What do the acronyms UAC and UAS stand for? Define the difference between the two entities.
Name five types of SIP servers, and describe what they do.
Name the five types of SIP methods that Cisco routers can both generate and respond to. What is the purpose of each one?
What command configures a dial peer to use SIP in its communication with its VoIP peer?
How does CallManager 4.x interact with a SIP gateway?
What additional SIP capabilities does CallManager 5.x add?
Which Layer 4 protocol does SIP use by default, and what is the default port?
What is the function of the SDP in SIP call setup?
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