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Full Description
This revised edition of "SIPProtocol" 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. It explains how SIP is powerful "rendezvous" protocol that leverages mobility and presence to allow users to communicate using different devices, modes and services anywhere they are connected to the Internet. You learn why SIP has been chosen by the 3GPP (3rd Generation Partnership Program for wireless cell phones) as the core signalling, presence and instant messaging protocol.
Contents
SIP and the Internet; introduction to SIP; SIP clients and servers; SIP request messages; SIP response messages; header fields; related protocols; comparison to H.323; wireless and mobility; call flow examples; future directions. Appendices: changes in the SIP specification from RFC 2543 to RFC 3261.