To use iaxmodem with Hylafax:

- Install and configure Hylafax

- Take a look to %%EXAMPLESDIR%%/config.ttyIAX to configure the "virtual" modem

- For accepting incoming FAX/data calls, modify /etc/ttys as below
	and send SIGHUP to init process:

>ttyIAX  "%%PREFIX%%/sbin/faxgetty"  dialup  on secure

Additional Documentation:
%%DOCSDIR%%
%%EXAMPLESDIR%%
http://www.voip-info.org/wiki/view/Asterisk+IAXmodem