Chapter 22. Routing and Authentication
This chapter provides an in-depth discussion of the fundamental technologies that Microsoft Office Communications Server 2007 R2 uses. This chapter covers Session Initiation Protocol (SIP), SIP routing, Globally Routable User Agent Uniform Resource Identifier [URI] (GRUU), and authentication.
SIP is an Internet Engineering Task Force (IETF) standard (Request for Comment [RFC] 3261). SIP is an application-layer signaling protocol used for signaling an incoming call, terminating a call, placing a call on hold, joining an audio/video (A/V) conferencing, ...
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