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Audio SIP call in one click example

This example allows to place outgoing audio call with one button click using account specified

Code of the example

The path to the source code of the example on WCS server is:


click-to-call.css - stylesheet for the example page
click-to-call.html - page of the example
click-to-call.js - script providing functionality for the example

This example can be tested using the following address:


Here host is the address of the WCS server.

Analyzing the code

To analyze the code, let's take the version of file click-to-call.js with hash 02c8028, which is available here and can be downloaded with corresponding build 2.0.178.

1. Initialization of the API

Flashphoner.init() code

    try {
    } catch(e) {
        $("#notifyFlash").text("Your browser doesn't support WebRTC technology needed for this example");

2. Connection to server.

createSession() code

Object with connection options is passed to the method when session is created

  • urlServer - URL for WebSocket connection to WCS server
  • sipOptions - SIP connection parameters from a hidden form fields
        var url = $('#urlServer').val();
        var sipOptions = {
            login: $('#sipLogin').val(),
            authenticationName: $('#sipAuthenticationName').val(),
            password: $('#sipPassword').val(),
            domain: $('#sipDomain').val(),
            outboundProxy: $('#sipOutboundProxy').val(),
            port: $('#sipPort').val(),
            registerRequired: true
        var connectionOptions = {
            urlServer: url,
            sipOptions: sipOptions

        //create session
        console.log("Create new session with url " + url);
        Flashphoner.createSession(connectionOptions).on(SESSION_STATUS.ESTABLISHED, function(session){

3. Receiving the event confirming successful connection

ConnectionStatusEvent ESTABLISHED code

On this event, outgoing call is created

        Flashphoner.createSession(connectionOptions).on(SESSION_STATUS.ESTABLISHED, function(session){
		    setStatus("Session", SESSION_STATUS.ESTABLISHED);
			//session connected, place call
	    }).on(SESSION_STATUS.DISCONNECTED, function(){
	    }).on(SESSION_STATUS.FAILED, function(){

4. Outgoing call.

session.createCall(), call() code

The following parameters are passed when call is created

  • callee - callee SIP username
  • visibleName - display name
  • localVideoDisplay - <div> element for local display (will be used for Flash Player settings dialog in case of Flash media provider)
  • remoteVideoDisplay - <div> element for remote audio
  • constraints - constraints for the call
  • receiveAudio - set to true to receive audio

  • receiveVideo - set to false to receive audio only

    var constraints = {
        audio: true,
        video: false
	//prepare outgoing call 
    var outCall = session.createCall({
		callee: $("#callee").val(),
		visibleName: "Click To Call",
		localVideoDisplay: localDisplay,
		remoteVideoDisplay: remoteDisplay,
		constraints: constraints,
		receiveAudio: true,
        receiveVideo: false

5. Call hangup

call.hangup() code

        $(this).prop('disabled', true);
    }).prop('disabled', false);
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