want to know the call signaling protocol your VoIP application uses, and
be sure to capture all call-setup information.
There are four common
call signaling protocols: H323, Cisco Skinny, SIP, and MGCP. This is
helpful to know when applying filters and running reports in Observerģ.
The most common problem
with VoIP monitoring is failing to capture all the call-set up
information. When this happens, Observerís Expert Analysis canít match
up the RTP stream to the correct call, and wonít provide details on a
With complete setup info
captured, go to VoIP
Events under Expert Data, where
Observer displays a summary of call metrics including jitter, packet loss,
R-Factor and MOS scores. Clicking on the VoIP Events Call tab
lists individual calls in a browsable tree. By clicking on the calls
listed on the left side of the display, you can break each one down by
direction and stream of RTP/RTCP packets.
Click on VoIP Events Expert within the Observer for more information.