Exam 300-820 topic 1 question 49 discussion

Actual exam question from Cisco's 300-820

Question #: 49
Topic #: 1

Refer to the exhibit. Calls to locally registered endpoints are failing. At present, there are two endpoints registered locally to this Expressway. An H.323 endpoint with an alias of `EndpointA` is registered, and a SIP endpoint with an alias of `[email protected]` is also registered. How is this issue resolved?

A. The dialplan must be redesigned to use the transforms to convert the alias into SIP URI format and then use separate search rules for each format that needs to be dialed within the local zone.
B. The calls are failing because there are insufficient licenses. Additional licenses must be installed for the Expressway to route these calls.
C. The current search rule does not match the call, so the search rule must be modified to include a SIP Variant of ג€Standards-Basedג€.
D. Calling parties are placing calls with the wrong domain. End-users must be instructed not to use the pod1.local domain as that is owned by the local system. Calls to any other domain would work.

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Suggested Answer: A 🗳️

by Collabinski at Jan. 28, 2023, 5:17 p.m.

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Collabinski

1 year ago

Selected Answer: A

Stripping @domain for dialing to H.323 numbers SIP endpoints can only make calls in the form of URIs - for example name@domain. If the caller does not specify a domain when placing the call, the SIP endpoint automatically appends its own domain to the number that is dialed. So if you dial 123 from a SIP endpoint, the search will be placed for 123@domain. If the H.323 endpoint being dialed is registered as 123, the VCS will be unable to locate the alias 123@domain and the call will fail. https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/expressway/admin_guide/X14-0/exwy_b_cisco-expressway-administrator-guide/exwy_m_dial-plan-and-call-processing.html

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