Asterisk Dialogic DiaStar

Dialogic's DiaStar Server is a platform for app dev -- Asterisk-based or otherwise -- around functions like call progress analysis, fax, fax over IP, SS7 and Sigtran. The goal, according to Dialogic, is to get developers as much flexibility as possible, whether they want to leverage PSTN protocols like ISDN, SS7 or CAS or provide rich applications around voice and video. For LAN environments, Dialogic uses Woomera, the open-source IP-based signaling protocol.