Endpoints are configured for both H.323 and SIP using the same URI and Cisco VCS settings, but the endpoints register only as H.323 endpoints.
What is causing this issue?
A . A firewall is blocking all traffic from the endpoints to the Cisco VC
C . The Cisco VCS has no SIP domains configured.
D . The Cisco VCS is blocking the endpoints because of duplicate ID entries.
E . The endpoints do not have the SIP option key installed.
F . SIP does not work, because SIP is used for Cisco Unified Communications Manager registration only.
Answer: B