Configure self hosted nextcloud with cloudflare calls

For Workers & Pages, what is the name of the domain?

What is the issue or error you’re encountering

I am having a serious problem configuring the backend for the nextcloud talk service which uses TURN servers for communication. The configuration of Cloudflare calls is terribly minimal and does not allow any customisation. the signalling server information for WebRTC is missing, and it looks like TURN and TURNS servers do not support standards compliant authentication. Cloudflare Calls API allows WebRTC, but does not support wss:// (the WebRTC signalling used by Nextcloud, which is also a standard). Do you have any idea if this can be configured and how? Or are Cloudflare calls still too new and you have to wait for development to progress so that it doesn’t require reworking the WebRTC logic to make it work.