What was the cause for the call setup failure?

Refer to the exhibit.

A technician is reviewing the search history details on a Cisco TelePresence VCS for a recent call that failed.

What was the cause for the call setup failure?
A . A local call policy rule denied the call.
B . The source alias matched an entry in the registration deny list.
C . The originating caller was not authenticated.
D . The source alias origin is unknown.

View Answer

Answer: A