Hackers Underworld 2: Forbidden Knowledge/Hackers Underworld 2: Forbidden Knowledge.iso/PHREAK/TELCOM3.TXT

Text File | 1994-07-17 | 10KB | 277 lines

Extracting [Basic3.doc] ...


                          ==========================
                          =BASIC TELECOMMUNICATIONS=
                          ==========================
                                   PART III


PREFACE:

  In part III, we will discuss the dialing procedures for domestic as well as
international dialing.  We will also take a look at the telephone numbering
plan.

===============================
=North American numbering plan=
===============================

  In North America, the telephone numbering plan is as follows:

     A) a 3 digit Numbering Plan Area (NPA) code, {ie, area code}

     B) A 7 digit telephone # consisting of a 3 digit Central Office (CO) code
        plus a 4 digit station #.

  These 10 digits are called the network address or destination code.  It is
in the format of:

        Area Code   Telephone #
        ---------   -----------

           N*X        NXX-XXXX

   Where:  N = a digit from 2-9
           * = the digit 0 or 1
           X = a digit 0-9

Area Codes:
-----------

  Check your telephone book or the separate listing of area codes found on
many BBS's.  Here are the Special Area Codes (SAC's):

     510 - TWX (USA)
     610 - TWX (Canada)
     700 - New Service
     710 - TWX (USA)
     800 - WATS
     810 - TWX (USA)
     900 - DIAL-IT Services
     910 - TWX (USA)

  The other area codes never cross state lines, therefore each state must have
atleast one exclusive NPA code.  When a community is split by a state line,
the CO #'s are often interchangable (ie, you can dial the same # from 2
different area codes)


TWX:

  TWX (Telex II) consists of 5 teletype-writer area codes.  They are owned by
Western Union.  These SAC's may only be reached via other TWX machines.  These
run at 110 baud.  Besides the TWX #'s, these machines are routed to normal
telephone #'s.  TWX machines always   respond with an answerback. For
example, WU's FYI TWX # is [phone], the corresponding real number to
this is [phone].  The answerback for this service is "WU FYI MAWA."

  If you don't want to buy a TWX machine, you can still send TWX messages
using Easylink [800/325-4112 - see Tuc's and my article entitled "Hacking
Western Union's Easylink]

700:

  At the time of this writing, the 700 exchange does not yet exist.  AT&T
plans to use it soon though.  They plan to make it a type of fancy call
forwarding service.  It will be targeted towards salesmen on the run.

  To understand how it works, I'll explain it with an example.  Let's say
Joe Q. Salespig works for AT&T security and he is on the run chasing a phreak
around the country who royally screwed up an important COSMOS system.  Let's
say that Joe's 700 # is [phone].  Everytime Joe goes to a new hotel, he
dials a special 700 #, enters a code, and the # where he is staying.  Now, if
his boss received some important info, all he would do is dial [phone]
and it would ring wherever Joe last programmed it to.  Neat, huh?

800:

  This SAC is one of my favorites since it allows for toll-free calls.

  INWARD WATS (INWATS):  Inward Wide Area Telecommunications Service is the
800 #'s that we are all familiar with.  800 #'s are set up in service areas or
bands.  There are 6 of these.  Band 6 is the largest and you can call a band
6 # from anywhere in the US except the state where the call is terminated
(this is why most companies have one 800 # for the country and then another
for just one state).  Band 5 includes the 48 contiguous states.  All the way
down to band 1 which includes only the states contiguous to that one.
Therefore, less people can reach a band 1 INWATS # that a band 6 #.

  Intrastate INWATS #'s (ie, you can call it from only 1 state) always have a
2 as the last digit in the exchange (ie, 800-NX2-XXXX).  The NXX on 800 #'s
represent the area where the business is located.  For example, a # beginning
with 800-431 would terminate at a NY CO 800 #'s always end up in a hunt series
in a CO.  This means that it tries the first # allocated to the company for
their 800 lines; if this is busy it will then try the next #, etc).  You
must have a minimum of two lines per each 800 #.  For example, Travelnet
uses a hunt series.  If you dial [phone], it will first try the #
associated with 8400; if it is busy it will go to the next available port,
etc.  INWATS customers are billed by the # of hours of calls that are made
to their #.

  OUTWATS (OUTWARD WATS):  OUTWATS are for making outgoing calls only.  Large
companies use OUTWATS since they receive bulk-rate discounts.  Since OUTWATS #
cannot have incoming calls, they are in the format of:

     (800) *XX-XXXX

  Where * is the digit 0 or 1 (or it may be designated by a letter) which
cannot be dialed unless you box the call.  The *XX identifies the type of
service and the areas that the company can call.

Remember:
       INWATS + OUTWATS = WATS EXTENDER (see part I)

900:

  This DIAL-IT SAC is a nationwide dial-it service.  It is used for taking
television polls and other stuff.  The first minute currently costs an
outrageous 50 cents and each additional minute costs 35 cents.  Bell takes in
alot of revenue in this way.

  Dial [phone] to find out what is currently on the service.


CO CODES:
---------

  These identify the switching office where the call is to be routed.

  The following CO codes are reserved nationwide:

     555 - directory assistance
     844 - time    } these are now in
     936 - weather } the 976 exchange
     950 - future services
     958 - plant test
     959 - plant test
     970 - plant test (temporary)
     976 - DIAL-IT services

  Also, the 3 digit ANI & ringback #'s are regarded as plant test and are thus
reserved.  These numbers vary from area to area.

  You cannot dial a 0 or a 1 as the first digit of the exchange code (unless
using a blue box).  This is due to the fact that these exchanges (000-199)
contains all sorts of interesting shit such as conference #'s, operators, test
#'s, etc.


950:

[also see part I]

  Here are the services that are currently on the 950 exchange:

     1000 - SPC
     1022 - MCI Execunet
     1033 - US Telephone
     1044 - Allnet
     1066 - Lexitel
     1088 - SBS Skyline

  These SCC's (Specialized Common Carriers) are free from fortresses!

  Also, the 950 exchange will probably be phased out with the introduction of
Equal Access.

Plant tests:

  These include ANI, ringback, and other various tests.

976:

  Dial 976-1000 to see what is currently on the service.  Also, many BBS's
have a listing of these #'s.


N11 Codes:
----------

  Bell is trying to phase some of these out, but they still exist in many
areas.

     011 - international dialing prefix
     211 - coin refund operator
     411 - directory assistance
     611 - repair service
     811 - business office
     911 - EMERGENCY


=======================
=International Dialing=
=======================

  With International Dialing, the world has been divided into 9 numbering
zones.

  To make an internation call, you must dial:
    Int. Prefix + Country Code + Nat. #

  In North America, the international dialing prefix is 011 for station-to-
station calls and 01 for operator-assisted calls.  If you can dial
international #'s directly in your area then you have International Direct
Distance Dialing (IDDD).

  The country code, which varies from 1 to 3 digits, always has the world
numbering zone as the first digit.  For example, the country code for the
United Kingdom is 44, thus it is in world numbering zone 4.

  Some boards may contain a complete listing of other country codes, but
here are a few:

     1 - North America (US, Canada,etc)
    20 - Egypt
   258 - Mozambique
    34 - Spain
    49 - Germany
    52 - Mexico (Southern portion)
    61 - Australia
     7 - USSR
    81 - Japan
    98 - Iran

  If you call from an area other than North America, the format is generally
t