specifically requested. + +**C5A 1.2.3** C4 and C5 above apply to mobile station-to-mobile stations calls as appropriate. + +#### **1.3 Call duration** + +**C6 1.3.1** The chargeable duration of a call will be fixed at the end of the call: + +- a) by the controlling operator for a call originating from a mobile station; +- b) for a call originating in the international telex service; + - by the land station operator in either manual or single-operator operation; + - by the operator of the international position of the originating country in the semi-automatic operation. + +**C7 1.3.2** For a call originating from a mobile station and where two land stations participate in the handling of the call, the decision of the controlling operator who has accepted the call from the originating mobile station shall prevail. + +C8      1.3.3      Should service difficulties be experienced in the course of a call, the chargeable duration shall be reduced automatically or manually to the total time during which transmission conditions were satisfactory, taking into account ITU-T Recommendations (F.60 and F.61). + +#### 1.4      **Validity of requests** + +C9      1.4.1      For a call to a mobile station where it becomes obvious that the required mobile station cannot be reached by the land station, the originating telex subscriber should be informed as soon as possible in order to have the opportunity to have the call cancelled if required. In any event, the caller should be informed no later than in the morning of the second day following the day on which the call request was made. + +C10     1.4.2      In the automatic service any information concerning unsuccessful call attempts shall be provided to the calling subscriber using the service signal format described in Recommendation F.60. The period of validity for store-and-forward messages in the automatic service shall be in accordance with Recommendation F.72. + +#### 1.5      **Exchange of radiotelegrams by radiotelex** + +C11     1.5.1      Stations of the maritime mobile service that are equipped for radiotelex may transmit and receive radiotelegrams by means of radiotelex. + +C12     1.5.2      Stations of the maritime mobile-satellite service should normally transmit and receive radiotelegrams by means of radiotelex only. + +### 2      **Traffic from mobile stations to subscribers of the international telex service** + +#### 2.1      **Automatic operation** + +C13     2.1.1      Whenever possible, fully automatic procedures should be used. + +C14     2.1.2      For a call originating from a mobile station and after connection with the desired land station is established, the mobile station should forward the international telex number, including the telex destination code in accordance with Recommendation F.69. The selection procedures for calls from a mobile station in the maritime mobile-satellite service to a subscriber of the international telex service are described in clause 6 of Division C. + +#### 2.2      **Single-operator operation** + +C15     2.2.1      The land station operator should select the destination telex subscriber directly via the international telex network if fully automatic procedures (C13) are not possible. + +#### 2.3      **Semi-automatic operation** + +C16     2.3.1      The destination telex subscriber should be automatically selected if fully automatic procedures (C13) or single operator procedures (C15) cannot be applied. + +#### 2.4      **Manual operation** + +C17     2.4.1      The land station operator should apply manual procedures if fully automatic (C13), single-operator (C15) or semi-automatic (C16) procedures are not possible. + +#### 2.5      **Store-and-forward service** + +C17A    2.5.1      The mobile station should transmit the message to the land station using automatic procedures. The land station should forward the message via the international telex network to the destination telex subscriber. + +C17B    2.5.2      The procedures for store-and-forward in the operation international telex network, as laid down in Recommendations F.72, U.80 and U.81, should be taken into account. + +#### **2.6 Operational procedures** + +**C18 2.6.1** The manual, semi-automatic and fully automatic procedures for the international telex service, as laid down in Recommendations F.60 and F.61, should be taken into account. + +### **3 Traffic from subscribers of the international telex service-to-mobile stations** + +#### **3.1 Fully automatic operation** + +**C19 3.1.1** Whenever possible fully automatic procedures should be used. + +**C20 3.1.2** A subscriber of the international telex service should forward the international telex number of the destination mobile station including the mobile station number and if necessary the telex destination code of the ocean region in which the mobile station is thought to be located. The call will then be routed, through an appropriate land station to the destination mobile station. The selection procedures for calls from a subscriber of the international telex service to mobile earth station are described in clause 6 of Division C. + +**C21 3.1.3** If the originating telex subscriber, for some technical reason, cannot use fully automatic procedures to establish contact with the mobile station, semi-automatic (C35) or single-operator (C24) procedures should be used. + +**C22 3.1.4** On international telex links a destination code in accordance with Recommendation F.69 will be used unless otherwise agreed bilaterally. + +**C23 3.1.5** Normal telex procedure should be forwarded once the connection between the subscriber of the international telex service and the mobile service and the mobile station has been established. + +#### **3.2 Single-operator operation (direct access by a calling telex subscriber to a foreign land station)** + +##### **3.2.1 Booking** + +**C24 3.2.1.1** If automatic operation (C19) is not possible and where an ROA allows its subscribers to book a call directly with a land station in another country, the originating telex subscriber should select the desired foreign land station, when known, using automatic procedures and submit the call details to the land station operator. + +**C25 3.2.1.2** The charges fixed by the land station operator should be levied on the calling subscriber through international accounting. + +**C26 3.2.1.3** In addition to the information in C4, the calling subscriber should designate the originating national telex network. + +**C27 3.2.1.4** As an alternative to C25 and C26, a land station may accept direct calls from foreign subscribers in other countries provided that the calling telex subscriber supplies the name and address of a party in the country in which the land station is located who will take responsibility for the payment of charges. + +**C28 3.2.1.5** The procedures described in C25 and C27 may only be applied when an appropriate bilateral agreement exists between the two ROAs concerned. If such an agreement does not exist, the land station should refuse such calls to avoid accounting difficulties. + +**C29 3.2.1.6** In C24 and C27 above, the call to the foreign land station will be charged as an ordinary international telex call for its entire duration, regardless of whether it merely serves the purpose of booking the radiotelex call or whether the land station can extend the connection to the mobile station without having to recall the originating subscriber. + +##### **3.2.2 Setting-up** + +**C30 3.2.2.1** When the connection to the destination mobile station can be immediately established, the originating telex subscriber should be released by the land station. When appropriate, the land station operator should recall the originating telex subscriber using automatic procedures. In this particular case, the country in which the land station is located is to be considered as the outgoing country for the call. + +**C31 3.2.2.2** In case C30, the land station should include in the maritime bill: + +- a) the landline charge; +- b) the land station charge. + +**C32 3.2.2.3** When the connection to the destination mobile station can be immediately established, the maritime bill made out by the land station operator should include only the land station charge. + +**C33 3.2.2.4** All information regarding collection of charges for single-operator calls (see C15) should be submitted by the land station ROA on a regular basis to be determined by the ROAs involved. + +**C34 3.2.2.5** The methods to be used in collecting the charges are described in Recommendation D.90. + +#### **3.3 Semi-automatic operation (access by a calling subscriber to one's international centre for the establishment of a direct connection)** + +**C35 3.3.1** If fully automatic (C19) or single-operator (C24) procedures are not possible, the telex operator of the outgoing international centre should receive the booking and selects the mobile station directly. The procedures of Recommendation F.60 should be applied. + +#### **3.4 Manual operation** + +##### **3.4.1 Booking** + +**C36 3.4.1.1** If fully automatic (C19), single-operator (C24) or semi-automatic (C35) procedures are not available, the originating telex subscriber should make his booking at the international telex centre of the outgoing country or network. + +**C37 3.4.1.2** Where conditions permit, the international telex position should select directly the appropriate foreign land station. Alternatively, the international telex position of the outgoing country or network should contact the international telex position in the country or network in which the desired land station is located for the necessary assistance to obtain contact with the land station. + +##### **3.4.2 Setting-up** + +**C38 3.4.2.1** The land station operator will establish a connection with the originating telex subscriber either directly or with the assistance of the own international telex position in the country of the land station. + +**C39 3.4.2.2** Within 24 hours of the call's termination, the land station shall pass the following information to the international telex position of the origin country, where it is recorded for charging and accounting purposes: + +- a) the calling subscriber's telex number; +- b) the mobile station's call sign/ship station identity; +- c) the chargeable duration of the call; +- d) the land station charge to be collected. + +#### **3.5 Store-and-forward** + +**C39A 3.5.1** The originating telex subscriber should select the appropriate land station and deposit the message using the procedures desired in Recommendations F.72 and U.80. + +### 4 Traffic exchanged between mobile stations + +C39B 4.1 Provisions from C13 to C39A apply to traffic exchanged between mobile stations. + +### 5 Radiomarine telex letter + +#### 5.1 Definition + +C40 5.1.1 **Radiomarine telex letter:** A message sent by radiotelex direct from a mobile station to a selected land station or to a selected public telegraph office for delivery by mail or any other appropriate means. + +#### 5.2 Operational procedures + +C41 5.2.1 The mobile station should select the access code allocated for the radiomarine telex letter service, or the access code allocated for the fully automatic telex service followed, if appropriate, by the telex number of the selected land station telegraph office. + +C42 5.2.2 The mobile station should supply the following information: + +- international telex number of the mobile station or mobile station number (as provided in Recommendation F.125); +- the Accounting Authority Identification Code (AAIC); +- destination name and address; +- the words "RADIOMARITIME TELEX LETTER". + +### 6 Special provisions for the maritime mobile-satellite telex service + +#### 6.1 Procedures for calls from subscribers of the international telex service to a mobile earth station + +C43 6.1.1 To establish a call from subscribers of the international telex service to Mobile Earth Stations (MES), the calling telex subscriber should select the telex destination code of the appropriate satellite region followed by the mobile station number. + +C44 6.1.2 The originating telex subscriber, when calling an MES, should input the following selection information, plus any necessary prefix and end-of-selection signal: + +**58STX1 ..... Xn** + +where: + +**58S** is the telex destination code in accordance with Recommendation F.69 (S = 1, 2, 3 or 4); + +**T** is the T-digit in accordance with Recommendation F.125; and + +**X1 ..... Xn** are part of the MES identity in accordance with Recommendation F.125. + +To meet the requirements of the international telex service and in particular the signalling conditions specified in Recommendations U.11 and U.12, the Inmarsat mobile station number should not contain more than 9 digits. + +#### 6.2 Procedures for calls from MES to subscribers of the international telex service + +##### 6.2.1 Setting up a communication channel + +C45 6.2.1.1 The necessary communication channel should be set up in accordance with the procedures established by the appropriate satellite organization. + +##### 6.2.2 Information to be provided + +**C46** **6.2.2.1** The MES should provide all information necessary for setting up the call to the destination telex subscriber. Such information may include: + +- international telex number of the destination telex subscriber; +- desired land earth station whether or not the land earth station is located in the country of the called telex subscriber; +- supplementary service requests. + +The information in a) is required for all calls. The information in b) and c) may be required on some calls, e.g. if the user requests a specific routing of the call or if specific service characteristics are to be applied. + +##### 6.2.3 Calling a subscriber of the international telex service + +**C47** **6.2.3.1** The MES should select the access code 00 followed by the full international telex number of the destination telex subscriber. Hence the numbering sequence selected by MES should be of the form: + +**00 +** + +where: + +| | | +|--------------------------------------|-----------------------------------------------------------------------------| +| 00 | Access code for automatic call | +| <F.69> | 2- or 3-digit telex destination code in accordance with Recommendation F.69 | +| <national telex number> | National number of the destination telex subscriber | +| + | End of selection | + +**C48** **6.2.3.2** It may be possible to select specific supplementary services associated with the call by use of access codes other than 00, for example: + +| | | +|------------------------------------------------------------------|-----------------------------------------------------------------------------| +| A1A2 | Access code including supplementary service requests | +| <F.69> | 2- or 3-digit telex destination code in accordance with Recommendation F.69 | +| <national telex number> N1-Nn | National number of the destination telex subscriber | +| + | End of selection | + +**C49** **6.2.3.3** The operational procedures should permit the MES to choose land earth stations through which the call is to be routed, for example, in order to minimize call charges. + +**C50** **6.2.3.4** The provision of C3 notwithstanding, the land earth station called should always handle the call whenever a MES is within the coverage area of the land earth station. + +#### 6.3 Procedures for MES-to-MES calls + +**C51** **6.3.1** A MES participating in the mobile satellite telex service may send a message to another MES. Selection procedures for MES-to-MES calls which are carried by the international telex service should be similar to those for calls from a MES to subscribers of the international telex service as described in C47. This format will be used whether or not the MESs are in the same satellite region. + +**C52** **6.3.2** The procedures for calls between MESs in the same satellite region, or in satellite regions served by the same LES and which do not utilize the international telex service are not the subject for international standardization. + +#### 6.4 Instructions for