Refer to the exhibit.
A call made through the Cisco Unified Border Element to pilot 2000 is failing. What is causing the call to fail?
A. The Cisco Unified Border Element is not receiving a response to its OPTION keepalives.
B. The destination pattern is incorrect for the dialed number.
C. VAD was not disabled on the outgoing dial peer.
D. No codecs are configured on the dial peers.
The SIP Out-Of-Dialog OPTIONS (OODO) Ping Group feature is an existing mechanism that is used by
CUBE to monitor the status of a single SIP dial-peer destination (keepalive). A generic heartbeat mechanism
allows you to monitor the status of SIP servers or endpoints and provide the option of marking a dial peer as
inactive (busyout) upon total heartbeat failure
if you enable debug voip dialpeer inout you can see that router actually shortlist dial-peer which are also busyout.. But if you have wrong destination pattern then it wont be selected at all.. Hence B is correct answer.. destination pattern needs to be 2…
If destination pattern was 2… then answer would have been A