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Related categories 4
Sites 10
- Skype Peer to peer voice service. Users may call landlines and cellphones for a fee; users may call each other for free. Source code is not available.
- Asterisk Open Source telephony switching and private branch exchange (PBX) daemon. Supported signalling protocols: H.323, SIP, MGCP, SCCP (Cisco Skinny).
- Ekiga Videoconferencing application to make audio and video calls to remote users. Supports both SIP and H.323.
- OpenH323 Gatekeeper Free H.323 gatekeeper (GPL) based on OpenH323.
- Partysip SIP proxy server. It can operate as registrar server, redirect server and stateful proxy server. SIP is an open standard (IETF) replacement for H323.
- GNU oSIP Implementation of Session Initiation Protocol (SIP). This library provides an interface to initiate and control SIP based sessions.
- GNU Bayonne A free, scalable telecommunications application server by the GNU Project.
- Siproxd Project Proxy/masquerading daemon for the SIP protocol. It handles registrations of SIP clients on a private IP network and performs rewriting of the SIP message bodies to make SIP connections work via a masquerading firewall (NAT).
- Linphone SIP based web phone. Supported audio codecs are G711, LPC10-15, GSM, and SPEEX.
- KPhone SIP based VoIP user agent. It supports Presence and Instant Messaging.