On Tue, Oct 27, 2009 at 5:57 PM, Jed Rothwell <[email protected]> wrote:
> It reminds me of the early days of DTMF when people -- including some now > high and mighty industry leaders -- were involved in ripping off the phone > company with tone generators. Some guy was reportedly able to do this with a > plastic whistle from a package of Captain Crunch cereal, circa 1972. Maybe. But it was a lot easier with the 4 x 4 DTMF control pad. We made some "Blue Boxes", or SOMEONE did, with the tones only available to operators. Of course SS7 (signaling system seven) rendered them ineffective. Terry
