Mon premier blog

SIP: Understanding the Session Initiation Protocol Alan B. Johnston
Publisher: artech-house

SIP, is arguably the most important protocol for Lync. Session Initiation Protocol (SIP) SIP is a signaling protocol widely used for voice and video. Session Initiation Protocol, a.k.a. First we have to look at SIP to understand what SIPTAS is. SIP is a standard protocol used by numerous communication platforms, and its purpose is, as the name says, to initiate sessions, although it's been extended to serve other purposes as well, such as presence. SIP is a standard of Internet Engineering Task Force (IETF). SIP is defined in RFC 3261 from the IETF, and that document is a good source for a basic understanding of the protocol. What is SIP, and how does it work? The Cisco Unified Communications Manager supports the popular Session Initiation Protocol, or SIP. SIP is abbreviation of Session Initiation Protocol. SIP (Session Initiation Protocol). Traditionally if your enterprise wants to connect to PSTN could, you would need BRIs, PRIs, PSTN gateways. Session Initiation Protocol (SIP) is becoming more prevalent in voice and video communications products, but not everyone is advising corporate buyers to look for this standard when buying telecommunications equipment.