Missing VCS/X call legs with an endpoint initiated call to Webex

Question:

Typically if we see an endpoint initiated call, we should see entries for VCS/X in the call data with the endpoint entry. Recently we have seen the case where an endpoint calls out to a cloud provider (Webex/Pexip) and there were no VCS/X call legs. Is this expected behaviour?

Answer:

In some cases the answer is yes. The easiest way to check is to go to CPMM-Calls DS and sort based on Time Started. You should see call records, along with endpoint records you can match up, as shown in the screenshot below:

Open the call record, and look for destDeviceName. As shown in this call record, we are using a Hybrid\_Media\_SIP\_Trunk:

In this case, the results is technically correct, since we are using the Video Mesh for handling the calls.

Does a video mesh node "cascade" two meetings? All internal callers get hosted on the mesh node and all external get hosted on the Webex Meeting platform? - Yes. CMS and Pexip both have out of band management for cascading.

Is the cascade is done with direct registration to Webex, thus we don't see traffic over the VCS? - Yes exactly, especially if the endpoints are registered to Webex. I believe Webex tells the endpoint to make an IP call to the video mesh node.

For more information on Vyopta Cisco Support and Services Desk, please refer to our CPM Monitoring Dashboard article.