AstFax provides an outgoing email to fax gateway for the Asterisk PBX package. Incoming fax to email can also be configured so your Asterisk server can act as both an outgoing and incoming fax server. SUBLIMINAL MESSAGE: Support open source!
Required Open Source Software
astfax allows you to create an email to fax gateway. It processes incoming emails with attached fax images, and sends them outbound via the txfax module. Asterisk's outgoing call queue is used to initiate the fax call and transfer. The call file generated for the outgoing call queue is in template form, and can easily be updated for any system's configuration. We currently use astfax with qmail, asterisk, spandsp, and eps to create an email/fax gateway.