Mobicents provides an open source communications platform that allows for building HTML5 web SIP phones and bridging existing SIP infrastructure. This is done using WebRTCComm, a JavaScript library that creates cross-browser web phones with no plugins and communicates with the backend using SIP over WebSockets. SIP over WebSockets adds the browser as another endpoint, supports reusable applications regardless of transport, and allows for convergent applications combining SIP, HTTP, and media. An example is a WebRTC video conferencing architecture with a WebRTC MCU for conferencing.
