RTCPeerConnection shim i an implementation of the W3C RTCPeerConnection API as a shim ontop of the ORTC API.

The RTCPeerConnection API enables audio and video communication between peers. It performs signal processing, codec handling, peer-to-peer communication, security, and bandwidth management.

Object Real-Time Communications (ORTC) provides a powerful API for the development of WebRTC based applications.

WebRTC (Web Real-Time Communication) is a project that provides web browsers and mobile applications with real-time communication (RTC) via simple application programming interfaces (APIs).