maritime mobile-satellite telex service + +**C53** **6.4.1** The general principles laid down in Recommendation F.60 apply also to the maritime mobile-satellite telex service. The instructions should contain the full procedures. + +## **DIVISION D – RADIOTELEPHONE** + +### **1 General** + +#### **1.1 Language to be used** + +**D1 1.1.1** Where applicable and where language difficulties exist, the abbreviations and signals in related provisions of *Radio Regulations* [3] should be used in radiotelephone communications between land stations and mobile stations. + +#### **1.2 Priority** + +**D2 1.2.1** Apart from the general order of priority shown in **A15 to A27**, radiotelephone calls shall have precedence in the terrestrial network, so far as possible, over other telephone calls of the same class. + +#### **1.3 Routing of calls** + +**D3 1.3.1** A radiotelephone call, originating in or destined to a mobile station, should be set up via the land station that is considered to be the most suitable in relation to the mobile station concerned in terms of the coverage and of the land station and radio condition. + +**D4 1.3.2** For radiotelephone calls in the direction from land station to mobile station, the caller should give the one approximate geographical position if possible and may also indicate the land station to be used unless the ROA has established a specific route to be followed. Such requests should be respected as far as is practicable. + +**D5 1.3.3** For radiotelephone calls in the direction from mobile station to land station, the mobile station may call a land station it desires to use. This land station shall either handle the call itself or advise the mobile station to use another land station that is more suitable. + +#### **1.4 Information to be supplied, as necessary, by the calling party** + +**D6 1.4.1** Calls from a telephone subscriber to a mobile station: + +- a) complete telephone number of the calling subscriber; +- b) appropriate identification of the mobile station; +- c) name of the land station to be used or the approximate geographical position of the destination mobile station; +- d) name of the called party, if applicable. All calls to mobile stations in the maritime mobile service are treated as personal calls, with the possible exception of the maritime mobile-satellite service; +- e) priority when specifically requested. + +**D7 1.4.2** Call from a mobile station to a telephone subscriber: + +- a) appropriate identification of the mobile station; +- b) the Accounting Authority Identification Code (AAIC) in accordance with Recommendation D.90 in the single-operator or manual operation; +- c) the information specified in Article 63 of the *Instructions for the International Telephone Service*; +- d) priority when specifically requested. + +**D7A 1.4.3** D6 and D7 above apply to mobile station-to-mobile station calls as appropriate. + +#### **1.5 Call duration** + +**D8 1.5.1** The chargeable duration of a call shall be fixed at the end of the call: + +- a) by the controlling operator for a call originating from a mobile station; +- b) for a call originating in the terrestrial telephone network; + - by the land station operator in manual or single-operator operation; + - by the operator of the international position of the outgoing country in the semi-automatic operation. + +**D9 1.5.2** For a call originating from a mobile station where two land stations participate in the handling of the call, decision of the controlling operator that has accepted the call from the originating mobile station shall prevail. + +**D10 1.5.3** Should service difficulties be experienced in the course of a call, the chargeable duration shall be reduced automatically or manually to the total time during which transmission conditions were satisfactory, taking into account ITU-T Recommendations. + +#### **1.6 Validity of requests** + +**D11 1.6.1** If not cancelled by the caller or refused by the called party, requests for calls from land to mobile stations: + +- a) in the VHF and MF bands shall remain valid until 0800 local time on the day following the day on which the request was made; +- b) in the HF band shall remain valid until 0800 local time on the second day following the day on which the request was made. + +**D12 1.6.2** However, if it becomes obvious that the required mobile station is outside the coverage area of the land station, the caller shall be informed as soon as possible in order to have the call cancelled. + +**D13 1.6.3** All requests for calls from mobile to land stations shall be cancelled where the call is not immediately attended to or on completion of the successive attempts provided for by the rules of each ROA, unless there has been an express request to the contrary by the calling mobile station, which shall be able to determine the waiting period for listening in on the land station frequency with a view to making a further attempt to set up the call. + +#### **1.7 Exchange of radiotelegrams by radiotelephony** + +**D14 1.7.1** Stations of the maritime mobile service that are equipped for radiotelephony may transmit and receive radiotelegrams by means of radiotelephony. Stations of the maritime mobile-satellite service should normally transmit and receive radiotelegrams by means of radiotelex only. + +### **2 Traffic from mobile stations to telephone subscribers** + +#### **2.1 Automatic operation** + +**D15 2.1.1** Whenever possible, fully automatic procedures should be used. + +**D16 2.1.2** For a call originating from a mobile station and after connection with the desired land station has been established, the mobile station should forward the appropriate telephone country code (Recommendation E.164) and the number of the subscriber of an ROA's telephone network. The selection procedures for calls in the maritime mobile-satellite service, see clause 4 of Division D. + +#### **2.2 Single-operator operation** + +**D17 2.2.1** The land station operator should select the called subscriber directly via the automatic telephone networks if automatic procedures (D15) are not possible. + +#### **2.3 Semi-automatic operation** + +**D18 2.3.1** The called telephone subscriber should be automatically selected by a telephone operator in the country in which land station is situated if fully automatic (D15) or single-operator (D17) procedures cannot be applied. + +#### **2.4 Manual operation** + +**D19 2.4.1** The land station operator should apply manual procedures if fully automatic (D15), single-operator (D17) or semi-automatic (D18) procedures are not possible. + +#### **2.5 Operational procedures** + +**D20 2.5.1** The fully automatic, semi-automatic and manual procedures for the terrestrial telephone network, as laid down in Recommendations E.105 and E.140 and the *Instructions for the International Telephone Service* [6] should be taken into account. + +### **3 Traffic from telephone subscribers to mobile stations** + +#### **3.1 Fully automatic operation** + +**D21 3.1.1** Whenever possible, fully automatic procedures should be used. + +**D22 3.1.2** The subscriber of an ROA's telephone network should select the appropriate international telephone number, which would include the mobile station number. The call routing will be determined by the appropriate country code which is chosen and which will form part of the international telephone number (see D41). The call will then be routed through an appropriate land station to the destination mobile station. The selection procedures for calls from a subscriber of the international telephone service are described in clause 5 of Division D. + +**D23 3.1.3** If the calling subscriber, for some technical reason, cannot use fully automatic procedures to establish contact with mobile station, semi-automatic or single operator procedures should be used. + +#### **3.2 Single-operator operation (direct access by a calling subscriber to a foreign land station)** + +##### **3.2.1 Booking** + +**D24 3.2.1.1** If fully automatic operation is not possible and where an appropriate bilateral agreement between ROA's allows its subscriber to book a call directly with a land station in another country, the calling telephone subscriber should select desired foreign land station, where known, using automatic procedures and submit the call details to the land station operator. If such an agreement does not exist, the land station should refuse such calls to avoid accounting difficulties. + +**D25 3.2.1.2** The charges fixed by the land station operator should be levied on the calling subscriber through international accounting. + +**D26 3.2.1.3** In addition to the information in D6, the calling subscriber must designate his country and national telephone number. + +**D27 3.2.1.4** As an alternative to D25, land stations may accept direct calls from telephone subscribers in other countries provided that the calling telephone subscriber supplies the name and address of a party in the country, in which the land station is located, who will take responsibility for the payment of charges. + +**D28 3.2.1.5** The procedures described in D25 and D27 may only be applied when an appropriate bilateral agreement exists between the two ROAs concerned. + +**D29 3.2.1.6** D24 and D27 above, the call to the foreign land station will be charged as an ordinary international telephone call for its entire duration, regardless of whether it merely serves the purpose of booking the radiotelephone call or whether the land station can extend the connection to the mobile station without having to recall the originating subscriber. + +##### **3.2.2 Setting-up** + +**D30 3.2.2.1** When demand operation cannot be used, the calling telephone subscriber will be disconnected by the land station. When the land station operator then recalls the caller using automatic direct selection, the land station country is considered as the outgoing country for the call. + +**D31 3.2.2.2** In case D30, the land station includes in the maritime bill: + +- a) the land-line charge; +- b) the land station charge. + +**D32 3.2.2.3** When demand operation has been used, the maritime bill made out by land station operator includes only: + +- the land station charge. + +**D33 3.2.2.4** All information regarding collection of charges for single-operator calls (see D17) should be submitted by the land station ROA on a regular basis to be determined by the ROAs involved. + +**D34 3.2.2.5** The methods to be used in collecting the charges are described in Recommendation D.90. + +#### **3.3 Semi-automatic procedure (access by a calling subscriber to one's international centre for the establishment of a direct connection)** + +**D35 3.3.1** If automatic (D21) or single-operator (D24) procedures are not possible, the telephone operator of the international centre of the outgoing country receives the booking and selects the mobile station directly. Normal international semi-automatic telephone procedures shall be applied. + +#### **3.4 Manual operation** + +##### **3.4.1 Booking** + +**D36 3.4.1.1** If automatic (D21), single-operator (D24) or semi-automatic (D35) procedures cannot be applied, the subscriber should make his booking at an international centre in the outgoing country. + +**D37 3.4.1.2** If conditions permit, an international position should select the foreign land station in question directly. Otherwise an international position in the land station country should be selected to give the necessary assistance to obtain contact with the land station in question. Alternatively, the international telephone position of the outgoing country or network should contact the international telephone position in the country of network in which the desired land station is located for the necessary assistance to obtain contact with the land station. + +##### **3.4.2 Setting-up** + +**D38 3.4.2.1** The land station operator will establish a connection with the originating telephone subscriber either directly or with the assistance of his own international telephone position. + +**D39 3.4.2.2** After the termination of the call, the land station shall pass the following information to the international telephone position of the country of origin, where it is recorded for charging and accounting purposes: + +- a) the calling subscriber's telephone number; +- b) the mobile station's name and/or appropriate identification; +- c) the chargeable duration of the call; +- d) the land station charge to be collected. + +**D40 3.4.2.3** Alternatively all information regarding collection of charges should be submitted to the caller's ROA on a regular basis to be determined by the ROAs involved. + +### **4 Traffic exchanged between mobile stations** + +**D40A 4.1** Provisions from D15 to D40 apply to traffic exchanged between mobile stations as appropriate. + +### **5 Special provisions for the maritime mobile-satellite telephone service** + +#### **5.1 Procedures for calls from subscribers of a terrestrial telephone network to a mobile earth station** + +**D41** To establish a call from a telephone subscriber to a Mobile Earth Station (MES), the calling telephone subscriber should select the international mobile number appropriate to the mobile system being accessed. The international mobile number may vary according to the maritime mobile-satellite system offering the service. Where the system provides service on the basis of individual satellite regions, the originating subscriber should select the international mobile number which will contain the telephone country code for the appropriate satellite region followed by the MES number. Where the system offers service on the basis Single Network Access Code operation (SNAC), the originating subscriber should select the international mobile number which will contain the appropriate telephone country code for worldwide access followed by the MES number. + +**D42** The selection information for the Inmarsat systems providing service on the basis of either satellite regions or SNAC operation may be located in CCITT Recommendation E.215. + +#### **5.2 Procedures for calls from MES to subscribers of the terrestrial telephone networks** + +##### **5.2.1 Setting up a communication channel** + +**D43** The necessary communication channel should be set up in accordance with the procedures established by the appropriate satellite organization. + +##### **5.2.2 Information to be provided** + +**D44** The MES should provide all information necessary for setting up the call to the called subscriber: + +- a) called party address international telephone number of the called subscriber including any prefix; +- b) desired land earth station whether or not the land earth station is located in the country of the called subscriber; +- c) selection of a specific ROA (for further study); +- d) bearer service/teleservice characteristics, including supplementary service requests. + +The information in a) is required for all calls. The information in b) and c) may be required on some calls, e.g. if the user requests a specific routing of the call or if specific service characteristics are to be applied. + +##### **5.2.3 Calling a telephone subscriber** + +**D45 5.2.3.1** The MES should select the prefix 00 followed by the full international telephone or ISDN number of the called telephone subscriber. Hence, the numbering sequence selected by a MES should be of the form: + +$$00I_1I_2I_3N_1 \dots N_n$$ + +where: + +**00** Prefix for automatic call + +**$I_1I_2I_3$** 1-, 2- or 3-digit country code in accordance with Recommendation E.164 + +**$N_1 \dots N_n$** National (subscriber) telephone number + +**D46**    **5.2.3.2**   It may also be possible to select specific services associated with the call by use of prefixed numbers other than 00. For example: + +**P1P2**            Prefix + +**I1I2I3**            1-, 2- or 3-digit country code in accordance with Recommendation E.164 + +**N1 ... Nn**        National (subscriber) telephone number + +**D47**    **5.2.3.3**   The operational procedures should allow the MES to choose the land earth station through