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15/70: From what I've heard |
Name: The Scanner 20 |
Date: 8:30 am Fri May 01, 1987 |
That there isnt any way to detect a Pen register. No humm, buzz, or any thing |
else. But hey, what do I know? |
Dont answer that. |
Anyway, 2 more questions, |
Im sure momma bell knows all about red box tones and stuff like that. But, |
what about those independent co's that make pay telephones and just kinda hook |
them up to normal lines in stores and stuff. Wouldnt they be easy to box off |
of or do they work in a different way altogether? Well, that was only one but |
an answer is appreciated. |
_-The Scanner |
16/70: 'Round here... |
Name: Taran King 1 |
Date: 2:41 pm Fri May 01, 1987 |
In this region, you can't just play the tones into the mouthpiece and get cred |
(credit) for whatever you've played into the phone...you CAN, though, dial a |
long distance number, it will then say, "Please deposit $x.xx". You put in |
(play the tones for) the money and it says something like, "Thank you for |
using AT&T." Ta da |
-TK |
17/70: Muxing, Etc |
Name: Doom Prophet 21 |
Date: 4:56 pm Fri May 01, 1987 |
Lucifer, I think what you mean about the bandwidths changing in Multiplexing, |
you are referring to voice frequency bandwidths. Multiplexing is just a method |
of sending more than one converstation down the same transmission path. In |
analog and older switches the method is called Frequency Division |
Multiplexing, or FDM, when the signals are seperated on basis of frequency, as |
opposed to newer switches which do it on a Time division basis (TDM). There's |
also something called Space DM but I don't think it has a whole lot to do with |
telephones (maybe stuff like digital Xmission). But anyway, a normal VF voice |
bandwidth goes from 300 to 3000 Hz which is SF in band, although the VF |
channel goes from 0 to 4000 Hz. Anything above 3000 is out of band signalling |
(like 3700 Hz). CCIS uses a seperate nettwork composed of STP's and varioius |
links and channels for independent signalling methods. |
About the red boxing, the circuits that keep track of the coins that have been |
entered are called Coin Detection & Announcement circuits (if the fortress is |
in an ACTS serving area), which are a part of the Station Signalling |
Announcement Subsystem which work out of local offices and in conjunction with |
TSPS (not TOPS as far as I have seenn, a flash of the switchook anytime |
during the initial charge announcements and an operator is connected. Playing |
the tones to a live operator wouldn't be a good idea as they can obviously |
tell the difference. |
Something else, there was a little discussion about AMA and all (isn't there |
everywhere?) a while back. The way a local office (LAMA) would keep track of |
the billing data is to use a few AMA circuits (there are always two, AMA0 and |
AMA1 but can be more for big offices) that reverse positions (from an active |
to standby mode at midnight when the datta in the buffer is recorded onto the |
actual tapes). So the AMARC computers can format the data to where it is |
recognnized by the RAO, the tapes have to be specially customized for that |
particular officere. A header label on the tape (put on at the beginning of |
each new tape entry (12)) tells the originating NPA, the office number, date |
and tape transport dates. A tape trailer is added on at the end of the tape |
entry for that day, which has the info about how many total calls were AMA |
recorded. The tape mark is some digit (?) that tells the RAO that the useful |
info (that they need to look at) is ended. The billing data itself is in a |
binary coded decimal form (0's and 1's) along with check and dummy codes. A |
noncheck dummy code fills the spaces on the tape to signigy that there wasn't |
a problem, but the space is supposed tobe there. A check dummy code is because |
the info wasn't received or sent from the Peripheral Adress bus or from the |
originating register into the charge buffer. If you ever come across AMA |
records (like in the call store section of SCCS) it won't look like anything |
that can determine billing (AMARC and RAO do that). They aren't too hard to |
read though, just takes a while. |
Doom |
Read:(1-70,^17),T,R,Q,P,A,? : |
18/70: Correction |
Name: Doom Prophet 21 |
Date: 5:52 pm Fri May 01, 1987 |
Damn, what I got that I thought was some type of AMA records are not AMA |
records (I think), so that means that I haven't been reading AMA records. |
Shit, that's something that I want to do. Have to get some. |
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