• 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!
• Easy to use and powerful user API
• Works with OverSIP, Kamailio, Asterisk. Mobicents and repro (reSIProcate) servers (more info)
• Written by the authors of RFC 7118 "The WebSocket Protocol as a Transport for SIP" and OverSIP

Starting from 3.0.0, JsSIP no longer includes the rtcninja module. However, the jssip-rtcninja package is based on the 2.0.x branch, which does include rtcninja.

• For questions or usage problems please use the jssip public Google Group.

• For bug reports or feature requests open an Github issue.

The following simple JavaScript code creates a JsSIP User Agent instance and makes a SIP call:

// Create our JsSIP instance and run it:

var socket = new JsSIP.WebSocketInterface('wss://sip.myhost.com');
var configuration = {
  sockets  : [ socket ],
  uri      : 'sip:alice@example.com',
  password : 'superpassword'
};

var ua = new JsSIP.UA(configuration);

ua.start();

// Register callbacks to desired call events
var eventHandlers = {
  'progress': function(e) {
    console.log('call is in progress');
  },
  'failed': function(e) {
    console.log('call failed with cause: '+ e.data.cause);
  },
  'ended': function(e) {
    console.log('call ended with cause: '+ e.data.cause);
  },
  'confirmed': function(e) {
    console.log('call confirmed');
  }
};

var options = {
  'eventHandlers'    : eventHandlers,
  'mediaConstraints' : { 'audio': true, 'video': true }
};

var session = ua.call('sip:bob@example.com', options);

Want to see more? Check the full documentation at https://jssip.net/documentation/.

Check our Tryit JsSIP online demo:

• tryit.jssip.net

• jssip.net

• As Node module: $ npm install jssip
• Manually: jssip.net/download

• Main author. Core Designer and Developer.
• jmillan@aliax.net (Github @jmillan)

• Core Designer and Developer.
• ibc@aliax.net (Github @ibc)

• Core Designer.
• saghul@gmail.com (Github @saghul)

JsSIP is released under the MIT license.