Video Chat - One-to-One using WEBRTC with STUN and TURN servers

We are developing a web application using ASP.NET CORE on UBUNTU LINUX server. We want to implement Video chat 1O1 in our app. In this context, we are looking for an expert help in developing Video Chat 1O1 using WebRTC with STUN and TURN servers. Here is the layout attached and you need to develop it exactly the same and it should support mobile app (android and iOS) Expectations : - Should not have any latency issues - Quality of Video and Audio should be good - Developer should provide the complete source code - Should help us in Installation and Configurations - Should also support for integrating this solution with our webapp and mobile app. Features : 1. 1O1 Video chat 2. Web Chat support 3. Bell Ring and Accept or Refuse 4. Camera - Capture Image 5. Screen Sharing 6. Recording. User will use it only if it is required. NOTE : Should provide complete source code and help in integration of the code in our web app and mobile app.