The Anarchist Cookbook (27 page)
'hang-up' code that the phone was not receiving due to the wire being disconnected
suddenly gets the code and
dumps its' 'temporary' storage spot.) You can make a nice amount of money this way, but
remember that a repairman will stop by every few times it is reported broken and repair
it, so check it at least once a day. Enjoy and have fun. Many phones I have done this to,
and it works well with each..
96. Computer Based PBX by The Jolly Roger
To get a better understanding of what a pbx can do, here are a few basic fundamentals.
The modern pbx is a combined computer, mass storage device, and of course a switching
system that can:
Produce itemized, automated billing procedures, to allow the identification and
management of toll calls. [hahaha]
Combine daytime voice grade communication circuits into wideband data channels for night
time high speed data transfers.
Handles electronic mail [including office memos].
Combine voice channels into a wideband audio/visual conference circuit, with the ability to
xfer and capture slides, flipcharts, pictures of any kind.
Both the external and internal calling capacity of the pbx system must be carefully
considered because many business operations run a very high ratio of internal station to
station dialing and a low capacity system will not handle the requested traffic load. A
critical factor is the number of trunks and the central office facilities that are used for
outside connections. Another is the number of junctions or [links] that make up the
internal calling paths. To understand the services available on a typical computer run pbx it
is necessary to introduce the subject of time division switching. In a time division
switching network all connections are made via a single common bus called (of course) a
'time-division bus'. Every line trunk that requires a connection with another is provided
with a port circuit. All port circuits have access to the time division bus through a time
division switch. [when two ports require connection, their time division switches operate at
a very high frequency (16,000 times per second.) This technique, which is called 'speech
sampling', allows many simultaneous connections over the same time division bus. Each
connection is assigned a time interval, the 'time slot', and the number of time slots
identifies the number of simultaneous connections among ports.] The next critical item is
circuit packs. The system elements that we will be describing in future tutorials
[lines/trunks/switches, memory and control] are contained on plug in circuit packs. Each
line circuit pack contains a number of lines, in example, four. But the assignment of station
numbers to actual phone line circuits is flexible. The system memory is contained in circuit
packs which provide the call processing functions. The circuit packs are held in small
frames called 'carriers'. Within each carrier, the circuit packs are plugged into positions:
the 'slots'. Every circuit can be addressed by, say a five digit number which tells its
location by carrier-slot-circuit.... [starting to get the idea?] There can be three types of
carriers in a modern pbx system:
O line carriers
0 trunk carriers
O control carriers
The line carriers contain station lines. In AT&T's "dimension" model, for example, a total
of 52 to 64 lines are provided. The trunk carriers contain slots for 16 trunk circuit packs.
The control carrier includes processor, memory, control circuitry, data channels for
attendant console control and traffic measurement outputs. Pbx systems will directly
reflect the types of services offered at the c.o.
o ccsa
o ccis
o picturephones [sooner than you think my phriends]
Common control switching arrangements (ccsa) permit any unrestricted telephone station
to call any other internal or external system station by using the standard seven digit
number. Alternate routing is a feature of ccsa service the inter-facility, alternate routed
calling paths are accomplished at the telephone company central office level, not at the
pbx level. A system of interest to large scale telephone users is common channel
interoffice signaling ccis. Typically, this technique employs common channels to carry all
inter-facility signaling instructions: dial pulses, on hook (idle), off hook (busy),and so on,
between two switching centers. [getting warm]. Ccis replaces older methods of interoffice
signaling such as 'in band' and 'out of band' techniques. By the way, real phreaks are
selling their boxes to idiots who still think they're worth a lot...the former (in band)
transmits signaling data within the normal conversation bandwidth. Its shortcoming is that
false information may be transmitted due to unique tone or noise combinations set up in
the talking path. [this is the official reasoning]. Out of band signaling techniques placed
the interoffice data in special channels, generally adjacent to and immediately above the
voice path. To preserve interchannel integrity, out of band signaling requires very efficient
filtering or greater 'band guard' separation between channels.
97. PC-Pursuit Port Statistics by PC-Pursuit Users
Introduction:
The last 30 days of PC-Pursuit have been extremely controversial. Users and ex-users
have demanded accurate statistics, and Telenet has provided us with very little. And the
data that was provided is questionable. Well, here is some data that is guaranteed to be
accurate and make Telenet scream. If you wish to update this data on your own, we will
tell you how later in this text. The following chart consists of all the direct Telenet
addresses of the PC-Pursuit city nodes and the total number of modems on each node.
Here is what the data means:
NJNEW/3 2011 .12 56
! ! ! ! \-- Total Number of Modems in NJNEW
! ! ! \- Last Working Suffix of Address sequence.
! ! \- Direct Telenet Address Prefix.
! \--- Baud Rate of This Port is 300.
\--------- Mnemonic.
Please note that there are several perfectly legal ways to connect to a PC-Pursuit port
such as NJNEW/3:
Ways To Connect to NJNEW/3:
C D/NJNEW/3,PCP10000,
C 2011,PCP10000,
C 2011.10,PCP10000,
The first, is self explanatory. The second does the same thing as the first, only that it is
slightly faster and gives the user much greater flexibility. The third is an example the
flexibility, because a request is made to connect to the tenth, and only the tenth, modem
on the NJNEW/3 port. By simply attempting to connect to every single modem in the 2011
chain, we were able to count the number of modems on each port and come up with the
following charts which were extracted on June the twenty ninth of the year 1989:
Rotary PortDirect AddressMax. RangeCity TotalRotary PortDirect AddressMax.
