VNQM 4.2 - Call Manager CDR

Question

We are using VNQM 4.2 and Call Manager 8.51 for CDR collection.

We can see the records just fine. However, the majority of the records (90%) have the MOS score , Jitter, etc. as unsupported or NA

Anyone have any ideas on what is causing this condition?

Thanks,

Brady-

h_1 · Answer

Ok, that's good to know and it makes sense for data coming from the CDR search tool.  So when a voice gateway or voice mail device reports unsupported is it possible to turn on the CDR/CMR feature on these devices in your experience or is this data only collected from phones?

As far as the path detail object that I posted above.  This must use an IP SLA operation to pull its data.  I would think this would be useless without the ability to at least use the call manager as an ip sla responder.

Thanks for your help,

Eric

HolyGuacamole · Answer

IP SLA operations are unrelated to MOS score reporting of actual calls. IP SLA calls are simulated calls between 2 IP SLA capable Cisco devices, whereas the CMR/CDR logs show actual call quality. CCM may not be logging jitter, latency and packet loss for voicemail and soft phone calls in the first place

h_1 · Answer

Brady,

What you might be seeing is that the calls with MOS scores are from voip phone to voip phone and the calls that have no MOS score or any other metrics are calls from a phone to the Call manager or voicemail server.   I have also noticed that soft-phone calls aren't reporting MOS info.

I have the same concern and I assume that it is because no IP-SLA operations are configured on the Call Manager.  Does anyone out there know if it is possible to either configure a Cisco Call Manager to use IP SLA operations or at the least make it a responder for IP SLA operation?

Thanks,

Eric