jssip 一个基于webrtc的web sip电话功能。可以连接websocket-JsSIP: The Javascr ipt SIP Library Runs in the browser and Node.js SIP over WebSocket (use real SIP in your web apps) Audio/video calls (WebRTC) and instant messaging Lightweight!

实现了JSSIP 和 ESL 方式连接FreeSwitch(Realize jssip and ESL connection to freeswitch)