asterisk-oh323 adds H.323 support to the ASTERISK soft PBX. It does this by interfacing the OpenH323 library to ASTERISK through a loadable module. The package provides the channel driver as well as a wrapper in a shared library form. It is able to initiate and receive calls to and from H.323 endpoints, and has been successfully tested with the H.323 terminals on the OpenH323 site (ohphone, openphone), GnomeMeeting, Microsoft NetMeeting, Cisco routers, H.323 Snom phones, and other hardware and software H.323 IP phones.
astfax allows you to create an email to fax gateway. It processes incoming email messages with attached fax images and sends them out 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. It can be used (for example) with qmail, asterisk, spandsp, and eps to create an email/fax gateway.
Bayonne is the telephony server of the GNU project. It offers a script-driven threaded multi-line state event telephony service on GNU/Linux, xBSD, and Microsoft Windows for building voice response systems, and uses telephony plugins for runtime driver configuration. It also features "TGI" for making Perl applications "telephony aware". It may be used to build telephony-based system administration, home automation, automated attendant, v-commerce, and voice messaging systems.