No doubt, keeping track of registrations, call setups and the like is essential to VoIP service monitoring. But signaling performance says nothing about the quality a user experiences, when she or he is making a call. Call control and media transport is handled separately—by different layers, different protocols and sometimes even different network elements.
Consequently, we must look at more than one protocol to really understand quality of a VoIP service. SIP for sure. And maybe RTCP, to get some basic data about the streams of a call. And of course RTP, to really understand what is going on, when media travels from A-party to B-party and back.
The by far biggest data volume related to a call is created by RTP packets—which carry the real voice. This makes looking at RTP the most challenging part of VoIP monitoring.
Yet conversely, RTP analytics offer the most valuable insights as well. Complete VoIP analytics therefore needs to combine the views on the control and media plane to unfold the maximum benefit for VoIP service operations.
Some example questions that call for a combined view:
This ability to relate media and control plane results—or network events and experienced quality—is what we call “Dual Visibility”.
Voipfuture Qrystal’s Dual Visibility brings the power and simplicity of a combined view on service quality to service providers, wholesalers, or large enterprises. It delivers the necessary granularity to effectively support troubleshooting. In addition, this granularity is the foundation for highly accurate statistics which allows a broad, but precise view on the overall quality of service.
To cut a long story short: Complete VoIP Analytics deepens your understanding by far more than any singular view on VoIP quality.
In the end, this means more control.
Over network elements.
And over the real service quality your customers get.