You are troubleshooting why a user cannot make calls to the PSTN. You are reviewing trace files
and you have found where the user’s IP phone initiates the call but you never see the call go out
the gateway. What is the next step in troubleshooting this issue?

A.
Look in the SDL trace file to see if there is a signal to another Cisco Unified CallManager node
with the same time-stamp.

B.
Look in the SDL trace file to see if there is a signal to another Cisco Unified CallManager node
with the same TCP handle.

C.
Look in the IP Voice Media Streaming App trace file to see if an MTP was invoked.

D.
Look in the MGCP trace file to determine which MGCP gateway the call was sent to.