Using Wireshark's features for telephony and multimedia analysis
First, let's see what tools are provided by Wireshark for monitoring voice, video, and multimedia.
Getting ready
While facing problems with voice calls, video-conference calls, or other multimedia sessions, connect your laptop with Wireshark and port mirror one of the following devices as shown in the following diagram:
Follow these steps to use Wireshark's features for telephony and multimedia analysis:
Monitor the local or remote clients (1) in cases where you suspect a specific client problem.
Monitor the local or remote IP PBX system (2) when you suspect a central problem that influences the entire IP Telephony network.
Monitor the connections to the router (3 and 4) while suspecting an interoffice connectivity problem.
Monitor the firewall on the LAN port (5) or on the connection to the service provider (6). This connection will usually be over the Internet, but can also be on a direct line to the provider.
How to do it...
In the...
