[germanier]

It's not (see the list in the sibling comment). To get certified you need to transport the video/audio stream peer-to-peer between the clients only and end-to-end encrypted, see § 5 of the agreement https://www.kbv.de/media/sp/Anlage_31b_Videosprechstunde.pdf The regulatory bodies took some time to understand the issues and this is why it took so long until it arrived at all.

Private consultations not billed through public insurance is not quite as regulated though.

[riedel]

Thanks for pointing out. I thought the false claim of E2EE was exactly the reason. I got the false (?) info from my neighbor working for a large AT provider. They are making money exactly with such regulational requirements, so I am really puzzled on the actual state of affairs.