Twilio Client (https://www.twilio.com/webrtc) does this through just JavaScript and webrtc, using Twilio as the bridge. granted you need to wire up to the JavaScript, but it's fairly simple.
Do they have a WebRTC based service for users (not for developers) similar to Google Talk / Hagnouts phone calling which doesn't necessarily create a dedicated phone number for you, but allows calling other phones? I'm not interested in building my own service using their API, I want simply to use one like that without a need to debug weird issues in native plugins.