RangeCity Total
NJNEW/32011.1256CAOAK/34155.416 /12201301.4 /
12415216.8 /2420122.4 /2441511.4DCWAS/3202115.646CAPAL/3415106.412 /
12202116.24 /12415224.8 /24202117.16 /
24NONENONECTHAR/3NONENONE8CASFA/3415215.620 /12203120.8 /
12415217.10 /24NONENONE /24 41523.4WASEA/320617.430ORPOR/350320.28
/1220619.22
/1250321.6
/2420621.4
/
24NONENONENYNYO/3212315.422AZPHO/360222.420 /12212316.14 /1260223.12
/2421228.4 /2460226.4CALAN/3213412.840MNMIN/3612120.422 /
12213413.28
/12612121.14
/2421323.4
/
2461222.4TXDAL/3214117.630MABOS/3617311.432 /12214118.22 /
12617313.20 /2421422.4 /2461726.8PAPHI/3215112.636TXHOU/3713113.842 /
122155.22
/12713114.24
/2421522.8
/
2471324.1OHCLE/321620.426CACOL/371423.418 /1221621.18 /127144.1 /
24216120.4 /2471424.4CODEN/3303114.440CASAN/3714119.420 /12303115.18 /
12714213.12
/2430321.22
/
24714124.4FLMIA/3305120.628CASDI/3714102.422 /12305121.18(619)/12714210.14
/24305122.4 /24714121.4ILCHI/3312410.840UTSLC/380120.422 /12312411.28 /
1280121.14 /2431224.4 /2480112.4MIDET/3313214.630FLTAM/381320.418 /
12313216.18
/1281321.1
/2431324.6
/
24813124.4MOSLO/33145.416MOKCI/3816104.420 /12314421.8 /12816221.12 /
2431420.4 /24816113.4GAATL/3404113.832CAGLE/3NONENONE?? /12404114.20
/1281821.18
/2440422.4
/
24NONENONECASJO/3408111.434CASAC/39167.416 /1240821.26 /1291611.8 /
24408110.4 /2491612.4WIMIL/341420.424NCRTP/391920.420 /1241421.16 /
1291921.12 /24414120.4 /24919124.4NOTE: CASAC/3, CASAC/24 were estimated.
PC-Pursuit Modems Statistics Chart
Number of Modems - 01/29/89
Mnemonic30012002400Total
NJNEW1240456DCWAS6241646CTHAR0808WASEA42243
0NYNYO414422CALAN828440TXDAL622432PAPHI622836OHCLE418426CODEN418224
4FLMIA618428ILCHI828440MIDET618630MOSLO48416GAATL820432CASJO426434
WIMIL416424CAOAK48416APAL48012CASFA610420ORPOR2608AZPHO412420MNMIN
414422MABOS420832TXHOU8241042CACOL410418CASAN412420CASDI414422UTSLC
414422FLTAM410418MOKCI412420CAGLE418426CASAC48416NCRTP412420Total16656
2170898Average4.882352916«29412526.411765
I think the statistics basically speak for themselves. I am sure there will no doubt be
hundreds of people who will not smile at the number of specific kinds of ports supported,
not to mention the number of 'dead' or 'down' modems you will find when you verify the
totals. Usually, 2% to perhaps 10% of the modems are 'dead' with specific ones repeatedly
failing week after week.
History Of This Collection:
Almost a year ago a small selected group of devoted individuals got together to discuss
problems with the PC-Pursuit Network, in the middle of our discussions a question was
asked as to how the network really processes our calls. This was intended to help us assess
SET commands and other such matters. When the address hypothesis was offered we
quickly set out to prove it. It was proved in about 3 minutes with the discovery of 2011
(First try was xxx1). The data has continually been collected and analyzed ever since, but
until now, has never been mass released.
A small group of teen age hackers discovered several interesting things that can be done
with these addresses -- many of which will not be discussed here short of mentioning that
these ports connected to via these addresses are not limited to PC-Pursuiters. You can,
however, fight "dead" dialout modems in cities via the address method. Dead modems can
be located in about 10 seconds (faster than Telenet), and can either be reported or
skipped past by the user connecting to the next modem in the sequence after the "dead"
one. (Note: Say 2011.3 is dead, connect to 2011.4 and you will be past it. If 2011.4 is busy,
go to 2011«. The reader should notice 2011.3 is the same as 2011C.)
The most interesting value of these addresses is that one can count the number of ports
that Telenet keeps so secret (Grin). When there were only 28 cities in operation there
were an average of 2.7 300 baud, 9.4 1200 baud, and 2« 2400 baud modems in each city.
Some cities had as little as 2 modems on a port and as many as 12. Only recently has the
number of modems per city begun to jump.
How To Update The Count Yourself:
An ID is not required to "request" one of these ports, thus the tallying can be done any
time of day by simply typing the number at the @ prompt. Here is an example with four
modems (NJNEW/24):
@20122.1
201 22A REFUSED COLLECT CONNECTION 19 80
@20122.2
201 22B REFUSED COLLECT CONNECTION 19 80
@20122.3
201 22C REFUSED COLLECT CONNECTION 19 80
@20122.4
201 22D REFUSED COLLECT CONNECTION 19 80
@20122«
201 22E ILLEGAL ADDRESS 19 80
The reader should be aware that PC-Pursuit ports always respond with '19 80'. Do not
confuse it with '19 00', which are not PC-Pursuit ports. In the above example we know
there are four ports because the forth was the last existing port before we encountered
the 'ILLEGAL ADDRESS.' There are several ways to signify that you have gone one beyond
the end of the ports:
xxx xxx ILLEGAL ADDRESS 19 80
xxx xxx NOT OPERATING 19 80
The request freezes (Note: Issue a BREAK then D
yielding 'ATTEMPT ABORTED'.)
You should be aware that modems which are out of order in the middle of the sequence
can respond with 'NOT OPERATING' or may freeze the request. You should also note that
when updating the existing list, all you need to do is try to request the next modem beyond