@Arunkumar Sundaram Thanks for sharing the requested information.
I have looked at the backend logs for above shared specific call id and we see that call got disconnected due to MediaWhitelistingIssue/410.0/3112.0
issue,
As mentioned in the documentation Prepare your organization network for Azure Communication service make sure that you have configured your organization firewall by whitelisting the mentioned IP's.
If you are still facing the issue, I would suggest you raise support ticket to Azure communication service team to check and assist you further.
Hope this helps,