On Wed, 6 Feb 2008 14:33:52 -0800 (PST), Jim Wilkins
wrote:

On Feb 2, 10:15*pm, Gunner Asch wrote:
...
Are the miltitary/government tones still in effect? *Certain tones
would automatically switch into governmental *phone networks?

Gunner, one time black boxer in his Much younger days.

Remember the Flash Override tone pair?

All that is is a 16-button Touch-Tone pad with an extra column on
the right - A B C D. 1633 Hz. Silver Box. Standard in-band
signaling.

Lots of Ham and Commercial radio gear has the ABCD buttons, and it
is widely used for repeater remote control or phone autopatch
controls.

Might still work if you have access to a real AUDOVON trunk, but
AFAIK that's a secure system with no official ways in from the PSTN.
Unless you want to get a visit from the local MIB, complete with the
Ray-Bans and Neuralizers....

Trips a 120-IPM Fast Busy/Reorder if you try using them on a regular
POTS telephone line - but DAMHIKT.

-- Bruce --