Cisco Meeting App on Safari does not work on iPhone with iOS 13?

[epicolo]

Hello, we did some tests with a CMS running 2.5.2 with a webbridge public IP directly on internet (not behind Expressway) and an iPad with iOS 12.2 via internet can join a webrtc invitation link using Safari, but different iPhones on the same network running iOS 13 cannot join using Safari.

Does anynoe had similar behavior?

*We are aware of TLS requirements starting on iOS 13 and the webbridge server have a certificate that meets the requirements.

Thanks

[CUCMCiscoUser]

We have the same issue on our on prem CUCM Infrastructure. We use the CMS running on Version 3.0 generate Cisco Meetings via Outlook an TMS Server. 

If i would join a meeting on my iphone (iPhone XS, iOS 14) with the Safari after i click on the Join Meeting Button i get the message "Unable to join call - Check your sttings and try again".

The are no problems to join with windows clients, it works. 

Has Someone an idea?