Yate - Yet Another Telephony Engine

is a next-generation telephony engine; while currently focused on Voice over Internet Protocol (VoIP) and PSTN, its power lies in its ability to be easily extended. Voice, video, data and instant messenging can all be unified under Yate's flexible routing engine, maximizing communications efficiency and minimizing infrastructure costs for businesses.

Yate can be used as a:

• VoIP server
• VoIP client
• Conference server - with up to 200 channels in a single conference
• VoIP to PSTN gateway
• PC2Phone and Phone2PC gateway
• IP Telephony server and/or client
  • H.323 gatekeeper
  • H.323 multiple endpoint server
  • H.323<->SIP Proxy
  • SIP session border controller
  • SIP router
  • SIP registration server
  • IAX server and/or client
  • Jingle client or server
  • MGCP gateway or server
• ISDN passive and active recorder
• ISDN, RBS, analog passive recorder
• SS7 switch
• Call center server
• IVR engine
• Prepaid and/or postpaid cards system

The software is written in C++ and it supports scripting in various programming languages (such as those supported by the currently implemented PHP, Python and Perl libraries) and even any Unix shell. The PHP, Python and Perl libraries have been developed and made available in order to ease development of external functionalities for Yate.

Yate is production-ready software and is easily extensible.

Yate is licensed under the GPL.