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Review Questions

  1. What do the acronyms UAC and UAS stand for? Define the difference between the two entities.

  2. Name five types of SIP servers, and describe what they do.

  3. Name the five types of SIP methods that Cisco routers can both generate and respond to. What is the purpose of each one?

  4. What command configures a dial peer to use SIP in its communication with its VoIP peer?

  5. How does CallManager 4.x interact with a SIP gateway?

  6. What additional SIP capabilities does CallManager 5.x add?

  7. Which Layer 4 protocol does SIP use by default, and what is the default port?

  8. What is the function of the SDP in SIP call setup?

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