PBX and Seridores - VOIP PBX and Servidores

• Asterisk: Open Source PBX
• Asterisk@Home/Trixbox Pre-Configed CD w/CentOS & Asterisk + add-ons (FreePBX/AMP, FlashPanel, etc)
• Bayonne: Open source PBX of the GNU Telephony Project
• FreeSwitch: Open source cross platform (*nix, Win, OSX) multiprotocol (SIP, IAX, Googletalk, Jabber, XMPP, WOOMERA/H.323, PRI/T1/E1) softswitch.
• CallWeaver: vendor independent, cross-platform open source IP-PBX, originally derived from Asterisk. website
• OpenSER: flexible and powerful open source GPL SIP ( RFC3261 ) server with integrated TLS
• Sip Express Router: High-performance, configurable, free SIP ( RFC3261 ) server
• sipX Solution Summary: SIPfoundry - The SIP PBX for Linux (L-GPL)
• YATE - Open Source Linux/Windows GPL Telephony Server and Client (has support for SIP, H.323, IAX2, E1/T1, voicemail), H.323 - SIP translator.
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