How to implement a voice(and later video)chat between Vr devices and an angular frontend?

Hy, I'm working on an application that connects Vr devices (unity) with angular frontends by sending data to a Asp.net Core 3.0 Api.

Well, The whole connection is working by using SignalR Core to send json objects over. But one of the new requirements is that the both clients can comunicate with each other by using voice chat (and later video). In my research I have found that SignalR is not created to make these kind of calls.

We also found that CometChat is only for frontend and not for asp.net core or Vr devices. Agora sends the voice data to there own servers and then back but because it is sensible data it Must remain on our own servers (so asp.net core 3.0).

Any Idea's?

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