Liens interressant:
http://wiki.kolmisoft.com/index.php/Send_Receive_Fax-T38
http://www.voip-info.org/wiki/view/T38modem+configuration+with+Asterisk
http://www.foriamroot.org/hylafax-6-0-debian-or-ubuntu-t38modem-1-0-asterisk-1-6/
