How do you verify active call legs on a gateway?

• A. Reboot the gateway and inspect log files.
• B. Use IOS voice show commands like 'show call active voice brief'.
• C. Check the SNMP MIB for active calls.
• D. Use a GUI to view ongoing calls.

Answer: (B)

Verifying active call legs means getting a real-time view of what the gateway is currently processing in terms of voice connections. The quickest and most reliable way to do this on a Cisco IOS gateway is to use the voice show commands. Running a command like show call active voice brief provides a concise list of all ongoing voice calls and, for each call, shows the individual legs, endpoints involved, and the current state (for example, dialing, ringing, connected, or on hold). This gives you an immediate, authoritative snapshot of which calls are active and how they’re bridged.

Other approaches aren’t as direct or timely. Rebooting the gateway and checking logs might tell you what happened, but it won’t give you a live view of current legs. Checking the SNMP MIB can yield counters or status flags, but it typically doesn’t expose the exact, up-to-the-second leg details you need. A GUI can be helpful if you’re using a management platform, but it may not be available on every gateway or might lag behind the real-time state captured by the CLI. The dedicated show command remains the simplest, most precise method for confirming active call legs.