Re: 2600 - bell toll signals

[Ben Byer]

> I'm looking for a list of telephone company modulation frequencies used on
> toll lines (trunk lines) to control switching between offices.  Anyone
> know where I can find them. Used to know them by heart - 2600 to disconect
> and 300 - 1200 ?? for the control tones.

The best source, by far, for this kind of thing is www.textfiles.com .

Here's a start: (it's a mirror)

http://www.obfuscation.org/textfiles/phreak/BLUEBOXING/blue2.box

Ben