Many companies and individuals have already deployed large SIP networks with tons of endpoints. With WebRTC becomeming so ubiquitous, it makes sense to adapt for these new types of devices.

In 2012 SylkServer (http://sylkserver.com) allowed for seamless SIP to XMPP interoperability, now we are adding WebRTC as a first class citizen. Using SIP as the core routing and rendezvous protocol and either SIP, XMPP or WebRTC at the edges we can reuse existing SIP insfrastructure with the right gateway in place.