OTHER PROTOCOLS
Things can become quite confusing when examining MGCP and other Internet-based VoIP protocols, described in more detail in Chapter 10. Therefore, before we move to a detailed analysis of SGCP, let's pause for a moment to comment on several other multimedia protocols. They are: (a) The Session Description Protocol (SDP), (b) The Session Announcement Protocol (SAP), (c) The Session Initiation Protocol (SIP), and (d) The Real-Time Streaming Protocol (RTSP).
The Session Announcement Protocol supports the distribution of multicast session parameters to a group of recipients. The Session Initiation Protocol is used to invite a user to take part in a session. The Real-Time Streaming Protocol supports the exchange of real-time information ...
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