CHAPTER 12TelePresence Call-Signaling Design
Cisco TelePresence uses the Session Initiation Protocol (SIP) for all call signaling. SIP is a peer-to-peer application layer protocol used for establishing, modifying, and terminating sessions between endpoints. It was developed by the Internet Engineering Task Force (IETF) Multiparty Multimedia Session Control (MMUSIC) Working Group and is currently documented in RFC 3261. This chapter assumes some familiarity with SIP. Chapter 7, “TelePresence Control and Security Protocols,” provides a brief overview of SIP. If you are unfamiliar with SIP, review this information before continuing.
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