Lightweight SIP proxy, location server, and registrar written in Node.js
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Sippy B2BUA is a RFC3261-compliant Session Initiation Protocol (SIP) stack and Back-to-back user agent (B2BUA) server software.
Linphone.org mirror for flexisip (git://git.linphone.org/flexisip.git)
Easy to use but advanced IP PBX system, VoIP gateway and conference server. (Source Code) GPL-2.0 C/deb
Troubleshooting and monitoring VoIP calls. (Source Code) AGPL-3.0 Nodejs/Go/Docker