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SIP: Understanding the Session Initiation Protocol Alan B. Johnston
Publisher: Artech House Publishers

7 Important Things to Know about SIP (Session Initiation Protocol). No integration issues: On-premise systems often rely on integration between legacy and new VoIP equipment, which can produce session initiation protocol (SIP)-compatibility issues and service disruptions. SIP is a standard of Internet Engineering Task Force (IETF). But the most important for your business right now is SIP. SIP is abbreviation of Session Initiation Protocol. In the world of technology, there seem to be too many acronyms to keep track of. When you make a phone call, the number you dial is sent via the SIP (Session Initiation Protocol) protocol to the IP-PBX, the call is set up by the IP-PBX, but the voice packets go directly from handset to handset. SIP (Session Initiation Protocol) is a signaling protocol used to create, manage and terminate sessions in an IP based network. We are thrilled to provide another guest article, this month from Windstream Communications. Professor Henning Schulzrinne co-designed the Session Initiation Protocol (SIP) along with Professor Mark Handley. First we have to look at SIP to understand what SIPTAS is.