Chapter 6. Signaling Interfaces and MGCP Overview
Chapter 2, “PacketCable Functional Components,” introduced the importance of call signaling. Calls are set up, modified, and torn down in a PacketCable VoIP network by call signaling. Because the PacketCable architecture consists of multiple components, they need to communicate call information using some sort of protocol. This chapter introduces you to Media Gateway Control Protocol (MGCP), the foundation of the Network-based Call Signaling (NCS) and Trunk Gateway Control Protocol (TGCP) protocols used in PacketCable. In Chapter 1, “PacketCable Overview,” you learned that one of the goals when developing the PacketCable architecture was to use existing protocols and standards where possible. ...
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