Coturn service was running twice. I have no other services running on these ports.
I just wanted to askin general if you people are able to call each other per Smartphone especially when you are in different countries and running a separate coturn server?
I don’t get this to work and I’m slowly looking for other solutions but I’m very sad with this decision as I really like Nextcloud. But this absolutely unfunctional calling problem on Android Phones is a gamebraker.