We're Looking at creating a large fax farm via T.38 (Fax over Voip - hundreds of incoming and outgoing faxes) on linux servers, anyone have any suggestions on what is available? All my searches return using Asterisk 1.6.x with a commercial product from Digium called "Fax for Asterisk" (with required purchase of "channels" at $38.00 per channel). There must be an open source project out there I can't seem to find.

Suggestions welcome!

Here is some additional info: We're using Ubuntu 9.10, and planning to use T.38

If I have missed anything, let me know.