Look at the following exhibit carefully.

You can click the Voice Gateway for the BR2 location to see the output from the debug voice ccapi
inout command and click on 10.1.5.10 to see and search the trace file output. You can also enter a
string in the Search box and click the Find button to search the output. X can be clicked to back to
the item.
As a network technician, you have recently configured a trunk between the Cisco Unified
CallManager cluster at 10.1.5.10 and a CME at a 10.3.130.1. In the testing of this configuration,
you discover that you can complete calls when dialing from ext.2020 to ext.4001, however, a fast
busy can only be received when dialing from ext.4001 to ext.2020.
Please choose the most possible reason of this issue from the following statements.

A.
The h323-gateway voip bind srcaddr 10.3.130.1 command has been omitted from the BR2
configuration.

B.
A transaction rule has been applied that is keeping the call from being completed.

C.
A CSS has been omitted from the trunk configured to BR2.

D.
An incorrect CSS has been applied to the gateway at HQ.