Analyze and receive alerts for VoIP calls in the system (currently available for ShoreTel).
If a user complains about a poor quality call, it may be due to your network or it may be due to the remote caller's VoIP phone system or a cell phone. Being able to quickly evaluate if the problem is on your side or not can save a lot of troubleshooting pain:
"The call looks perfect here, so the problem must have been due to the remote user."
This tells your users that you really know what's going on with your network and phone system.