In a network with two Cisco Unified Communications Manager clusters, Phone 1 on Cluster A dials jsmith@cisco.com to reach Phone 2 on Cluster B, and the call fails.
What are two possible causes for this problem? (Choose two.)
A. Cluster A does not have a SIP trunk to reach Cluster B.
B. Cisco UDS is not enabled on Cluster B.
C. Cluster B does not have a SIP trunk to reach Cluster A.
D. The calling space on Phone 1 contains the partition with a pattern that matches jsmith@cisco.com
E. Cisco UDS is not enabled on Cluster A.
Answer: AC