which the call is to be routed, for example, in order to minimize call charges. + +**D48**    **5.2.3.4**   The provision of D5 notwithstanding, the land earth station called should always handle itself the ship-to-shore call whenever the calling ship earth station is within the coverage area of the land earth station. + +##### **5.2.4    Access to special destination, services or facilities** + +**D49**    **5.2.4.1**   The MES will have access to a special destination, service or facility by selecting a special prefix otherwise allocated. + +**D50**    **5.2.4.2**   Each ROA may decide which special destinations, services or facilities to provide, where they are to be located and how the call would be routed. + +**D51**    **5.2.4.3**   An example of general selection sequence will be as follows: + +$$D_1D_2I_1I_2I_3X_1X_2$$ + +where: + +**D1D2**            Prefix, identifying the category and type of special destinations, service or facilities + +**I1I2I3**            Optional country code + +**X1X2**            Other optional digits + +#### **5.3    Procedures for MES-to-MES calls** + +**D52**    **5.3.1**    A MES participating in the mobile satellite telephone service may send a call to another MES. Selection procedures for MES-to-MES calls which are carried by the ROA's telephone service should be similar to those for calls from a MES to telephone subscriber, as described in D44. This format will be used whether or not MESs are in the same satellite region. + +**D53**    **5.3.2**    Each ROA operating a land earth station may decide whether to switch ship-to-ship traffic within satellite region at the land earth station or at an international telephone exchange. The procedures for calls between MESs in the same satellite region, or in satellite regions served by the same land earth station and which do not utilize the ROA's telephone service are not the subject of international standardization. + +#### **5.4    Instruction for maritime mobile-satellite telephone service** + +**D54**    **5.4.1**    For telephone subscribers the general principles laid down in Recommendation E.120 apply also to the maritime mobile-satellite telephone service. The instructions should contain the full selection procedures. + +## **DIVISION E – RADIOTELEXOGRAM** + +### **1 General** + +#### **1.1 Definition** + +- E1**    **1.1.1**    A **radiotelexogram** is a message sent by telex or telefax direct from an originator subscriber to a foreign land station for transmission to a mobile station or a message sent from a mobile station to a land station for transmission directly to a telefax or telex subscriber (see Note in E5). + +#### **1.2 Provision of service** + +- E2**    **1.2.1**    Operating, charging and accounting procedures should be subject to a bilateral agreement between the ROAs concerned. If such an agreement does not exist, the land station should refuse such radiotelexograms in the shore-to-ship direction. +- E3**    **1.2.2**    Alternatively, land stations may accept radiotelexograms from foreign originators provided that the calling subscriber supplies the name and address of a party in the land station country that will take responsibility for the payment of charges. + +#### **1.3 Validity of requests** + +- E4**    **1.3.1**    If it becomes obvious that the required mobile station is outside the coverage area of the land station, the originator shall be informed as soon as possible in order to have the radiotelexogram cancelled. + +### **2 Operational procedures** + +- E5**    **2.1**    The transmission of radiotelexograms should be in accordance with Divisions **B** and **C** or other ITU-T Recommendations as appropriate except as specified below or where varied through bilateral agreement. + +NOTE – A radiotelexogram is different from a radiotelex or telefax call. In particular, a radiotelexogram is normally transmitted between the mobile station and the land station as a radiotelegram by Morse telegraphy or by radiotelephony. + +- E6**    **2.2**    Information to be supplied to the land station, as necessary, by the originator. + +#### **E7**    **2.2.1**    Radiotelexogram to a mobile station: + +- a) international telex number and/or answer-back code or the telefax number of the calling subscriber; +- b) the date and time of origin; +- c) the word RADIOTELEXOGRAM; +- d) name or designation of the addressee with supplementary particulars if necessary; +- e) the name of the mobile station followed, when necessary, by its call sign/ship station identity or where this is not known, the particulars of the passage made by the mobile station; +- f) any specific delivery instructions. + +#### **E8**    **2.2.2**    Radiotelexogram from a mobile station: + +- a) name and/or call sign/ship station identity of the mobile station; +- b) identification of the accounting authority; +- c) the date and time of origin; +- d) the word RADIOTELEXOGRAM; +- e) destination country and/or network; +- f) called subscriber's telex number and answer-back code or telefax number. + +## **Bibliography** + +- [1] *International Telecommunication Regulations*, ITU, Geneva, 1992. +- [2] *International Telecommunication Constitutions*, ITU, Geneva, 1992. +- [3] *Radio Regulations*, ITU, Geneva, 1994. +- [4] *List of Coast Stations*, ITU, Geneva, 1993. +- [5] *List of Ship Stations*, ITU, Geneva, 1995. +- [6] *Instructions for the International telephone service*, ITU, Geneva, 1993. \ No newline at end of file diff --git a/marked/F/T-REC-F.122-198811-I_PDF-E/raw.md b/marked/F/T-REC-F.122-198811-I_PDF-E/raw.md new file mode 100644 index 0000000000000000000000000000000000000000..e8869dcdb21001caab210aeee59e4768f5c9d13b --- /dev/null +++ b/marked/F/T-REC-F.122-198811-I_PDF-E/raw.md @@ -0,0 +1,379 @@ + + +![ITU logo](2dfa6ac3edfe874f68aa0cbccaa42322_img.jpg) + +The logo of the International Telecommunication Union (ITU) features a globe with a lightning bolt superimposed on it, and the letters 'ITU' in a bold, sans-serif font. + +ITU logo + +INTERNATIONAL TELECOMMUNICATION UNION + +**ITU-T** + +**F.122** + +TELECOMMUNICATION +STANDARDIZATION SECTOR +OF ITU + +**OPERATIONS AND QUALITY OF SERVICE +MOBILE SERVICE** + +--- + +**OPERATIONAL PROCEDURES FOR +THE MARITIME SATELLITE DATA +TRANSMISSION SERVICE** + +**ITU-T Recommendation F.122** + +(Extract from the *Blue Book*) + +--- + +# NOTES + +1 ITU-T Recommendation F.122 was published in Fascicle II.4 of the *Blue Book*. This file is an extract from the *Blue Book*. While the presentation and layout of the text might be slightly different from the *Blue Book* version, the contents of the file are identical to the *Blue Book* version and copyright conditions remain unchanged (see below). + +2 In this Recommendation, the expression “Administration” is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. + +# **OPERATIONAL PROCEDURES FOR THE MARITIME SATELLITE DATA TRANSMISSION SERVICE** + +## **1 Introduction** + +1.1 The purpose of this Recommendation is: + +- a) to standardize the procedures for subscribers of a public data network (PDN) calling ship earth stations in the Maritime Satellite Data Transmission Service; +- b) to standardize the procedures for calling subscribers of a PDN from ship earth stations using the packet switched data transmission service defined in Recommendations X.25 and X.352; +- c) to standardize the procedures for calling subscribers of a PDN from ship earth stations by accessing packet assembly/disassembly facilities (PAD) as defined in Recommendation X.351. + +*Note 1* - This Recommendation does not cover data calls passed through the international public switched telephone network other than those which are accessed through PADs designed in accordance with Recommendation X.351. + +*Note 2* - Procedures for subscribers of a PDN calling a ship earth station by accessing a PAD are for further study. + +1.2 Related CCITT Recommendations are: + +- E.200/F.110 Operational provisions for the maritime mobile service. +- E.210/F.120 Ship station identification for VHF/UHF and Maritime Mobile-Satellite Services. +- E.215 Telephone/ISDN numbering plan for the Mobile-Satellite Service of INMARSAT. +- E.216 Selection procedure for the INMARSAT mobile-satellite telephone and ISDN services. +- F.125 Telex numbering plan for the Mobile-Satellite Service of INMARSAT. +- F.126 Selection procedures for the INMARSAT Mobile-Satellite Telex Service. +- X.1 International user classes of service in public data networks and ISDNs. +- X.2 International data transmission services and optional user facilities in public data networks. +- X.96 Call progress signals in public data networks. +- X.121 International numbering plan for public data networks. +- X.180 Administrative arrangements for international closed user groups (CUGs). +- X.300 General principles and arrangements for interworking between public data networks, and between public data networks and other public networks. +- X.350 General interworking requirements to be met for data transmission in the international public mobile satellite systems. +- X.351 Special requirements to be met for packet assembly/disassembly facilities (PADS) located at or in association with coast earth stations in the Maritime Satellite Service. +- X.352 Interworking between packet switched public data networks and the public maritime mobile satellite data transmission system. +- X.353 Routing principles for interworking public maritime mobile satellite data transmission systems in the public data network. + +1.3 The following basic considerations were taken into account when formulating this Recommendation: + +- a) Each ship is allocated a unique 9-digit INMARSAT mobile number. + +*Note* - The first generation maritime mobile satellite (INMARSAT) system also caters for a 7-digit INMARSAT mobile number beginning with digit 1. + +- b) The routing principles to be used for data transmission to and from ships are as defined in Recommendation X.353. + +- c) The procedures to be used on board ships when accessing a subscriber of a PDN should be as similar as possible to the procedures used on PDNs. + - d) The Maritime Satellite Service is international in nature and international procedures will be adopted to provide access to this service. For some purposes, a maritime satellite data transmission system can be regarded as analogous to a national network and the ship earth stations as subscribers within that network. + - e) The procedures used on board the ship when accessing a subscriber of a PDN should be the same in all coast earth stations. +- 1.4 The following basic access methods are defined for the Maritime Satellite Data Transmission Service: +- a) access using the packet mode in accordance with draft Recommendation X.352; + - b) access using packet assembly/disassembly facilities (PADS) in accordance with Recommendation X.351. +- 1.5 Ships may form part of a closed user group (CUG) in accordance with Recommendation X.180. It should be noted that a ship being part of a CUG should be known as such in all coast earth stations. + +The International Maritime Satellite Organization (INMARSAT) should be charged with the responsibility of acting as the coordinating Administration (see Recommendation X.180) for ship earth stations wanting to form CUGS. The application from ships to join or cease membership of a CUG should be forwarded through INMARSAT who should then inform the coordinating Administration of the CUG in accordance with Recommendation X.180. + +For each CUG the same index identifying the CUG by a calling ship earth station (see Recommendation X.300) should be used in all coast earth stations in order to simplify the calling procedures. The index should be coordinated through INMARSAT. + +1.6 Permanent virtual circuits (PVC) would require a permanent circuit between a ship earth station and the coast earth station. The PVC service should not normally be offered to ship earth stations (see also Recommendations X.2 and X.350). + +## 2 Procedures for ship originated calls + +### 2.1 Access to packet switched PDNs + +#### 2.1.1 Calling a subscriber of a PDN + +2.1.1.1 The coast earth station through which the call is to be set up is selected by procedures defined within the INMARSAT system. + +2.1.1.2 The ship board subscriber should select a prefix followed by the full international number of the called DTE. Hence, the numbering sequence selected by a ship board subscriber will be as shown in Table 1/F.122 or, where an integrated numbering system exists within a country, as shown in Table 2/F.122. + +TABLE 1/F.122 + +| | | +|-----------------------------------|----------------------------------| +| 0 | Prefix | +| DNIC | Data network identification code | +| N 1 ... N n | Network terminal number | + +TABLE 2/F.122 + +| | | +|-----------------------------------|----------------------| +| 0 | Prefix | +| DCC | Data country code | +| N 1 ... N n | National data number | + +See also Recommendations X.121 and X.350. + +2.1.1.3 The calling DTE address of the ship board DTE should always be inserted and have the following format: + +$$TX_1, X_2 \dots X_8 Y$$ + +where $TX_1, X_2 \dots X_8$ is the INMARSAT mobile number as defined in Recommendation F.125 and Y is an optional digit identifying a specific DTE on board the ship. If the ship is equipped with only one DTE, the digit Y should be omitted. The calling DTE address should not include the prefix and the DNIC allocated to the ocean area in which the ship earth station is located at the time of the call. + +2.1.1.4 Selection of facilities on a call-by-call basis should be in accordance with Recommendations X.25 and X.300. The facilities that may be offered on a call-by-call basis are given in Recommendation X.2. A given facility may not be offered in all coast earth stations. + +User facilities that have to be agreed for a contractual period are also listed in Recommendation X.2. The application for a given facility should be made with the Administrations operating coast earth stations providing access to public packet switched data networks. The availability of user facilities on the various coast earth stations should be coordinated and be disseminated to ships by INMARSAT; however, the decision to implement a given user facility should be made by each coast earth station owner. + +Further study is required to determine which user facilities and/or other user parameters should be offered on all coast earth stations. + +*Note* - Separate provisions apply to closed user groups as described in § 1.5 above. + +#### 2.1.2 Use of data transmission prefixes + +2.1.2.1 Annex A to Recommendation F.126 defines data transmission prefixes for accessing special terminations. The general called DTE address format when accessing such a termination will be as shown in Table 3/F.122. + +TABLE 3/F.122 + +| | | +|-----------------------------------|-------------------------------------------------------------| +| P 1 P 2 | Two-digit prefix defined in Annex A to Recommendation F.126 | +| A 1 ... A k | Optional digits | + +Optional digits may be a data country code (DCC), a data network identification code (DNIC) or other additional digits. + +2.1.2.2 The calling DTE address should have the format defined in § 2.1.1.3 above. + +2.1.2.3 Selection of facilities, if required, should be as defined in § 2.1.1.4 above. + +2.1.2.4 The use of some prefixes could be barred to some customers. + +2.1.2.5 The prefix will be sent on the radio path to the coast earth station but would not be used outside the satellite system. The prefix will be converted at the coast earth station, if required, to the data number associated with the appropriate destination. + +#### 2.1.3 Ship-to-ship calls + +For ship-to-ship calls the called DTE address should have the composition shown in Table 4/F.122. + +TABLE 4/F.122 + +| | | | +|---|---------------------------------------------------|--------------------------------------------------| +| 0 | | Prefix | +| | 111S | DNIC allocated to the Maritime Satellite Service | +| | TX 1 X 2 ... X 8 | INMARSAT mobile number | +| | Y | Optional digit to