A case for SIP in Javascript

This article presents the challenges and compares the alternatives to interoperate between SIP-based systems and the emerging standards for web real-time communication (WebRTC). We argue for an endpoint- and web-focused architecture, and present both sides of the SIP in JavaScript approach. Until WebRTC has ubiquitous cross-browser availability, we suggest a fallback strategy for web developer: detect and use HTML5 if available; otherwise, fall back to a browser plugin.