P2P full-fledged voice client?

Question

Computer networks

Is there a full-fledged voice client (client application), preferably with encryption and noise suppression, where you can set up your own server to initially negotiate the participants' IP addresses?
Select an additional mode as client-server for if you have your own processing server.
Use proxy mode.
Is there a candy like that?

Answer 1

Nextcloud+nextcloud Talk module