designate a particular DTE | + +The digit S determines the ocean area in which the called ship is located. The values for the digit S are given in Recommendation X.121. The digit Y identifies a specific DTE on board the ship. + +#### 2.1.4 Call progress signals and diagnostic codes + +Call progress signals and diagnostic codes may be received in accordance with § 8.2 of Recommendation X.350. + +#### 2.1.5 CCITT standardized services + +Ships should have full access to CCITT standardized services offered on public data networks such as Teletex, Videotex, and facsimile in accordance with relevant F and S Series Recommendations. + +### 2.2 Access to PADs + +2.2.1 Ships with start-stop mode DTEs may be offered access to packet switched public data networks through PADs. + +PADs associated with coast earth stations are defined in Recommendation X.351. These PADs are defined in such a way that identical procedures may be used when working towards PADs located at different coast earth stations. + +*Note* - Ships may also access a national PAD in a country, but in such cases special procedures only applicable for that PAD would be required. Only PADs designed in accordance with Recommendation X.351 are considered in this Recommendation. + +#### 2.2.2 Telephone access procedure + +The coast earth station at which the PAD is located is selected in accordance with INMARSAT procedures for telephone calls. The start-stop mode DTE on board the ship would use telephone procedures in order to access a PAD. When the telephone circuit has been established, i.e. when the dial tone is heard, the following digits have to be dialled: + +20            Prefix + +X1 X2    Digits indicating required data rate + +Recommendation X.351 specifies that the following data rates and types of modem for full duplex operation will be supported by the PAD: + +- Recommendation V.21, 300 bit/s; +- Recommendation V.22, 1200 bit/s; +- Recommendation V.23, 75/1200 bit/s. + +The specific modes of operation of the modems are given in Recommendation X.351, § 1.1. + +The number to be dialled for each of these data rates is given in Table 5/F.122. + +TABLE 5/F.122 + +| Data rate (bit/s) | Dialling sequence | +|-------------------|-------------------| +| 300 | 2002 | +| 1200 | 2003 | +| 75/1200 | 2011 | + +The PAD may support other data rates on an optional basis. For such data rates the dialling information will be as given in Table 2/X.351. + +The dialling sequences 2050 through 2099 are reserved for national use and may be used for access to for example Videotex data bases via the PAD. + +#### 2.2.3 *Data access procedures* + +The call control procedures to be used during set-up and clearing of the data connection and the data transfer protocol are given in Recommendation X.351. + +The basic elements of the procedure are: + +First the DTE accesses the PAD by sending a service request signal consisting of the characters “.” (full stop) and “CR” (carriage return) corresponding to the characters 2/14 0/13 of International Alphabet No. 5 (see Recommendation T.50 for a description of International Alphabet No. 5. + +The PAD will respond by returning a PAD identification signal, the composition of which is left to the Administration operating the PAD. + +The DTE shall then send, as soon as possible, a signal, i.e. a string of characters, called the selection PAD command signal. This signal is composed as shown in Annex A. The purpose of this signal is: + +- to provide the PAD with the address of the called DTE; and +- to provide the PAD with the identity of the calling DTE. + +When the call has been extended to the called DTE, the character string COM will be received from the PAD. + +At this stage the system enters into the data transfer phase. + +The call set-up procedure outlined above may be operated manually or be programmed into the DTE. + +During call set-up and during the data transfer phase, the DTE may receive PAD service signals as defined in Recommendation X.28. These signals may indicate various call failures. + +Recommendation X.351 also allows other procedures to be used during call set-up. See that Recommendation for further details. + +#### 2.2.4 *Standard profile and profile selection* + +In order to operate a PAD, a number of PAD parameters must be specified. A general list of PAD parameters is contained in Recommendation X.3. + +The PAD defined in Recommendation X.351 offers an initial standard profile with PAD parameter values as given in Table 3/X.351. This standard profile permits a data transfer protocol based on International Alphabet No. 5. + +The characters 1/0 (DLE), 1/1 (DC1) and 1/3 (DC3) are used for control purposes and can therefore not be passed transparently through the PAD. The character 1/0 (DLE) is interpreted by the PAD as an escape from the data transfer phase. Therefore, this character is used in order to enable commands to be sent to the PAD. For the various commands that can be used during the data transfer phase, see Recommendation X.28. + +The initial standard profile offers the following capabilities: + +- by using the character 1/0 (DLE) commands can be sent to the PAD; +- the PAD can at any time send service signals to the DTE; + +- the DTE can use characters in order to indicate when a data packet shall be sent from the PAD into the data network; +- the DTE may use the characters 1/1 (DC1) and 1/3 (DC3) for flow control. + +The profile does not permit the PAD to provide for any editing functions. Characters which are entered into the PAD are not echoed to the DTE. This has been done because the echoed character will be delayed by approximately 0.6 seconds, thus reducing the character rate to less than two characters per second. The echo mode should therefore not be used. If echo is required, it should be generated locally in the DTE. + +A transparent profile or any other profile standardized in Recommendation X.28 may be selected as soon as the data transfer phase is entered by procedures defined in Recommendations X.28 and X.351. The transparent profile will allow octets of data to be passed transparently between the two DTEs. When operating in this mode, the on-board DTE cannot recall the PAD, nor can the PAD send any service signals to the on-board DTE. Therefore, a data transfer protocol must exist between the two DTEs for proper call control. + +The various PAD parameters which can be selected by the DTE are given in Recommendation X.3. It should be noted that some of these parameters may not be implemented on all PADS. + +Since DTEs may treat the parity bit included in the data octets differently when International Alphabet No. 5 is used, Recommendation X.351 specifies the means by which this problem can be resolved. + +#### 2.2.5 Clearing of calls + +At the end of the call the user at the on-board DTE should make sure that the satellite telephone circuit is properly cleared. The PAD may include provisions for clearing the circuit but this may delay the clearing for several minutes. During this time, the user on-board is still being charged for the use of a maritime satellite telephone circuit. + +## 3 Procedures for shore-to-ship calls + +### 3.1 Calls to ships with DTEs operating in the packet mode + +3.1.1 A subscriber of a PDN calling a ship equipped with DTEs operating in the packet mode will select a numbering sequence as shown in Table 6/F.122. + +3.1.2 The numbering sequence requires the subscriber to know the satellite coverage area in which the ship is located in order to select the S digit. The values for the digits are given in Recommendation X.121. + +TABLE 6/F.122 + +| | | | | | +|---|-----|---|---------------------------------------------------|-----------------------------------------------------| +| P | | | | International prefix (if required) | +| | 111 | | | Martitime data country code | +| | | S | | Ocean area code | +| | | | TX 1 X 2 ... X 8 | INMARSAT mobile number | +| | | | | Y      Optional digit to designate a particular DTE | + +3.1.3 Facility selection will follow the normal procedures used in the PDN of origin. + +3.1.4 The calling subscriber should be aware of the long two-way transmission delay (approximately 0.6 seconds) on the maritime satellite circuit. This implies that acknowledgement signals may be delayed more than for terrestrial connections. + +3.1.5 Call progress signals and diagnostic codes may be received in accordance with Recommendation X.350, § 8. 1. + +3.1.6 When accessing a ship for CCITT standardized services such as Teletex, Videotex and facsimile, the calling subscriber should make sure before initiating the call that the called ship is equipped with the appropriate termination. + +### 3.2 Calls to ships with DTEs operating in the start-stop mode + +For further study. + +## 4 Group calls + +Group calls to ship earth stations are calls comprising a message sent simultaneously to all ships within a predetermined group. The group numbering scheme is given in Annex B of Recommendation F.125. + +Group calls using direct access through a PDN will not be permitted. + +Other means for setting up group calls through public data networks, e.g. by using a message handling system (MHS), are for further study. + +## ANNEX A + +(to Recommendation F.122) + +### Format of selection PAD command signal for maritime satellite applications + +#### A.1 General format + +The general format of the selection PAD command signal is given in Recommendation X.28 and is composed as shown in Figure A-1/F.122. + +![](b28af4985cdef1e519e3aaf26561dcb3_img.jpg) + +Beginning of signal +↓ + +| | | | | | | | | +|-------------------------|---|--|---|-------------------------|---|---------------------------|-----------------| +| Facility request signal | , | | , | Facility request signal | – | Called DTE address signal | (CR)
or
+ | +|-------------------------|---|--|---|-------------------------|---|---------------------------|-----------------| + +FIGURE A-1/F.122 + +The character 2/12 (,) is used as a separator between facility request signals and the character 2/13 (–) is used as a separator between the facility request block and the called DTE address signal. The selection PAD command signal is terminated by either of the characters 0/13 (CR) or 2/11 (+). + +The facility request block must contain the network user identification (NUI) facility request signal. Other facility request signals are optional. + +If the PAD receives a selection PAD command signal with a separator character 2/12 (,) followed by an empty facility request field, the signal will be accepted provided that the other fields of the signal are accepted. + +The inclusion of user data in the selection PAD command signals is for further study. + +#### A.2 Network user identification (NUI) facility request signal + +##### A.2.1 Format of the NUI facility request signal + +The NUI facility request signal shall have the format of Figure A-2/F.122 and be sent in the order shown. + +Beginning of signal + +↓ + +| | | | +|---|-----------------------------------------------------------------|---------------| +| N | 9 digit INMARSAT mobile number
(Recommendations E.215/F.125) | Mnemonic code | +|---|-----------------------------------------------------------------|---------------| + +FIGURE A-2/F.122 + +N is the character 4/14 (N) of International Alphabet No. 5. The mnemonic code of the NUI facility request signal may consist of 1 to 4 characters in columns 2 to 7 of International Alphabet No. 5, except 2/0 (SP), 7/15 (DEL), 2/13 (-), 2/12 (,) and 2/11 (+). + +##### A.2.2 *Validation of the NUI facility request signal* + +The coast earth station will check the general authorization of the calling ship for access to the INMARSAT system. Therefore, validation of the NUI facility request signal may be limited to the mnemonic code. However, the possibility of fraudulent calling would be reduced if the ship station identity is also included in the validation. + +The ship station identity may also be used for identifying the calling ship for charging purposes, and for insertion of the calling DTE in the call request packet. + +#### A.3 *Composition of the called DTE address signal* + +#### A.3.1 *Calls to a DTE of a PDN* + +The called DTE address signal shall consist of the prefix 0 followed by the full international number of the called DTE. This applies also when the called DTE is located in the same country as the maritime PAD. + +#### A.3.2 *Calls to special destinations* + +Annex A of Recommendation X.350 defines two-digit prefixes for access to special destinations. For calls to such destinations the called DTE address shall consist of the two-digit prefix, optionally followed by additional digits. + +### A.4 *Optional facilities* + +Facilities to be offered in a maritime PAD is to be determined by the Administration concerned. + +The shipboard DTE may request available facilities in accordance with the procedures given in Recommendation X.28. \ No newline at end of file diff --git a/marked/F/T-REC-F.130-198811-I_PDF-E/raw.md b/marked/F/T-REC-F.130-198811-I_PDF-E/raw.md new file mode 100644 index 0000000000000000000000000000000000000000..78c8793f72fac8a53b1f108c2f63b9244512b01d --- /dev/null +++ b/marked/F/T-REC-F.130-198811-I_PDF-E/raw.md @@ -0,0 +1,86 @@ + + +![ITU logo](2dfa6ac3edfe874f68aa0cbccaa42322_img.jpg) + +The logo of the International Telecommunication Union (ITU) features a globe with a lightning bolt superimposed on it, and the letters 'ITU' in a bold, sans-serif font. + +ITU logo + +INTERNATIONAL TELECOMMUNICATION UNION + +**ITU-T** + +**F.130** + +TELECOMMUNICATION +STANDARDIZATION SECTOR +OF ITU + +**OPERATIONS AND QUALITY OF SERVICE +MOBILE SERVICE** + +--- + +**MARITIME ANSWER - BACK CODES** + +**ITU-T Recommendation F.130** + +(Extract from the *Blue Book*) + +--- + +# NOTES + +1 ITU-T Recommendation F.130 was published in Fascicle II.4 of the *Blue Book*. This file is an extract from the *Blue Book*. While the presentation and layout of the text might be slightly different from the *Blue Book* version, the contents of the file are identical to the *Blue Book* version and copyright conditions remain unchanged (see below). + +2 In this Recommendation, the expression "Administration" is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. + +# **MARITIME ANSWER-BACK CODES** + +The CCITT, + +*considering* + +(a) that it is technically feasible to interconnect certain radiocommunication systems in the Maritime Mobile Service1) with the international telex network in order to provide a radiotelex service between ships and telex subscribers, in accordance with Recommendation F.110; + +(b) that Recommendation F.60 specifies the operational provisions for the international telex service, and in particular, for the composition of answer-back codes; + +(c) that, since no single Administration is responsible for the allocation of answer-back codes to ships in the way that such codes are administered in individual national telex networks, some rules further to those set down in Recommendation F.60 are desirable, for example to facilitate automatic operation in the ship-to-shore direction and to simplify the handling of inquiries concerning calls to or from ships; + +(d) that, to the extent possible, the alphabetic portion of maritime answer-back codes should provide a means for detecting possible mutilation of the numerical portion, particularly in the case of ship-to-shore calls where it may be used for charging and accounting purposes, + +*unanimously declares* + +that, at least in cases where interconnection with the international telex network is desired, answer-back codes generated by teleprinters (or equivalent terminal devices) on ships shall comply with the following requirements. + +**1** Regardless of the transmission medium used (e.g. maritime-mobile satellite, HF "direct printing", VHF), the answer-back code, as printed out for a distant subscriber, shall include the following three components in the order indicated: + +- a) the "ship station's number" of 6, 7, 8 or 9 digits (see § 2 below); +- b) the "ship's (abbreviated) name" of 4 letters (see § 3 below); +- c) the