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Website | elastix.org |
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Website | issabel.org |
freepbx - FreePBX is a web-based open source GUI that controls and manages Asterisk (PBX).
FreeSWITCH - FreeSWITCH is an open-source media application designed to support popular protools such as SIP and WebRTC and provides a platform to develop voice and video applications.
Asterisk - An open source telephony switching and private branch exchange service for Linux.
FusionPBX - FusionPBX is an open source FreeSWITCH GUI.
Kamailio - Kamailio® (successor of former OpenSER and SER) is an open source SIP server released under...
VitalPBX - VitalPBX is a full-feature PBX (phone system) based on Linux and Asterisk.