Sip: Understanding the Session Initiation Protocol, Third Edition

Now in its third 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 third edition has been significantly expanded with brand new chapters on NAT traversal, SIP security, services in SIP, presence and instant messaging, Peer-to-Peer SIP, and an introduction to ABNF and XML. This cutting-edge book shows you how SIP provides a highly-scalable and cost-effective way to offer new and exciting telecommunication feature sets, helping you design your "next generation" network and develop new applications and software stacks. Other key discussions include SIP as a key component in the Internet multimedia conferencing architecture, request and response messages, devices in a typical network, types of servers, SIP headers, comparisons with existing signaling protocols including H.323, related protocols SDP (Session Description Protocol) and RTP (Real-time Transport Protocol), and the future direction of SIP. Detailed call flow diagrams illustrate how this technology works with other protocols such as H.323 and ISUP. Moreover, this book covers SIP RFC 3261 and the complete set of SIP extension RFCs.

Now in its third edition, the ground-breaking Artech House bestseller SIP: Understanding the Session Initiation Protocol offers the most comprehensive and current understanding of this revolutionary protocol for call signaling and IP Telephony. Essential reading for anyone involved in the development and operation of voice or data networks, the third edition has been significantly expanded with brand new chapters on:

• SIP security.
• Services in SIP.
• Presence and instant messaging.
• Peer-to-Peer SIP

Alan B. Johnston is a consulting member of the technical staff at Avaya Inc. and an adjunct professor of electrical engineering at Washington University in St. Louis. He holds a B.E.(Hons) in electrical and electronic engineering from the University of Melbourne, Australia and a Ph.D. in electrical engineering from Lehigh University. He is a co-author of the new SIP specification RFC 3261 and several other SIP-related RFCs.