letter X, preceded by a space, as a "telex network identification code" reserved for mobile stations (see Recommendation F.68). + +**2** The 6, 7, 8 or 9 digits of the ship station's number are those allocated by the licensing Administration in accordance with Recommendation F.120 but with the final 3, 2 or 1 zeroes deleted for 6, 7 or 8-digit numbers respectively. + +**3** The letters comprising the ship's (abbreviated) name [§ 1b) above] should be chosen with the guidance and under the control of the licensing Administration with a view not only to identifying the ship (or the company, or the fleet, as is most appropriate) in a clear manner for a distant subscriber, but also to providing a means for checking the ship station's number as recorded in the answer-back code. The name should not include shifts, figures or signs. Where a ship has been allocated a 6, 7 or 8-digit number, in principle the ship's (abbreviated) name should not need to be changed when the numbering plan is modified to incorporate 7, 8 or 9-digit numbers. + +**4** The series of twenty combinations in International Telegraph Alphabet No. 2 comprising the answer-back code shall be allocated as follows: + +--- + +1) As in Recommendation F.110 and F.111, the term Maritime Mobile Service is intended to include also the Maritime Mobile-Satellite Service. + +- a) figure-shift, or (if permanently fitted) letter-shift; +- b) carriage-return; +- c) line-feed; +- d) the ship station's number, or (if a letter-shift is fitted in the first position) figure-shift followed by the ship station's number; +- e) letter-shift; +- f) space, which should however be omitted if both the ship station's number consists of 8 digits and a letter-shift is fitted in the first position; +- g) the ship's (abbreviated) name; +- h) space; +- i) if necessary, a letter-shift or letter-shifts to bring the total number of combinations in the answer-back code up to twenty; +- j) the letter X; +- k) letter-shift (if permanently fitted). + +5 The technical requirements for answer-back generators are laid down in Recommendation S.6. + +6 In accordance with Recommendation S.6, it is preferred that teleprinters having all 20 positions in the answer-back which are freely assignable should be used in the future, i.e. where the first position is a figure-shift and the last the letter X. In the meantime, teleprinters that have a letter-shift permanently fitted in the first and last positions of the answer-back code may be used where the ship station's number does not exceed 8 digits. \ No newline at end of file diff --git a/marked/F/T-REC-F.131-198811-I_PDF-E/raw.md b/marked/F/T-REC-F.131-198811-I_PDF-E/raw.md new file mode 100644 index 0000000000000000000000000000000000000000..efe7ac505d645aab95bcf9c5d1e682aec1e17855 --- /dev/null +++ b/marked/F/T-REC-F.131-198811-I_PDF-E/raw.md @@ -0,0 +1,69 @@ + + +![ITU logo](2dfa6ac3edfe874f68aa0cbccaa42322_img.jpg) + +The logo of the International Telecommunication Union (ITU) features the letters 'ITU' in a bold, sans-serif font, superimposed on a stylized globe with intersecting lines. + +ITU logo + +INTERNATIONAL TELECOMMUNICATION UNION + +**ITU-T** + +**F.131** + +TELECOMMUNICATION +STANDARDIZATION SECTOR +OF ITU + +**OPERATIONS AND QUALITY OF SERVICE +MOBILE SERVICE** + +--- + +**RADIOTELEX SERVICE CODES** + +**ITU-T Recommendation F.131** + +(Extract from the *Blue Book*) + +--- + +# NOTES + +1 ITU-T Recommendation F.131 was published in Fascicle II.4 of the *Blue Book*. This file is an extract from the *Blue Book*. While the presentation and layout of the text might be slightly different from the *Blue Book* version, the contents of the file are identical to the *Blue Book* version and copyright conditions remain unchanged (see below). + +2 In this Recommendation, the expression “Administration” is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. + +# **RADIOTELEX SERVICE CODES** + +The CCITT, + +*considering* + +(a) that it is technically feasible to interconnect certain radiocommunication systems in the Maritime Mobile Service and the Maritime Mobile-Satellite Service with the international telex network in order to provide a radiotelex service between ships and telex subscribers in accordance with Recommendation F. 110; + +(b) that Recommendation F.60 specifies the code expressions used for service correspondence in the international telex service; + +(c) that whilst it is desirable for the same service code expressions to be used in the radiotelex service as in the international telex service, because of the nature of the service the reasons for the uses of these codes may vary; + +(d) that agreement as to the circumstances when specific codes are used is desirable, + +*recommends the following* + +(1) In general for shore-to-ship calls the telex service codes specified in Recommendation F.60 should be used. However, the telex service codes listed below should be used by the radiotelex service in the following circumstances: + +- ABS** – *Absent subscriber/office closed* (to be used when radio contact cannot be established, i.e. radio equipment is faulty, the ship is outside the coverage area or the terminal is turned off); +- DER** – *Out of order* (to be used when the radio path and associated handshaking procedure is accomplished normally but the teleprinter fails to respond to the **WRU** signals); +- NC** – *No circuits* (to be used when congestion occurs in either the network or switching equipment); +- NP** – *The called party is not or is no longer a subscriber* (to be used when the ship number received is invalid); +- NA** – *Correspondence with this subscriber is not admitted* (to be used if the ship's number is barred or if unauthorized group calls are attempted); +- OCC** – *Subscriber engaged* (to be used if the ship station is engaged) + +*Note* – See also Recommendation U.61 [1]. + +(2) For ship-to-shore calls all service codes generated in the international telex service, as specified in Recommendation F.60, should be capable of being returned and presented to the calling ship subscriber. + +# **Reference** + +- [1] CCITT Recommendation *Detailed requirements to be met in interfacing the international telex network with maritime satellite systems*, Recommendation U.61. \ No newline at end of file diff --git a/marked/F/T-REC-F.19-199610-I_PDF-E/raw.md b/marked/F/T-REC-F.19-199610-I_PDF-E/raw.md new file mode 100644 index 0000000000000000000000000000000000000000..86c318b0e68c1261632069773bcd3f1aae098ee5 --- /dev/null +++ b/marked/F/T-REC-F.19-199610-I_PDF-E/raw.md @@ -0,0 +1,199 @@ + + +![ITU logo](2dfa6ac3edfe874f68aa0cbccaa42322_img.jpg) + +The logo of the International Telecommunication Union (ITU) features the letters 'ITU' in a bold, sans-serif font, superimposed on a stylized globe with intersecting lines. + +ITU logo + +INTERNATIONAL TELECOMMUNICATION UNION + +**ITU-T** + +TELECOMMUNICATION +STANDARDIZATION SECTOR +OF ITU + +**F.19** + +(10/1996) + +**SERIES F: NON-TELEPHONE TELECOMMUNICATION +SERVICES** + +Telegraph service – Operating methods for the +international public telegram service + +--- + +**Collection and dissemination of official service +information** + +ITU-T Recommendation F.19 + +--- + +# ITU-T F-SERIES RECOMMENDATIONS **NON-TELEPHONE TELECOMMUNICATION SERVICES** + +| | | +|------------------------------------------------------------------------|-----------------| +| TELEGRAPH SERVICE | | +| Operating methods for the international public telegram service | F.1–F.19 | +| The gentex network | F.20–F.29 | +| Message switching | F.30–F.39 | +| The international telemessage service | F.40–F.58 | +| The international telex service | F.59–F.89 | +| Statistics and publications on international telegraph services | F.90–F.99 | +| Scheduled and leased communication services | F.100–F.104 | +| Phototelegraph service | F.105–F.109 | +| MOBILE SERVICE | | +| Mobile services and multdestination satellite services | F.110–F.159 | +| TELEMATIC SERVICES | | +| Public facsimile service | F.160–F.199 | +| Teletex service | F.200–F.299 | +| Videotex service | F.300–F.349 | +| General provisions for telematic services | F.350–F.399 | +| MESSAGE HANDLING SERVICES | | +| DIRECTORY SERVICES | | +| DOCUMENT COMMUNICATION | | +| Document communication | F.550–F.579 | +| Programming communication interfaces | F.580–F.599 | +| DATA TRANSMISSION SERVICES | | +| AUDIOVISUAL SERVICES | | +| ISDN SERVICES | | +| UNIVERSAL PERSONAL TELECOMMUNICATION | | +| HUMAN FACTORS | | + +*For further details, please refer to the list of ITU-T Recommendations.* + +## **ITU-T Recommendation F.19** + +## **COLLECTION AND DISSEMINATION OF OFFICIAL SERVICE INFORMATION** + +### **Source** + +ITU-T Recommendation C.2 was revised by ITU-T Study Group 1 (1993-1996) and approved by WTSC on 18 October 1996. It was then renumbered by ITU-T Study Group 2 (2001-2004) as F.19 on 25 January 2002 without further modifications. + +## FOREWORD + +The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications. The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of ITU. ITU-T is responsible for studying technical, operating and tariff questions and issuing Recommendations on them with a view to standardizing telecommunications on a worldwide basis. + +The World Telecommunication Standardization Conference (WTSC), which meets every four years, establishes the topics for study by the ITU-T study groups which, in turn, produce Recommendations on these topics. + +The approval of ITU-T Recommendations is covered by the procedure laid down in WTSC Resolution 1. + +In some areas of information technology which fall within ITU-T's purview, the necessary standards are prepared on a collaborative basis with ISO and IEC. + +### NOTE + +In this Recommendation, the expression "Administration" is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. + +### INTELLECTUAL PROPERTY RIGHTS + +ITU draws attention to the possibility that the practice or implementation of this Recommendation may involve the use of a claimed Intellectual Property Right. ITU takes no position concerning the evidence, validity or applicability of claimed Intellectual Property Rights, whether asserted by ITU members or others outside of the Recommendation development process. + +As of the date of approval of this Recommendation, ITU had not received notice of intellectual property, protected by patents, which may be required to implement this Recommendation. However, implementors are cautioned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent database. + +© ITU 2002 + +All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. + +### CONTENTS + +| | Page | +|--------------------------------------------------------------------|------| +| 1 Service information requirements ..... | 1 | +| 2 Collection of data for official service information ..... | 2 | +| 3 TSB administrative support..... | 2 | + + + +## **COLLECTION AND DISSEMINATION OF OFFICIAL SERVICE INFORMATION** + +*(Approved as ITU-T C.2 in Helsinki, 1993; revised in Geneva, 1996, renumbered as F.19 in 2002)* + +The ITU-T, + +*considering* + +- a) Article 1 of the *Constitution* (Geneva, 1992) and Article 15 of the *Convention* (Geneva, 1992); +- b) Article 8 of the *International Telecommunication Regulations* (Melbourne, 1988); +- c) Resolution 21 adopted by the World Telecommunication Standardization Conference (Helsinki, 1993) and the results of the ITU-T studies undertaken pursuant to that Resolution; +- d) Resolutions 39, 65 and 66 adopted by the Plenipotentiary Conference of the International Telecommunication Union (Kyoto, 1994), + +*recognizing* + +- a) that the TSB's collection and dissemination of official service information of an administrative, operational, tariff and statistical nature (hereinafter referred to as *official service information*) assists Administrations and ROAs in their efficient administration and provision respectively of international telecommunication services; +- b) that the *ITU Operational Bulletin* has provided an effective method of promulgating much of this type of information; +- c) that the decision for the ITU-T to collect and to disseminate official service information should be taken with a view to cost-effectiveness as regards the burden both: + - on Administrations and ROAs in providing the information; and + - on the TSB in the preparation and dissemination of that information; +- d) that ROAs also exchange information of an operational nature directly among themselves, and that in some cases (e.g. where many ROAs are affected) some standardization of the content and/or format of the information exchanged may be desirable, + +*recommends* + +that the following general principles should be applied regarding the collection and dissemination of service information, particularly the *official service information* disseminated by the TSB. + +### **1 Service information requirements** + +**1.1** Whenever a Study Group identifies a new requirement (or the need for a major change in the existing arrangements) for collection and dissemination of service information: + +- a) it should consider whether the relevant ROAs (and/or Administrations) should communicate such service information among themselves directly; or +- b) if ITU involvement is desired, the Director of the TSB shall be consulted concerning the justification for that involvement, taking into account the perceived market needs, ITU budget considerations, and any other ITU administrative implications before proceeding. + +**1.2** In cases a) and b), the requirement should be laid down within ITU-T Recommendations. The relevant Recommendation should specify unambiguously and at least in general terms the nature of the different types of information required. Where appropriate, it may also specify the format, periodicity, entry into effect, and/or procedures for updating the relevant service information. + +**1.3** In case a), the information exchanged is not regarded as *official* service information. Nevertheless, in some cases it may be appropriate to specify that each source ROA (or Administration) should supply a copy of the information or a summary of it to the TSB. + +1.4 Each Study Group responsible for the maintenance of such Recommendations shall review the relevant provisions at least once towards the end of each period between two WTSCs. + +### 2 Collection of data for *official* service information + +2.1 The Director of the TSB should request Administrations and/or ROAs to supply official service information, or any changes to previously supplied information, for dissemination in accordance with the provisions of the relevant Recommendations. The form of the request should be designed to minimize the effort required of the Administrations and/or ROAs in providing the information requested. + +2.2 Administrations (and/or ROAs) should reply to such requests for information, to the extent practicable, in a timely fashion and in accordance with national arrangements, taking due account of the confidentiality of possibly commercially sensitive information. + +2.3 Upon receipt of a request for official service information, Administrations may elect (on a *case-by-case* basis or an *until-further-notice* basis), in accordance with national practice, to make arrangements to collate replies from their ROAs. Any Administration exercising such election shall notify the Director of the TSB. Absent such election and notification, the TSB should expect individual replies from the ROAs. In processing the individual replies, the TSB shall consider them as emanating from an ROA duly authorized by the relevant Member (or its Administration) to offer the relevant telecommunication service(s) to which the request for information pertains. + +### 3 TSB administrative support + +3.1 The Director of the TSB provides advice and support to the various Study Groups responsible for the Recommendations requiring the collection and dissemination of official service information, in particular as outlined in 1.1, 2.1 and 2.3 above. + +3.2 In addition, and in view of the responsibilities vested in his office, the