How does this change the trace output?

You have configured the Enable Keep Alive check box under Trace Filter Settings. How does this change the trace output?

A.
It adds TCP socket numbers between the endpoint and Cisco Unified CallManager for the session.

B.
It maps the unique TCP handle for the endpoint to the MAC address of the endpoint in the trace output.

C.
It adds the IP address of the endpoint in hex.

D.
It adds the SCCP messages and all fields sent as part of that message.