is a telephony integration platform. It provides a complete PBX, interfaces for analog and digital hardware (T1, ISDN), VoIP (voice over IP) protocols, computer-telephony integration, IVR (interactive voice response) and ACD (automated call distribution) programming.Asterisk can be programmed in Tcl using the agi package. A Tcl/C-based softphone is also available at the Tel project http://tel.sourceforge.netAs of June 2004, Asterisk is very stable, but still somewhat evolving.A very extensive Asterisk wiki is avaliable at http://www.voip-info.org/wiki-Asterisk .Free developers facilities for setting up and testing Asterisk and PSTN termination are available at http://www.voipuser.org/Mailing lists for users and developers, including an archive of past messages can be found at [1]. Newcomers with questions are encouraged to search the mailing list archives or wiki before posting, as list traffic is fairly high.More traditionally, asterisk is also the name for the character "*", which is sometimes pronounced as splat.
I (BAS) also wrote an article about Asterisk for Linux Journal, and have a sample of using Tcl as an AGI. http://www.linuxjournal.com/article.php?sid=6769
German language wiki : http://www.Asterisk-Doku.de.tt
