How to create an analogue of Skype or Zoom?

Question

Video broadcast

Hello. I apologize for the possibly stupid question. But how is it possible to create a supposedly analogue of Skype by the type of conference call, tell me what to read about this. Thanks to.

Answer 1

One
and two
I think after these links it will become clear where you can dig

Answer 2

I'm doing this right now... I'm
using Nimble Server.
Telegram: @arag_cf.