The second edition of sip understanding the session initiation protocol delivers on the title engineers and programmers can look to the text as a good starting point but will want to go the ietf for more serious stuff. Understanding the session initiation protocol second edition understanding the session initiation protocol second edition alan b johnston artech house boston o london wwwartechhousecom 2 introduction to sip 17 21 a simple session establishment example 17. Now in its fourth edition the ground breaking artech house bestseller sip understanding the session initiation protocol offers you the most comprehensive and current understanding of this revolutionary protocol for call signaling and ip telephony. The session initiation protocol sip is a signaling protocol used for initiating maintaining and terminating real time sessions that include voice video and messaging applications. This revised edition of sip understanding the session initiation protocol gives you a thorough and up to date understanding of this revolutionary protocol for call signalling and ip telephony the second edition includes brand new discussions on the use of sip for wireless multimedia communications
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