Director makes suitable arrangements: + +- a) to establish and to keep up to date, for each Study Group, a list of those Recommendations that require the collection and dissemination of official service information; +- b) to submit such a list to each Study Group concerned on request, and in any case at least twelve months prior to a WTSC, for possible revision (amendments, additions and/or deletions) in the light of operational experience; +- c) to ensure that the method of disseminating official service information reflects technical developments in the means of collecting and exchanging such information and that the most appropriate and economic solutions are adopted, while taking due account of the needs of countries where electronic access to ITU databases, for example, is not yet available; +- d) to establish and to keep up to date on the basis of the responses returned, a list of the relevant service and/or network providers that have provided the official service information and whether their status is that of an Administration, ROA or other entity. + + + +## SERIES OF ITU-T RECOMMENDATIONS + +| | | +|-----------------|--------------------------------------------------------------------------------------------------------------------------------| +| Series A | Organization of the work of ITU-T | +| Series B | Means of expression: definitions, symbols, classification | +| Series C | General telecommunication statistics | +| Series D | General tariff principles | +| Series E | Overall network operation, telephone service, service operation and human factors | +| Series F | Non-telephone telecommunication services | +| Series G | Transmission systems and media, digital systems and networks | +| Series H | Audiovisual and multimedia systems | +| Series I | Integrated services digital network | +| Series J | Cable networks and transmission of television, sound programme and other multimedia signals | +| Series K | Protection against interference | +| Series L | Construction, installation and protection of cables and other elements of outside plant | +| Series M | TMN and network maintenance: international transmission systems, telephone circuits, telegraphy, facsimile and leased circuits | +| Series N | Maintenance: international sound programme and television transmission circuits | +| Series O | Specifications of measuring equipment | +| Series P | Telephone transmission quality, telephone installations, local line networks | +| Series Q | Switching and signalling | +| Series R | Telegraph transmission | +| Series S | Telegraph services terminal equipment | +| Series T | Terminals for telematic services | +| Series U | Telegraph switching | +| Series V | Data communication over the telephone network | +| Series X | Data networks and open system communications | +| Series Y | Global information infrastructure and Internet protocol aspects | +| Series Z | Languages and general software aspects for telecommunication systems | \ No newline at end of file diff --git a/marked/F/T-REC-F.190-199208-I_PDF-E/raw.md b/marked/F/T-REC-F.190-199208-I_PDF-E/raw.md new file mode 100644 index 0000000000000000000000000000000000000000..c427e7830af3cd47b8e573b1652becbcf052ad25 --- /dev/null +++ b/marked/F/T-REC-F.190-199208-I_PDF-E/raw.md @@ -0,0 +1,172 @@ + + +![ITU logo: A globe with a lightning bolt and the letters ITU.](2dfa6ac3edfe874f68aa0cbccaa42322_img.jpg) + +ITU logo: A globe with a lightning bolt and the letters ITU. + +INTERNATIONAL TELECOMMUNICATION UNION + +**CCITT** + +**F.190** + +THE INTERNATIONAL +TELEGRAPH AND TELEPHONE +CONSULTATIVE COMMITTEE + +(08/92) + +**TELEMATIC, DATA TRANSMISSION, +ISDN BROADBAND, UPT +AND TELECONFERENCE SERVICES: +OPERATIONS AND QUALITY OF SERVICE** + +--- + +**OPERATIONAL PROVISIONS FOR THE +INTERNATIONAL FACSIMILE SERVICE +BETWEEN PUBLIC BUREAUX AND +SUBSCRIBER STATIONS AND VICE VERSA +(BUREAUFAX-TELEFAX AND VICE VERSA)** + +**Recommendation F.190** + +--- + +![CCITT logo: A globe with the letters CCITT.](84a1d09fb489061482111515543b60dc_img.jpg) + +CCITT logo: A globe with the letters CCITT. + +Geneva, 1992 + +# FOREWORD + +The CCITT (the International Telegraph and Telephone Consultative Committee) is a permanent organ of the International Telecommunication Union (ITU). CCITT is responsible for studying technical, operating and tariff questions and issuing Recommendations on them with a view to standardizing telecommunications on a worldwide basis. + +The Plenary Assembly of CCITT which meets every four years, establishes the topics for study and approves Recommendations prepared by its Study Groups. The approval of Recommendations by the members of CCITT between Plenary Assemblies is covered by the procedure laid down in CCITT Resolution No. 2 (Melbourne, 1988). + +Recommendation F.190 was revised by Study Group I and was approved under the Resolution No. 2 procedure on the 4th of August 1992. + +## --- CCITT NOTE + +In this Recommendation, the expression "Administration" is used for conciseness to indicate both a telecommunication administration and a recognized private operating agency. + + + +## Recommendation F.190 + +## OPERATIONAL PROVISIONS FOR THE INTERNATIONAL FACSIMILE SERVICE BETWEEN PUBLIC BUREAUX1) AND SUBSCRIBER STATIONS AND VICE VERSA (BUREAUFAX-TELEFAX AND VICE VERSA) + +*(revised 1992)* + +### 1 General + +1.1 Recommendation F.160 lays down general provisions for all forms of international public facsimile services. The specific provisions concerning international public facsimile service between public bureaux (bureaufax) and between subscriber stations are contained in Recommendations F.170, F.171, F.180, F.182 and F.184. + +1.2 With a view of increasing the flexibility and range of these facsimile services, this Recommendation deals with the international transmission of facsimile documents: + +- a) from a public bureau to a subscriber facsimile station (public-to-private); and +- b) from a subscriber facsimile station to a public bureau (private-to-public). + +1.3 Since the methods of operation do not involve the participation of a public bureau at both ends of the connection, the quality of reproduction and speed of delivery normally available in the conventional bureaufax service may not be attainable. + +1.4 In accordance with Recommendation F.170, facsimile terminals should have automatic operation of the called station. The operational procedures applicable in relations between the different types of stations are set out in the relevant Recommendations in the T-Series. + +1.5 The relevant tariff provisions may be found in Recommendation D.73. + +### 2 “Public-to-private” transmission + +2.1 Except where contrary provisions are published by the terminal Administrations concerned, “public-to-private” facsimile transmission is permitted. + +2.2 The accepting public bureau should ask the sender of the document or his authorized representative for the following information before accepting the document for transmission: + +- a) the CCITT group of the destination subscriber's facsimile terminal; +- b) the destination facsimile terminal call number. + +On accepting the facsimile document, the public bureau can use, if appropriate, the bureaufax transmittal sheet in accordance with Recommendation F.170 and provide the necessary information in the corresponding boxes. + +2.3 In those cases where: + +- a) the accepting public bureau considers that the quality of the document to be transmitted is unsuitable for satisfactory facsimile transmission; or +- b) the sender is unsure of the CCITT group of the destination facsimile machine, + +--- + +1) Public bureaux may be offices of telecommunication or of postal administrations. + +the document will be sent only if the sender accepts the possible risk of non-delivery or of unsatisfactory quality on reception. In effect, the same provisions apply as for **RISQUES EXPEDITEUR** in the bureaufax service (see Recommendation F.170). If b) above applies, or if, after several attempts within a maximum duration of 3 hours from the time of acceptance of the facsimile document, the destination subscriber facsimile terminal cannot be reached, the sender should be given the option of transmission by means of the normal bureaufax service (where available) in accordance with Recommendation F.170, at the tariffs applicable to that service. + +*Note* – During an interim period for gaining the greatest possible operational experience, the Administrations should apply the same procedure if they know that the receiving facsimile machine operates automatically. + +### 3 “Private-to-public” transmission + +3.1 Except where contrary provisions are published by the terminal Administrations concerned, “private-to-public” facsimile transmission is permitted. + +3.2 Facsimile documents received by a public bureau from a subscriber station in another country are handled and delivered to the addressee in accordance with appropriate methods laid down by the destination Administration. The provisions of Recommendations F.170, §§ 6.1, 6.3, 6.4 and 6.5 may be applied. + +3.3 The sending subscriber shall provide the receiving public bureau with sufficient information for processing his facsimile documents; to that end the subscriber should use a transmittal sheet in accordance with Figure 1/F.190. Administrations should encourage the use of such forms by informing subscribers of their availability. The sending subscriber may insert his logo, company name, etc., in free spaces on the transmittal sheet. + +3.4 If the sending subscriber does not use a transmittal sheet as in § 3.3, he shall provide the receiving public bureau with at least the following information: + +- a) the call number of his facsimile terminal; +- b) the number of pages of the document, in accordance with Recommendation F.170, § 3.2.1, item 4); +- c) the addressee's address, in accordance with Recommendation F.170, § 3.2.1, item 8), as well as the addressee's telephone, telex or teletex numbers if necessary. + +It is advisable for the sending subscriber also to give his address, in accordance with Recommendation F.170, § 3.2.1, item 9). + +3.5 On receipt of the facsimile document, the receiving bureau should contact the addressee in order to reach agreement on the mode of delivery and the charging. + +3.6 The receiving bureau may contact the sending subscriber if the copy received is of unsatisfactory quality. + +3.7 In the event of non-delivery owing to incomplete address information or for other reasons (e.g., when the receiving bureau cannot establish contact with the addressee even though the address is complete, or when the document is not collected by the addressee), the receiving bureau may contact the sending subscriber. The facsimile document received and/or other relevant information, should be kept on file in accordance with the national regulations in force. + +![Diagram of a transmittal sheet for a private-to-public telefacsimile transmission. The sheet is divided into several boxes for sender and addressee information. Dimensions are given in mm: total height 148, total width 210 (80 + 10 + 90 + 15). Box heights from top to bottom are 45, 15, 42, and 15 mm. The top section contains 'PRIVATE ® PUBLIC' and transmission details. Boxes 1-5 are for sender's telefax, document number, page count, transmission date, and receipt date. Box 6 is for delivery mode instructions. Box 7 is for the addressee's address, and box 8 is for the sender's address.](547f726730e589392f239257a833ede3_img.jpg) + +PRIVATE ® PUBLIC + +Transmission from a subscriber station to a public bureau + +A charge may be collected from the addressee + +| | | +|--------------------------------------------------------------------|-------------------------------| +| 1. Sender's telefax No. | 2. Document number | +| 3. No. of pages | 4. Date of transmission | +| | 5. Date (and time) of receipt | +| 6. Delivery mode and service instructions | | +| 7. Addressee's address (including postal code) | | +| 8. Sender's address (including postal code) | | + +Dimensions: 148 (height), 210 a) (width: 80 + 10 + 90 + 15). Box heights: 45, 15, 42, 15. + +T0102690-92 + +Diagram of a transmittal sheet for a private-to-public telefacsimile transmission. The sheet is divided into several boxes for sender and addressee information. Dimensions are given in mm: total height 148, total width 210 (80 + 10 + 90 + 15). Box heights from top to bottom are 45, 15, 42, and 15 mm. The top section contains 'PRIVATE ® PUBLIC' and transmission details. Boxes 1-5 are for sender's telefax, document number, page count, transmission date, and receipt date. Box 6 is for delivery mode instructions. Box 7 is for the addressee's address, and box 8 is for the sender's address. + +a) North American standard: 216 mm. + +Note 1 – Boxes 2, 5 and 6 are to be filled in by the receiving public bureau. + +Note 2 – The information in box 8 (sender) is optional. When given, it must appear in the left-hand part of the transmittal sheet. + +Note 3 – The addressee's address should include the telephone, telex or teletex number if necessary. + +Note 4 – The number of pages given in box 3 must be in accordance with Recommendation F.170, § 3.2.1, item 4). + +Note 5 – Concerning box 6, the following delivery modes may be requested by the addressee, in so far as they are offered by the destination Administration (for definitions, see Annex A to Recommendation F.170): + +| | | | +|----------|-----------------------------------------------------------------------|----------------------------------------------------------------| +| A | Ordinary mail | Courrier ordinaire | +| B | Special delivery | Porteur spécial | +| C | EMS (express mail service) | EMS (service de courrier exprès) | +| D | Counter collection | Retrait au guichet | +| E | Counter collection with telephone advice to the indicated call number | Retrait au guichet avec avis téléphonique au numéro indiqué | +| F | Telefax (with call number and CCITT group when known) | Téléfax (avec numéro d'appel et, s'il est connu, groupe CCITT) | +| G | Counter collection with telex advice to the indicated call number | Retrait au guichet avec avis télex au numéro indiqué | +| H | Counter collection with teletex advice to the indicated call number | Retrait au guichet avec avis télétex au numéro indiqué | + +Other modes of delivery may be offered by the destination Administration. + +FIGURE 1/F.190 +**Measurements, locations and designations of the various parts of the transmittal sheet in accordance with § 3.3** \ No newline at end of file diff --git a/marked/F/T-REC-F.401-199208-I_PDF-E/raw.md b/marked/F/T-REC-F.401-199208-I_PDF-E/raw.md new file mode 100644 index 0000000000000000000000000000000000000000..56b4527205e637c02bbf42fea0175a8e57a33725 --- /dev/null +++ b/marked/F/T-REC-F.401-199208-I_PDF-E/raw.md @@ -0,0 +1,900 @@ + + +![ITU logo: A globe with the letters ITU and a lightning bolt.](2dfa6ac3edfe874f68aa0cbccaa42322_img.jpg) + +ITU logo: A globe with the letters ITU and a lightning bolt. + +INTERNATIONAL TELECOMMUNICATION UNION + +**CCITT** + +**F.401** + +THE INTERNATIONAL +TELEGRAPH AND TELEPHONE +CONSULTATIVE COMMITTEE + +(08/92) + +**MESSAGE HANDLING SERVICES** + +**OPERATIONS AND DEFINITION OF SERVICE** + +--- + +**MESSAGE HANDLING SERVICES: +NAMING AND ADDRESSING FOR PUBLIC +MESSAGE HANDLING SERVICES** + +![CCITT logo: A globe with the letters CCITT.](84a1d09fb489061482111515543b60dc_img.jpg) + +CCITT logo: A globe with the letters CCITT. + +**Recommendation F.401** + +--- + +# FOREWORD + +The CCITT (the International Telegraph and Telephone Consultative Committee) is a permanent organ of the International Telecommunication Union (ITU). CCITT is responsible for studying technical, operating and tariff questions and issuing Recommendations on them with a view to standardizing telecommunications on a worldwide basis. + +The Plenary Assembly of CCITT which meets every four years, establishes the topics for study and approves Recommendations prepared by its Study Groups. The approval of Recommendations by the members of CCITT between Plenary Assemblies is