What is the reason that an outgoing call succeeds when COR is applied to the incoming dial peer, but no COR is applied to the outgoing dial peer?
A.
The COR list for incoming calls on the incoming dial peer is a superset of COR lists for outgoing calls on the outgoing dial peer.
B.
COR lists for incoming calls on the incoming dial peer are not a superset of COR lists for outgoing calls on the outgoing dial peer.
C.
The outgoing dial peer, by default, has the lowest priority.
D.
The incoming dial peer, by default, has the highest COR priority when no COR is applied.
Explanation:
http://www.cisco.com/c/en/us/support/docs/voice/call-routing-dial-plans/42720-configuring-cor.html
The outgoing dial-peer, by default, has the lowest priority. Since there are some COR configurations for incoming calls on the incoming/originating dial-peer, it is a super set of the outgoing call COR configurations on the outgoing/terminating dial-peer.
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