| Asterisk is a PBX (Private Branch eXchange) and telephony toolkit. It acts as middleware between Internet and telephony channels (like VoIP, VoFR, modems, Internet Phone Jack, etc.) and applications (like VoiceMail, directories, MP3 players, intercom). It has many advanced features such as a codec translation API. The base distribution includes several channel backends, as well as applications. However, the beauty of Asterisk is its ability to be extended using its APIs and dynamic module loader. End users can even write their own applications that run on the system. |