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First a bit of Phone Trivia. A standard telephone keypad has 12 buttons. These buttons, when pushed, produce a combination of two tones. These tones represent the row and column of the button you are pushing.
1 1 1 2 3 4 0 3 7 9 6 7 697 (1) (2) (3) 770 (4) (5) (6) 851 (7) (8) (9) 941 (*) (0) (#)So (1) produces a tone of 697+1209, (2) produces a tone of 697+1336, etc.
Function:
What the Silver Box does is just creates another column of buttons, with the new tone of 1633. These buttons are called A, B, C, and D.
Usefulness:
Anyone who knows anything about phreaking should know that in the old days of phreaking, phreaks used hardware to have fun instead of other people's Sprint and MCI codes. The most famous (and useful) was the good ol' Blue Box. However, Ma Bell decided to fight back and now most phone systems have protections against tone-emitting boxes. This makes boxing just about futile in most areas of the United States (ie those areas with Crossbar or Step-By-Step). If you live in or near a good-sized city, then your phone system is probably up-to-date (ESS) and this box (and most others) will be useless. However, if you live in the middle of nowhere (no offense intended), you may find a use for this and other boxes.
Materials:
Tools:
Procedure:
Using The Silver Box:
What you have just done was installed a switch that will change the 369# column into an ABCD column. For example, to dial a 'B', switch to Silver Box Tones and hit '6'.
Noone is sure of the A, B, and C uses. However, in an area with an old phone system, the 'D' button has an interesting effect. Dial Directory Assistance and hold down 'D'. The phone will ring, and you should get a pulsing tone. If you get a pissed-off operator, you have a newer phone system with defenses against Silver Boxes. At the pulsing tone, dial a 6 or 7. These are loop ends.
-= Exodus =-