I had two MX800, that one is version 8.3.3 & second one is version 8.3.8. Both of MX800 are under the TMS 15.2.1 management.
My situation is MX800 8.3.3 cloud show the Meeting button, but the MX800 8.3.8 cloud NOT show the Meeting button.
On the TMS, it showed the Connection Error with Description of 'Source Number: Destination Number H323:XXXXX, Cause Code:OK | Destination Number XXXX@abc.com, Cause Code: Disconnected' for the No Meeting endpoint
(Hi UC Experts, any idea on that?)