An Endpoint Has a SIP Trunk Configured Between Cisco Unified

question 6

Multiple Choice

An endpoint has a SIP trunk configured between Cisco Unified Communications Manager (CUCM) and a Cisco VCS cluster. When a call is made from a Cisco TelePresence System EX60 that is registered to the Cisco VCS to a Cisco IP Phone 9971 that is registered to CUCM, it rings. But upon picking up the call, a busy tone is heard. What should be checked to resolve this issue?

• A) CUCM zone on the Cisco VCS.
• B) SIP trunk and phone region settings.
• C) SIP trunk registration.
• D) authentication on the SIP trunk.

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