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