My phone is an iPhone XR.
when I turn off my wifi, and activate the UCS app, the audio stops working even though I do get connection to the phone server located remotely.
when I access with my wifi, through the internet , all works well
i know if audio ports are turned off on a net work router, the audio stops on the wifi.
are there audio ports that are of a concern on the data side of internet acces through FIDO?