Active Calls displays whether call is secure, direct media or relayed, whether SRTP is done by VCM or CPU on IP500 V2. Linux servers always use CPU.

For capturing SRTP traces, set filters to default trace options plus:

During calls, in Status[S]RTP Sessions window, column secure describes whether SRTP is used in that call and whether it is done by VCM or CPU on IP500 V2. Use the Show SRTP button to display further details on SRTP sessions.