Chapter 5 Examining VoIP Gateways and Gateway Control Protocols

To provide voice communication over an IP network, Real-time Transport Protocol (RTP) sessions are created. These sessions are dynamically created and facilitated by one of several call control procedures. Typically, these procedures also embody mechanisms for signaling events during voice calls and for managing and collecting statistics about the voice calls. Several types of protocols exist within Cisco Unified Communications networks. Network engineers need to know all these protocols, how they can be used, and where the advantages and disadvantages are in order to select the best protocol for a specific environment.

This chapter focuses on protocols that are used in Cisco Unified ...

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