Refer to the exhibit.
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 vcs.abc.org in the Organization Top Level Domain field on Cisco Unified Communications Manager.
Answer: C