On Monday 22 Nov 2010, Mukund Deshmukh wrote:
Most modern modems (by "modern" I mean compared to the 2400bps Microteks we used to use back in the early 1990s) have audio handling through AT commands. Hypothetically it should be possible to write a program that captures audio from the modem, transcodes it and plays it through ALSA, as well as the reverse: capture ALSA audio, transcode it and play it back to the remote party through the modem.
Check this... http://search.cpan.org/~mukund/Ivrs-0.24/Ivrs.pm No further development, as these modems have almost vanished.
Very neat! You know what would be even neater? Make an Asterisk driver for voice modems. Then you can use all Asterisk features without having to buy PSTN cards, useful for test beds and low-budget installations.
Regards,
-- Raj