What role does the call agent play when using an MGCP gateway?
List the control messages that MGCP uses.
How does MGCP Backhaul function?
What three commands do you need to enable MGCP on a router and identify Cisco CallManager as its call agent?
Why is there a need for DTMF relay in a VoIP network, regardless of the gateway protocol used?
Part I: Voice Gateways and Gatekeepers
Gateways and Gatekeepers
Part II: Gateways
Media Gateway Control Protocol
Session Initiation Protocol
Connecting to the PSTN
Connecting to PBXs
Connecting to an IP WAN
Influencing Path Selection
Configuring Class of Restrictions
SRST and MGCP Gateway Fallback
Using Tcl Scripts and VoiceXML
Part III: Gatekeepers
Part IV: IP-to-IP Gateways
Cisco Multiservice IP-to-IP Gateway
Appendix A. Answers to Chapter-Ending Review Questions