Reports for Troubleshooting › Calls Overview › Understanding Uncorrelated Call Legs

Understanding Uncorrelated Call Legs

When intermediate devices handle a call, that call is displayed in the Calls Overview table as multiple call legs. The following scenario is an example:

First Leg

Call ID 6381

Origination Time: 06/12/2009 18:23:18

Origination Number: 15225678910

Origination Location/Media Device: 172.12.3.45

Destination Number: 1718

Destination Location/Media Device: mediator01.ca

Duration: 37 seconds

Media Type: Audio

Second Leg

Call ID 6382

Origination Time: 06/12/2009 18:23:18

Origination Number: 15225678910

Origination Location/Media Device: mediator01.ca

Destination Number: Jack.Smith@ca.com

Destination Location/Media Device: Austin HQ

Duration: 37 seconds

Media Type: Audio

The separate legs represent one call, as you can see from the identical Origination Times, Origination Numbers, and Durations. They are shown in separate table rows because the call created distinct legs:

• One leg traveled between 5225678910 (the Origination Number in the PSTN) and the Mediation Server (mediator01), which translated it for the VoIP network.
• The other leg traveled between the Mediation Server and Jack (the destination endpoint).

The separate metrics are useful for determining the location of a performance issue, at the Mediation Server, for example.

The presence of quality metrics in a Call Quality Metrics table depends on information that is available from the endpoints that handled a call leg.