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TUCoPS :: Phreaking Technical System Info :: autovon.txt

Autovon Military Phone Net (Pt's 1-3)





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                       Intro to Automatic Voice Network
                           Commonly know as AUTOVON
                                    Part I

                     -------------------------------------

   AUTOVON is the Military Voice Communications System. Each Military
Installation has it's own prefix for use in the AUTOVON system. Not all
telephones on military installation have the capability to call another
military installation via AUTOVON. However, they can all receive an AUTOVON
call coming from another installation.
   A different 3-number prefix is used when dialing a military base using
AUTOVON than the prefix used when dialing through the civilian phone system.
Usually, AUTOVON is accessed by dialing 8 or 88 and waiting for a dial tone(on
any phone connected to the AUTOVON system). A phone call made in this manner is
limited to "ROUTINE" Priority.
   There are "ROUTINE","IMMEDIATE", "FLASH", and "FLASH OVERRIDE" priorities,
with ROUTINE being the lowest and FLASH OVERRIDE the highest To dial higher
priority phone calls than routine, access to Technical control equipment is
normally needed.
   Calling AUTOVON exchanges might (most likely will) need a small phone
modification. This modification is known as a "SILVER BOX".
   Further inphormation on SILVER BOXES will be described in part II. Stay
tuned...



                     -------------------------------------

                       Intro to Automatic Voice Network
                           Commonly know as AUTOVON
                            Part II 'Silver Boxes'

                     -------------------------------------

  Warning: This modification could permanently damage you phone!! Read
    information carefully!!!

   Step One:  Unscrew the two large screws on the base of your phone. Take
  cover off and place it and the screws in a safe place.
   Loosen (but don't remove) the screws on the sides of the touch tone keypad
  (These are on the sides, and attach it to its mounting brackets). Now,
  CAREFULLY remove the pad from its brackets (be sure not to trip any wires!!)
   You will notice a plastic cover on the pad. Separate the two halves and put
  them out of your way... Be sure not to destroy them!!!!
   Now, turn over the pad. You should see a mass of wires, gold plated
  contacts( yea, it's real gold!), discrete components, and two fairly large
  black, hmmm, things!
   These are the coils that generate the frequencies. Only one is used for
  standard, so all the coils are capable of generating all 4 primary tones
  (only connections to 3 of the 4 are given, though...). Your about to make
  your connection to the fourth, and make the third column of keys "bank
  switched" between normal and fourth row.
   Now, cut three lengths of wire of different colors about 2 feet long. Look
  at the coil on the left (with the 5 solder contacts facing you) and solder a
  wire to the to the 4th post from the left. This is the 1633 Hz output. Solder
  the other end of this wire to the left pole of the smallest SPDT switch you
  can find. This is the point of no return now!!!!..Take a look at the bottom
  edge of the keypad. You should see a row of 3 gold plated contacts. Look at
  the one on the left. This controls the rightmost bank of keys.
   GENTLY separate the two touching connectors (they are soldered together with
  a drop of solder with) and spread them apart. Solder a colored wire to the
  top contact, and solder it to the RIGHT pole of the SPDT.
   Now, take another colored wire (different color) and solder it to the bottom
  (closest) contact. Solder the other end of this to the CENTER pole of the
  SPDT.

   You have now completed the mods on your phone!!! Congrats!!!
   When the switch is in one position you'll get normal tones, in the other
  you'll get 1633 tones.
   Operating procedures will be described in the next phile... Stay tuned!!!



                     -------------------------------------

                       Intro to Automatic Voice Network
                           Commonly know as AUTOVON
                        Part III 'Operating Procedures'

                     -------------------------------------

   Now, you're at the part that you have been waiting for!! Testing!! Call
 Directory Assistance using normal tones xxx-555-1212. Now, quickly switch to
 1633, and press down the [#] key. You will now get a dial tone. You can then
 switch back to normal, and try dialing different numbers. The two most
 interesting are 6 and 7. These often form a loop-around type connection, and
 two people can call in, one using 6 and one using 7, and talk in this
 matter...
                         Happy Phreaking you bad boys!!

                                  ShAdOwRuNnEr



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