covered by the procedure laid down in CCITT Resolution No. 2 (Melbourne, 1988). + +Recommendation F.401 was revised by Study Group I and was approved under the Resolution No. 2 procedure on the 4th of August 1992. + +# --- CCITT NOTE + +In this Recommendation, the expression "Administration" is used for conciseness to indicate both a telecommunication administration and a recognized private operating agency. + +# **MESSAGE HANDLING SERVICES: NAMING AND ADDRESSING FOR PUBLIC MESSAGE HANDLING SERVICES** + +*(revised, 1992)* + +# **CONTENTS** + +# *Introduction* + +- 1 *Scope* +- 2 *References* +- 3 *Definitions* +- 4 *Abbreviations* +- 5 *Conventions* +- 6 *Naming and addressing in message handling* + - 6.1 O/R addresses + - 6.2 Distribution list names + - 6.3 Directory names +- 7 *Length of attributes* +- 8 *Principles for the allocation of O/R names and O/R addresses* +- 9 *Use of O/R names* + - 9.1 General + - 9.2 Character repertoires + - 9.3 Specific rules + - 9.4 Support of forms of O/R addresses + +*Annex A – List of alpha-2 country codes* + +*Annex B – Representation of O/R addresses for human usage* + +*Annex C – Format for notification of ADMD names* + +# **Introduction** + +The establishment in various countries of message handling services in association with public networks creates the need to produce Recommendations covering the aspects of public message handling services. Naming and addressing is a key area for the application and the provision of public message handling services on a global scale. + +# 1 Scope + +This Recommendation specifies naming and addressing aspects for public message handling services which are described in other Recommendations of the F-Series. It also establishes some principles for the allocation of originator/recipient O/R addresses. + +# 2 References + +- CCITT Rec. E.164, *Numbering plan for the ISDN era*, 1991. +- CCITT Rec. F.400, *Message handling services: Message handling system and service overview*, 1992. +- CCITT Rec. F.410, *Message handling services: The public message transfer service*, 1992. +- CCITT Rec. F.415, *Message handling services: Intercommunication with public physical delivery services*, 1988. +- CCITT Rec. F.420, *Message handling services: The public interpersonal messaging service*, 1992. +- CCITT Rec. F.421, *Message handling services: Intercommunication between the IPM service and the telex service*, 1988. +- CCITT Rec. F.422, *Message handling services: Intercommunication between the IPM service and the teletex service*, 1988. +- CCITT Rec. F.423, *Message handling services: Intercommunication between the IPM service and telefax services*, 1992. +- CCITT Rec. F.435, *Message handling services: electronic data interchange messaging service*, 1991. +- CCITT Rec. F.440, *Message handling services: The voice messaging service*, 1992. +- CCITT Rec. F.500, *International public directory services*, 1992. +- CCITT Rec. T.61 (1992), *Character repertoire and coded character sets for the international teletex service*, 1988. +- CCITT Rec. X.121, *International numbering plan for public data networks*, 1992. +- Other CCITT Recs. of the X.400-Series (1993), *Message handling systems*, 1993. +- CCITT Rec. X.402, *Message handling systems: Overall architecture*, 1993. +- CCITT Recs. of the X.500-Series, *Directory systems*, 1992. +- CCITT Rec. X.6601), *Procedures for the operation of OSI registration authorities: General procedures*. +- ISO 3166 (1988) (plus amendments), *Codes for the representation of names of countries*, 1988. + +# 3 Definitions + +For the purposes of this Recommendation the definitions given in Recommendation F.400 apply. See also Annex A of Recommendation F.400. + +# 4 Abbreviations + +| | | +|------|----------------------------------| +| ADMD | Administration management domain | +| DCC | Data country code | +| DDA | Domain defined attribute | +| DL | Distribution list | + +--- + +1) Presently at the stage of draft. + +| | | +|------|----------------------------------------| +| IA5 | International Alphabet No. 5 | +| IPM | Interpersonal messaging | +| ITA2 | International Telegraph Alphabet No. 2 | +| MD | Management domain | +| MH | Message handling | +| MHE | Message handling environment | +| MHS | Message handling system | +| MT | Message transfer | +| O/R | Originator/recipient | +| OU | Organizational unit | +| PO | Post office | +| PD | Physical delivery | +| PRMD | Private management domain | +| PSAP | Presentation service access point | +| RPOA | Recognized private operating agency | +| UPU | Universal Postal Union | + +Abbreviations and labels used in Annex B are explained in the annex itself. + +# 5 Conventions + +In this Recommendation the expression “Administration” is used for shortness to indicate a telecommunication Administration, a recognized private operating agency (RPOA), and, in the case of intercommunication with public physical delivery service, a postal Administration. + +# 6 Naming and addressing in message handling + +Naming and addressing in message handling have to ensure that users can define the source and the destination of messages in an unambiguous way. The organizational mapping of message handling systems, and the structure of management domains (see Recommendation F.400), together with a set of naming conventions, are the means to establish a uniform and compatible environment for the exchange of messages between any users of the message handling environment. Only those attributes need appear in an O/R address that are required to reach a recipient. + +Names and addresses are allocated by the responsible naming authority. These authorities are asked to notify the Director of the CCITT of the names of their ADMDs and of some additional information (name and address of the public service provider, name of the services, etc.) for subsequent publication in the ITU *Operational Bulletin* (see Annex C for the format of the notification and also Recommendation X.660). + +In message handling systems (MHS), the principal entity that requires naming is the user (the originator and the recipient of messages). In addition, distribution lists (DLs) have names for their own identification and use in the context of MHS. Users of MHS and DLs are identified by O/R names. (The prefix “O/R” recognizes the fact that the user can be acting as either the originator or the recipient of a message.) An O/R name comprises a directory name, an O/R address or both. Every user or DL has one or more O/R names. + +## 6.1 O/R addresses + +An O/R address contains information that enables the MHS to identify a user in order to deliver a message or return a notification. DLs are also identified by an O/R address. + +An O/R address is comprised of a set of information called attributes. Recommendation X.402 specifies a set of standard attributes from which O/R addresses can be constructed. Standard attributes, the structure of attribute lists + +and their syntax and semantics are defined in Recommendation X.402. In addition to standard attributes, and so as to cater for existing messaging systems, there are domain defined attributes whose syntax and semantics are specified by management domains. They are applicable for an interim period. + +Various forms of O/R addresses are defined, each serving its own purpose. These forms and their purpose are as follows: + +- *Mnemonic O/R address*: Provides a user friendly means of identifying users in the absence of a directory. It may also be used for identifying a distribution list. +- *Terminal O/R address*: Provides a means of identifying users with terminals belonging to various networks. +- *Numeric O/R address*: Provides a means of identifying users with numeric keypads. +- *Postal O/R address*: Provides a means of identifying originators and recipients of messages and notifications, for physical delivery. + +It is up to the management domain concerned to decide which name forms it wants to use. Corresponding parties should be made aware of the applicable name space (i.e. the repertoire of names). + +### 6.1.1 *Mnemonic O/R address* + +This form of O/R address provides addresses that mnemonically identifies a user or a DL relative to the administration management domain (ADMD) through which the user is accessed. At least one of the conditional attributes following the domain name(s) has to be present. A PRMD name is present only if the user concerned belongs to that domain. If an organizational unit is present, the organization name has to be present as well. + +The mnemonic O/R address consists of: + +- Country name +- Administration domain name +- [Private domain name] +- [Organization name] +- [Organizational unit name] +- [Personal name] +- [Common name] +- [[Domain defined attributes ]] + +*Note* – Attributes in square brackets are conditional. Double square brackets indicate an attribute not belonging to the standard attribute list and may not be required for global addressing. + +### 6.1.2 *Terminal O/R address* + +This form of O/R address provides a means for addressing a terminal with its network address, conditionally with the country name, the domain name(s), a terminal identifier, the terminal type and domain defined attributes. If an organizational unit is present, the organization name has to be present as well. + +The terminal O/R address consists of: + +- [Country name] +- [Administration domain name] +[Private domain name] +- Network address +- [Terminal identifier] +- [Terminal type] +- [[Domain defined attributes]] +- {Common name} + +- {Organization name} +- {Organizational unit names} +- {personal name} +- {unformatted postal address} + +*Note 1* – Attributes in square brackets are conditional. Double square brackets indicate an attribute not belonging to the standard attribute list and may not be required for global addressing. + +*Note 2* – Domain defined attributes should be present only if the country name and the Administration management domain name are present. + +*Note 3* – Network addresses allocated by a domain need to be unambiguous and thus can only be assigned once. Country name and administration management name attributes have to be present when more than one domain is providing service for the address concerned. + +*Note 4* – Attributes in braces are intended to be used for rendering of the address information (making it visible) on the receiving terminal but not for addressing or routing purposes. + +The network address is composed of digits from the X.121 numbering plan (including escape codes) or the E.164 numbering plan. + +The conditional terminal identifier might be, for example, a telex answerback string or a teletex terminal identifier. + +The conditional terminal type might be, for example, a telex, a teletex, a G3 facsimile, a G4 facsimile, an IA5, or a videotex terminal. + +### 6.1.3 *Numeric O/R address* + +This form of O/R address provides addresses that can be entered from devices equipped only with numeric keypads. It identifies numerically a user relative to the ADM D through which the user is accessed. + +The numeric O/R address consists of: + +- Country name +- Administration domain name +- [Private domain name] +- Numeric user identifier +- [[Domain defined attributes]] + +*Note 1* – Attributes in square brackets are conditional. Double square brackets indicate an attribute not belonging to the standard attribute list and may not be required for global addressing. + +*Note 2* – Numeric values are assumed for all attributes. Countries may be named with DCCs (see Recommendation X.121). An ADM D name would require the allocation of a numeric alias name. + +*Note 3* – This form could also be used for a videotex user number. + +*Note 4* – The numeric user identifier may use a check digit for validation purposes. + +### 6.1.4 *Postal O/R address* + +This form of O/R address provides for the identification of a user by means of his postal address, together with the country name(s), and the domain name(s), and the PD service name through which he is accessed. + +See also Recommendation F.415. + +*Version 1 – Unformatted postal O/R address:* + +- Physical delivery country name +- Country name +- Administration domain name +- [Private domain name] +- [Physical delivery service name] +- Unformatted postal address + +Sufficient address components have to be supplied in the unformatted postal address in order to enable the PD service to route, distribute and deliver the physical message properly. + +*Version 2 – Formatted postal O/R address:* + +- Physical delivery country name +- Country name +- Administration domain name +- [Private domain name] +- [Physical delivery service name] +- Postal code +- Set of formatted postal address attributes + +There is no defined order in the set of formatted postal O/R address attributes. These attributes are: + +- *Postal O/R address components:* + - a) [Physical delivery personal name] + - b) [Physical delivery organization name] +- *Physical delivery address components:* + - a) [Street address] + - b) [P.O. box address] + - c) [Poste restante address] + - d) [Unique postal name] +- *Physical delivery office address components:* + - a) Physical delivery office name + - b) [Physical delivery office number] + - c) [Local postal attributes] +- *Other postal address components:* + - a) [Extension of postal O/R address components] + - b) [Extension of physical delivery address components] + +*Note – Attributes in square brackets are conditional.* + +Sufficient attributes have to be provided in order to enable the PD service to route, distribute and deliver the physical message properly. + +For the description of formatted postal O/R address attributes, see Annex A of Recommendation F.400 and for the length see § 7 of this Recommendation. + +## 6.2 *Distribution list names* + +In the context of message handling, names of distribution lists (making use of the common name attribute) are used to identify the point of expansion of a message using a distribution list, such list containing a set of O/R addresses or further distribution list names. See Recommendation F.400. + +Care should be taken in the choice of distribution list names to ensure that users are aware that they are addressing a distribution list. + +*Note* – For naming of distribution lists, the attribute common name may be used. Names of distribution lists should clearly indicate their purpose. + +## 6.3 *Directory names* + +In the context of message handling, a directory name can be used to retrieve the required O/R address from a directory. See Recommendations F.400 and F.500. The directory may be provided by local functions. + +# 7 **Length of attributes** + +The coding is specified in the Recommendations of the X.400 series. + +The O/R address shall allow the following information: + +## - *Country name* + +The Alpha-2 country code listed in Annex A or the DCC from Recommendation X.121 can be used as the country name. Maximum 3 characters. + +## - *Physical delivery country name* + +The same conditions as for *country name* apply. + +## - *Physical delivery service name* + +Maximum 16 characters. + +## - *Administration domain name* + +Maximum 16 characters. The Numeric O/R address form assumes allocation of numeric country and administration management domain names. + +*Note 1* – If the national option of to use the “space” character for all ADMDs of a country is applied, it should not have any implication on unique global addressing and on routing, accounting or other general international requirements. + +*Note 2* – National use of the characters “space” and “0” as ADMD name attributes may have an impact on international messaging. A domain may define the list of ADMD names or PRMD names it wants to accept, depending: + +- a) on the naming policy applied; and +- b) on commercial considerations. + +Bilateral agreements between domains may be required for the arrangement chosen. + +## - *Private domain name* + +Maximum 16 characters. + +*Note 3* – Global uniqueness of the private domain name attribute can be assured by allocating values relative to the ADMD name. PRMD names may be the same even when