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Exam 300-080 Question id=4112 Troubleshoot Registration Issues

Refer to the exhibit.
Invite to CUCMfor the number 6500 03212567.002 119:54:34.362 lAppInfo ISIPTcp-wait_SdlReadRsp: Incoming SIP TCP message from 10.64.126.18 on port 25091 index 791 with 1274 bytes: [3385493,NET] INVITE sip:6500@ciscoexam.online SIP/2.0 Via: SIP/2.0/TCP 10.64.126.18:5060;egress-zone=CUCM;branch=z9hG4bK882fc47c9eeb20b5f03861032a512c4f86476.33073954ac66c862ebd093dbc29621d6;proxy-cail-id=503a0192-3207-lle3-Sa26-0010f320f95a;rport Via: SIP/2.0/TLS 172.30.16.17:7001;egress-zorne=TraversalZone;branch=z9hG4bKb823ee50d723aed0c96a71e3d4eeS87bl588.57007d902253db5356f90flld5861c8e;proxy-call-id=5020894c-3207-11e3-add6-010f3207bb4;received=172.30.16.17;rport=7001;ingress-zone=Traversal2one Digit Analysis shows the following 03212591.001 |19:54:34.364 |AppInfo IDigitAnalysis: star_DaReq:daReq.partitionSearchSpace(1e41dc4d-c7bc-6489-4350-d60d6d0de577),filteredPartitionSearchSpaceString(DirectoryURI:P_SYSTEM_TELEPRESENCE:DirectoryURI), partitionSearchSpaceString(DirectoryURI:P_SYSTEM_TELEPRESENCE:Directory URI) 03212591.002 |19:54:34.364 |AppInfo IDigitAnalysis: Host Address=ciscoexam.online DOES NOT MATCH any active CUCM node in this cluster. 03212591.003 |19:54:34.364 |Applnfo IDigitAnalysis: Host Address=ciscoexam.online DOES NOT MATCH top level org domain. 03212591.004 |19:54:34.364 |AppInfo IDigitAnalysis: star_DaReq:Matching SIP URL, Host Domain, host=abc.fcc.acv CUCMsends a SIP 404 not found 08212597.001 |19:54:34.365 |AppInfo ISIPTcp-wait_SdlSPISignal: Outgoing SIP TCP message to 10.64.126.18 on port 25091 index 791 [3385500,NET] SIP/2.0 404 Not Found Via: SIP/2.0/TCP 10.64.126.18:5060;egress-zone-CUCM;branch=z9hG4bK882fc47c9eeb20b5f03861032a512c4f86476.33073954ac66c862ebd093db c29621d6;proxy-call=503a0192-3207-lle3-8a26
Inbound calls via a SIP trunk to the Cisco IP phones that are registered on Cisco Unified Communications Manager are failing. Based on the Cisco CallManager service trace, which action should you take to fix the issue?"

A. Add xyz.com in the Organization Top Level Domain field on Cisco Unified Communications Manager.
B. Set the Incoming Transport Type to TLS on the SIP trunk security profile that is assigned to the SIP trunk.
C. Check whether the calling search space for incoming calls on the SIP trunk has access to the partition of the Cisco IP phone that is being called.
D. Add ciscoexam.online in the Organization Top Level Domain field on Cisco Unified Communications Manager.