WTUserConf.js

// User Conference
require(Modules.Conference);
require(Modules.Player);

var conf,
	user_call,
	channel_calls = [],
	caller_id,
	display_name,
    default_channel_ids;

VoxEngine.addEventListener(AppEvents.Started, function (e) {
	conf = VoxEngine.createConference();
});

VoxEngine.addEventListener(AppEvents.CallAlerting, function (e) {
	user_call = e.call;
	caller_id = e.callerid;
	display_name = e.displayName;
    default_channel_ids = e.headers['X-default-channel-ids'];
	e.call.addEventListener(CallEvents.Connected, handleCallConnected);
	e.call.addEventListener(CallEvents.Disconnected, handleCallDisconnected);
	e.call.addEventListener(CallEvents.MessageReceived, handleMessageReceived);
	e.call.answer();
});

function handleMessageReceived(e) {
	var result = JSON.parse(e.text);
	switch (result.event) {
	case "join_channel":
		var call = VoxEngine.callConference("channel_" + result.name, caller_id, display_name);
		call.addEventListener(CallEvents.Connected, handleChannelConnected);
		call.addEventListener(CallEvents.Disconnected, handleChannelDisconnected);
		call.addEventListener(CallEvents.MicStatusChange, handleChannelAudio);
		call.handleMicStatus(true);
		channel_calls.push(call);
		break;
	case "leave_channel":
		for (var i = 0; i < channel_calls.length; i++) {
			if (channel_calls[i].number().replace("channel_", "") == result.name) {
				channel_calls[i].hangup();
			}
		}
		break;
	case "choose_channel":
		for (i = 0; i < channel_calls.length; i++) {
			if (channel_calls[i].number().replace("channel_", "") == result.name) {
				user_call.sendMediaTo(channel_calls[i]);
			}
			if (channel_calls[i].number().replace("channel_", "") == result.prev) {
				user_call.stopMediaTo(channel_calls[i]);
			}
		}
		break;
    }
}

function handleCallConnected(e) {
	// Connect the user to his conference
	var player = VoxEngine.createTTSPlayer("Conference connected");
	player.sendMediaTo(conf);
	VoxEngine.sendMediaBetween(e.call, conf);
	// Make outbound calls to channels user is subscribed to
    channel_ids = default_channel_ids.split(',');
    for (var i = 0; i < channel_ids.length; i++) {
      if (channel_ids[i].length === 0) {
        continue;
      }
      var call = VoxEngine.callConference("channel_" + channel_ids[i], caller_id, display_name);
      call.addEventListener(CallEvents.Connected, handleChannelConnected);
      call.addEventListener(CallEvents.Disconnected, handleChannelDisconnected);
      call.addEventListener(CallEvents.MicStatusChange, handleChannelAudio);
      call.handleMicStatus(true);
      channel_calls.push(call);
    }
}

function handleCallDisconnected(e) {
	// Stop conference if user disconnected
	VoxEngine.terminate();
}

function handleChannelAudio(e) {
	// Send info about channel audio
	user_call.sendMessage(JSON.stringify({
		event: "channel_activity",
		name: e.call.number().replace("channel_", ""),
		active: e.active 
	}));
}

function handleChannelConnected(e) {
	// Channel with name ALL was connected successfully
	user_call.sendMessage(JSON.stringify({
		event: "channel_connected",
		name: e.call.number().replace("channel_", "")
	}));
	// Sending media from the channel to user
	e.call.sendMediaTo(conf);
	//VoxEngine.sendMediaBetween(conf, e.call);
}

function handleChannelDisconnected(e) {
	user_call.sendMessage(JSON.stringify({
		event: "channel_disconnected",
		name: e.call.number().replace("channel_", "")
	}));
}