they are used in conjunction with more than one ADMD, because the country name attribute makes the O/R addresses using these attributes unique. National practices may provide for allocation of PRMD names relative to the country name attribute (when registration is performed by the ADMD concerned or by a centralized national registration authority). + +## - *Organization name* + +Maximum 64 characters. + +- *Organizational unit(s)* +Maximum 32 characters each. +- *Personal name* +Maximum length is the sum of the maxima of the parts (64 characters). + - a) *Surname* – maximum 40 characters. + - b) *Given name* – maximum 16 characters. + - c) *Initials* (optional) – maximum 5 characters (for further study). + - d) *Generation qualifier* (optional) – maximum 3 characters. +- *Distribution list name* +Maximum length of the *common name* applies. +- *Common name* +Maximum 64 characters. +- *Domain defined attributes* +Maximum four separate attributes. Maximum length for “type” 8 and for “value” 128 characters. +- *Network address* +Maximum 14 + 1 digits, including the prefix (see Recommendation X.121). +*Note* – The classification and maximum value may change to accommodate other addressing schemes. +- *Terminal identifier* +Maximum 24 characters. +- *Numeric user identifier* +Maximum 32 digits. +- *Unformatted postal address (version 1)* +Up to 6 lines with a maximum of 30 characters in each line (see Note). In the case of transit mail, the last line is reserved for the name of the country of the final physical destination. +*Note* – The number of characters specified refers to characters to be printed (including spaces). +- *Formatted postal address (version 2)* +The formatted postal address attributes and their constraints are (for the description of these attributes see Annex A of Recommendation F.400). +- *Postal O/R address components* (see Note 2) +Physical delivery personal name (see Note 3): 30 characters (see Note 1). +Physical delivery organization name (see Note 3): 30 characters (see Note 1). +- *Physical delivery address components* (see Note 2) +Street address: 30 characters (see Note 1). +P.O. box address: 30 characters (see Note 1). +Poste restante address: 30 characters (see Note 1). +Unique postal name: 30 characters (see Note 1). +- *Physical delivery office address components* +Physical delivery office name: x number of characters (see Notes 1 and 4). +Physical delivery office number: y number of characters (see Notes 1 and 4). +Local postal attributes: z number of characters (see Notes 1 and 4). + +- *Other postal address components* + +Extension of O/R address components (see Note 5): 30 characters (see Note 1). + +Extension of physical delivery address components (see Note 6): 30 characters (see Note 1). + +The overall constraints are 6 lines of attributes with a maximum of 30 characters in each line (see Note 1). In the case of transit mail, the last line is reserved for the name of the receiving country of the final physical destination. + +*Note 1* – The number of characters specified refers to characters to be printed (including spaces). + +*Note 2* – At least one of the following attributes should be used. + +*Note 3* – Physical delivery personal name and physical delivery organization name are free form names and have different length from personal name and organization name. + +*Note 4* – These attributes have to be printed in one line, in some countries together with the postal code. Thus $x + y + z$ is a maximum of 30 characters including the delimiting spaces and the postal code if printed on the same line. + +*Note 5* – May be used to extend the postal O/R address components. + +*Note 6* – May be used to extend the physical delivery address components. + +# **8 Principles for the allocation of O/R names and O/R addresses** + +8.1 The naming authority of the country responsible for administration management domain names will ensure the designation of an unambiguous name to each ADMD of message handling services in that country. + +8.2 Each ADMD is responsible for the administration of names of private management domains associated with it. + +*Note* – For PRMDs intercommunicating with more than one ADMD, registration with each ADMD will assure uniqueness of O/R addresses used. National practices may provide for registration on a country level. + +8.3 Each management domain (MD) is responsible for allocating unambiguous addresses to users below the level of the MD name(s) for the purpose of using message handling services. + +8.4 A distribution list shall only be given a name which is clearly indicating to the user its intent. Names or O/R addresses shall only be included in a publicly accessible distribution list when the permission of the owner of the information is given and national rules for security are respected. + +# **9 Use of O/R names** + +## **9.1 *General*** + +With the help of O/R names a user can send messages via the MHS. Users may get support from their user agent in the use of O/R names. The latter is a local matter. + +## **9.2 *Character repertoires*** + +The character repertoire allowed in O/R names are either printable, numeric or teletex repertoires (for more detail see Recommendation X.402). + +The printable character repertoire is shown in Table 1/F.401. + +The numeric character repertoire comprises the digits 0 to 9 and space, and is a subset of the printable character repertoire (see Table 1/F.401). + +For the teletex repertoire see Recommendation T.61. In general the teletex repertoire may also be used internationally. + +The use of an extended character repertoire within a management domain is a local matter. + +TABLE 1/F.401 + +### **Printable character repertoire for O/R names** + +| Designation | Graphic representation | +|-------------------|------------------------| +| Uppercase letters | A, B ..... Z | +| Lowercase letters | a, b ..... z | +| Digits | 0, 1 ..... 9 | +| Space | (space) | +| Apostrophe | ' | +| Left parenthesis | ( | +| Right parenthesis | ) | +| Plus sign | + | +| Comma | , | +| Hyphen | - | +| Full stop | . | +| Solidus | / | +| Colon | : | +| Equals sign | = | +| Question mark | ? | + +*Note* – According to Recommendation X.208, this repertoire is called a printable string type. All these characters are available in ITA2 (as far as letters are concerned, only in uppercase or lowercase). + +## 9.3 *Specific rules* + +Rules for postal O/R addresses, see §§ 2 and 3 and Recommendation F.415. + +Management domains will not allow O/R names, that differ only by the number of “space” characters, either at the beginning or the end of any of their attributes, to identify different users. + +Additionally MDs will consider the occurrence of contiguous space characters in an O/R address attribute value to be the same as a single space character. + +MDs will not allow O/R names, that differ only by small letter/capital letter distinctions, to identify different users. + +## 9.4 *Support of forms of O/R addresses* + +Each MHS shall support all the name address forms in the incoming direction for transmitting purposes. It is the decision of the management of a domain which name forms are allocated to the users of that domain. In the outgoing direction the originating domain needs to use the name forms the destination domain applies. The way in which names are inputted by, or presented to, the subscriber is a local matter. + +# ANNEX A (to Recommendation F.401) + +(This annex does not form an integral part of this Recommendation) + +## **List of Alpha-2 country codes** + +*Note* – Source: ISO 3166. Current edition (1988) at time of printing. The latest published edition from ISO should be applied. + +| | | | | +|--------------------------------|----|------------------------------|----| +| Afghanistan | AF | Comoros | KM | +| Albania | AL | Congo | CG | +| Algeria | DZ | Cook Islands | CK | +| American Samoa | AS | Costa Rica | CR | +| Andorra | AD | Côte d'Ivoire | CI | +| Angola | AO | Cuba | CU | +| Anguilla | AI | Cyprus | CY | +| Antarctica | AQ | Czechoslovakia | CS | +| Antigua and Barbuda | AG | | | +| Argentina | AR | Denmark | DK | +| Aruba | AW | Djibouti | DJ | +| Australia | AU | Dominica | DM | +| Austria | AT | Dominican Republic | DO | +| | | | | +| Bahamas | BS | East Timor | TP | +| Bahrain | BH | Ecuador | EC | +| Bangladesh | BD | Egypt | EG | +| Barbados | BB | El Salvador | SV | +| Belgium | BE | Equatorial Guinea | GQ | +| Belize | BZ | Ethiopia | ET | +| Benin | BJ | | | +| Bermuda | BM | Falkland Islands (Malvinas) | FK | +| Bhutan | BT | Faeroe Islands | FO | +| Bolivia | BO | Fiji | FJ | +| Botswana | BW | Finland | FI | +| Bouvet Island | BV | France | FR | +| Brazil | BR | French Guiana | GF | +| British Indian Ocean Territory | IO | French Polynesia | PF | +| British Virgin Islands | VG | French Southern Territories | TF | +| Brunei Darussalam | BN | | | +| Bulgaria | BG | Gabon | GA | +| Burkina Faso | BF | Gambia | GM | +| Burma | BU | Germany, Federal Republic of | DE | +| Burundi | BI | Ghana | GH | +| Byelorussian SR | BY | Gibraltar | GI | +| | | Greece | GR | +| Cameroon | CM | Greenland | GL | +| Canada | CA | Grenada | GD | +| Cape Verde | CV | Guadeloupe | GP | +| Cayman Islands | KY | Guam | GU | +| Central African Republic | CF | Guatemala | GT | +| Chad | TD | Guinea | GN | +| Chile | CL | Guinea-Bissau | GW | +| China | CN | Guyana | GY | +| Christmas Islands | CX | | | +| Cocos (Keeling) Islands | CC | Haiti | HT | +| Colombia | CO | Heard and Mc Donald Islands | HM | + +| | | | | +|-----------------------------------------------|----|----------------------------------|----| +| Honduras | HN | Nigeria | NG | +| Hong Kong | HK | Niue | NU | +| Hungary | HU | Norfolk Island | NF | +| | | Northern Mariana Islands | MP | +| Iceland | IS | Norway | NO | +| India | IN | | | +| Indonesia | ID | Oman | OM | +| Iran, Islamic Republic of | IR | | | +| Iraq | IQ | Pakistan | PK | +| Ireland | IE | Palau | PW | +| Israel | IL | Panama | PA | +| Italy | IT | Papua New Guinea | PG | +| | | Paraguay | PY | +| Jamaica | JM | Peru | PE | +| Japan | JP | Philippines | PH | +| Jordan | JO | Pitcairn | PN | +| | | Poland | PL | +| Kampuchea, Democratic | KH | Portugal | PT | +| Kenya | KE | Puerto Rico | PR | +| Kiribati | KI | | | +| Korea, Democratic People's Republic of | KP | Qatar | QA | +| Korea, Republic of | KR | | | +| Kuwait | KW | Réunion | RE | +| | | Romania | RO | +| Lao People's Democratic Republic | LA | Rwanda | RW | +| Lebanon | LB | | | +| Lesotho | LS | St. Helena | SH | +| Liberia | LR | Saint. Kitts-Nevis | KN | +| Libyan Arab Jamahiriya | LY | Saint Lucia | LC | +| Liechtenstein | LI | St. Pierre and Miquelon | PM | +| Luxembourg | LU | Saint Vincent and the Grenadines | VC | +| | | Samoa | WS | +| Macau | MO | San Marino | SM | +| Madagascar | MG | Sao Tome and Principe | ST | +| Malawi | MW | Saudi Arabia | SA | +| Malaysia | MY | Senegal | SN | +| Maldives | MV | Seychelles | SC | +| Mali | ML | Sierra Leone | SL | +| Malta | MT | Singapore | SG | +| Marshall Islands | MH | Solomon Islands | SB | +| Martinique | MQ | Somalia | SO | +| Mauritania | MR | South Africa | ZA | +| Mauritius | MU | Spain | ES | +| Mexico | MX | Sri Lanka | LK | +| Micronesia | FM | Sudan | SD | +| Monaco | MC | Suriname | SR | +| Mongolia | MN | Svalbard and Jan Mayen Islands | SJ | +| Montserrat | MS | Swaziland | SZ | +| Morocco | MA | Sweden | SE | +| Mozambique | MZ | Switzerland | CH | +| | | Syrian Arab Republic | SY | +| Namibia | NA | | | +| Nauru | NR | Taiwan, Province of China | TW | +| Nepal | NP | Tanzania, United Republic of | TZ | +| Netherlands | NL | Thailand | TH | +| Netherlands Antilles | AN | Togo | TG | +| Neutral Zone (between Saudia Arabia and Iraq) | NT | Tokelau | TK | +| New Caledonia | NC | Tonga | TO | +| New Zealand | NZ | Trinidad and Tobago | TT | +| Nicaragua | NI | Tunisia | TN | +| Niger | NE | Turkey | TR | + +| | | | | +|--------------------------------------|----|---------------------------|----| +| Turks and Caicos Islands | TC | Venezuela | VE | +| Tuvalu | TV | Viet Nam | VN | +| | | Virgin Islands, U.S. | VI | +| Uganda | UG | | | +| Ukrainian SSR | UA | Wallis and Futuna Islands | WF | +| United Arab Emirates | AE | Western Sahara | EH | +| United Kingdom | GB | | | +| United States | US | Yemen | YE | +| United States Minor Outlying Islands | UM | Yemen, Democratic | YD | +| Uruguay | UY | Yugoslavia | YU | +| USSR | SU | | | +| | | Zaire | ZR | +| Vanuatu | VU | Zambia | ZM | +| Vatican City State (Holy See) | VA | Zimbabwe | ZW | + +# ANNEX B (to Recommendation F.401) + +## **Representation of O/R addresses for human usage1)** + +(This annex does not form an integral part of this Recommendation) + +## **B.1      Purpose** + +An O/R address consists of a set of attribute values taken from a total of 31 possible attributes. In order to represent visually an address to a human user, and to enable the user to enter the address into a user interface, each attribute value needs to be associated with the correct attribute type. Many of the full attribute types given in Recommendation X.402 are too long for convenient usage on paper or a screen. There is a need for a format which allows attributes to be represented concisely, e.g. on a business card. + +This annex specifies how addresses can be expressed concisely using labels to represent the attribute types. There are three categories of attributes: those standard mnemonic attributes which are most likely to be found in O/R addresses represented for human exchange (e.g. on business cards), those used in physical delivery addresses, and other specialized attributes (including domain defined attributes). In order to provide a format which is as concise as possible, many of the labels are single characters. This also makes them less language dependent. + +Subsection B.3 specifies the format for the representation of addresses, and § B.4 specifies the characteristics necessary for user interfaces which are intended to be used in conjunction with this format. + +## **B.2      Scope** + +A labelled format for the communication of O/R addresses to human users is specified. The format consists of a set of pairs of labels and attribute-values. The characteristics of a user interface which are necessary to accept addresses given in this format are also specified. + +1) This Annex is aligned with ISO/IEC 10021-2, Annex F(DAM) and is referenced in Recommendation X.402 + +In addition, a self-explanatory format suitable for use where there is more space, e.g. in printed material and in the user interface, is specified. + +## B.3 *Format* + +### B.3.1 *General* + +Some systems are capable of accepting messages when certain optional attributes of the recipient's O/R address [e.g. organizational units (OUs)] are omitted by the originator. In these circumstances it is normally preferable to use the shortest acceptable form of the address when representing the address for human usage. + +*Note 1* – OUs should only be used to disambiguate users with the same surname if this cannot be achieved by the use of other name attributes (given name, initials, or generation qualifier). The use of additional OUs for this purpose has the disadvantage that the user's O/R name will change if the naming of the OUs changes, or if the user moves to a different OU. + +Where national usage permits a single space value for the ADMD in an address, this may be represented in the address either by omitting the ADMD attribute, or showing the ADMD attribute with no value or the value of a space. + +*Note 2* – When sending messages internationally, there may be difficulties in reaching a recipient if a single space ADMD name is specified. + +If the attributes of an O/R address include characters from an extended character set, human users who do not normally use the same extended character set may have difficulty representing the O/R address or entering it into their messaging system. + +### B.3.2 *Labelled format* + +#### B.3.2.1 *Syntax* + +O/R addresses in labelled format consist of delimited pairs of labels and values in the syntax