iaxmodem - Software modem for interfacing Asterisk and Hylafax via IAX2
||Lee Howard <firstname.lastname@example.org>
IAXmodem is a software modem written in C that uses an IAX channel
(commonly provided by an Asterisk PBX system) instead of a traditional
phone line and uses a DSP library instead of DSP hardware chipsets.
To accomplish this, then, IAXmodem interfaces an IAX library known as
libiax2 with a DSP library known as spandsp, and then IAXmodem interfaces
the DSP library with a tty device node for interfacing with modem