Cisco WebEx CVI Integration with Microsoft Team ( intermittently call disconnecting issue)

[Navnath7878]

Hello Team,

I need your help regarding WebEx Cloud Video Interop (CVI) intermittently call disconnecting issue.

We refer following deployment & roadmap docs to run this CVI solution

1. https://www.cisco.com/c/en/us/solutions/collateral/collaboration/webex-teams/at-a-glance-c45-743982.html  

2. https://help.webex.com/en-us/nffx8kj/Deploy-the-Cisco-Webex-Video-Integration-for-Microsoft-Teams 

3. https://www.cisco.com/c/dam/m/cs_cz/training-events/webinars/tech-club-webinars/2020-08-17-techclub-collab-min.pdf 

4. https://help.webex.com/en-us/nxz79m5/Add-Verify-and-Claim-Domains

5. https://help.webex.com/en-us/notkgfab/Configure-Expressway-for-Mutual-TLS-Authentication#id_133282

6. https://docs.microsoft.com/en-us/microsoftteams/cloud-video-interop 

*Current Call flow:

VC endpoints -> CUCM --> Expressway C -> Expressway E --> Firewall -->Internet ---> WebEx Cloud.

++ We don't have any issue with normal WebEx Call, Zoom Call, Bluejeans call and MS Teams call.

++ only issue with the WebEx CVI.

++ All VC endpoints are belong to Cisco WebEx Series, Telepresence Series and etc.

++ This is pure on premise setup.

++ We installed WebEx CVI licenses on Control Hub.

++ Domain Verification also done.

++ Installed Quovadis Root CA Cert on Expressway E node.

++ Now, we are not considering OBTP feature for this setup. So, we not installed WebEx Edge for device and WebEx Device connector as well.

++ in our setup, there is no any cloud register and cloud aware VC endpoints.

Any comments and suggestion will be appreciated & helpful for me

Thanks

Navnath

[manipandey]

Check Network and firewall

https://help.webex.com/en-us/WBX000028782/Network-Requirements-for-Webex-Teams-Services
https://help.webex.com/en-us/WBX264/How-Do-I-Allow-Webex-Meetings-Traffic-on-My-Network#id_134996
→ Software Version for VC Endpoint : CE9.14.3 onward and Call Control Infrastructure should run Expressway Version 12.6.2

Overall deployment How to guide reference link : https://help.webex.com/en-us/nffx8kj/Deploy-the-Cisco-Webex-Video-
Integration-for-Microsoft-Teams

If all is correct then do open a TAC case as this is TAC supported.

hth

Thanks