So what is SIP?Â The Session Initiation Protocol is a signalling set of rules for controlling multimedia communications such as voice and video calls over internet protocol (IP). SIP can be used for creating, modifying and terminating two-party or multiparty sessions consisting of one or several media streams. Application examples of SIP include video-conferencing, streamed multi-media distribution, instant messaging, presence information, file transfer and online games.
SIP was originally designed in 1996. The latest version of the specification is RFC 3261 from the IETF Network Working Group. In November 2000, SIP was accepted as the 3G architecture for IP-based services in cellular systems.
For more in depth knowledge on SIP youâ€™d be better served looking at a reference site such as Wikipedia or the Telecoms Industry Association.
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