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Exam 300-080 Question id=4099 Troubleshoot Call Control Discovery and ILS

Refer to the exhibit.
28022445.002 |16:03:40.531 |Applnfo |Digit Analysis: star_DaReq: Matching SIP URL, Alphanumeric User, uri=JOE@ciscoexam.online 28022445.003 |16:03:40.531 |Applnfo |Digit Analysis: star_DaReq: Matched URI in remoteroutingpatterntable.uri = JOE@ciscoexam.online, routeString=Americas 28022445 004 |16:03:40 531 |Applnfo |star_DaReq: Attempt Match on Route String Host: Americas 28022445.005 |16:03:40.531 |Applnfo |star_DaReq: new ils callableEnpoint 28022445 006 |16:03:40 531 |Applnfo |star_DaReq: sendDMPidReq 28022446.000 |16:03:40.531 |SdlSig |DmPidReq |initialized |DeviceManager(2,100,205,1) |Da(2,100,211,1) |2,100,14.1042.580^172.24.18.24^SEP1CDF0F772424 |[T:N-H:0,N:0,L0,V:0,Z:0,D:0] Cepn=ld=3832024920 28022447 000 |16:03:40 531 |SdlSig |DmPidErr |wait |Da(2,100,211,1) |DeviceManager(2,100,205,1) |2,100,14,1042.580^172.24.18.24^SEP1CDF0F772424 |[R:N-H:0,N:0,L:0,V:0,Z:0,D:0] Cepn=ld=3832024920 Pid=0,0,0,0 28022448 000 |16:03:40 531 |SdlSig |DaRes |setup_da |Cdcc(2,100,219,5315) |Da(2,100,211,1) 2,100,14.1042.580^172.24.18.24^SEP1CDF0F772424 |[R:N-H:0,N:0.L:0,V:0,Z:0,D:0] CI=37720843 Block NoPotentialMatchesExist OnNetpattemUsage=28requestlD=0 28022449 000 |16:03:40 531 |SdlSig |CcDisconnReq
A network administrator in Ciscoexam recently configured ILS in the network. The administrator attempted a call to Joe’s SIP URI (JOE@ciscoexam.online), but the call failed. The administrator collected Cisco CallManager traces using Cisco Unified Communications Manager RTMT. What should the administrator do to solve this issue?

A. Create a route pattern for "americas" to route out the SIP trunk that is configured for the remote ILS cluster.
B. Joe’s phone is currently using the SIP protocol. Change the protocol to SCCP.
C. Use the utils dbreplication reset all command to synchronize databases between ILS clusters.
D. Check the "MTP Required" check box on the ILS trunk.