WTChannelConf.js

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

var conf,
    calls = [];

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

VoxEngine.addEventListener(AppEvents.CallAlerting, function(e) {
  e.call.addEventListener(CallEvents.Connected, handleCallConnected);
  e.call.addEventListener(CallEvents.Disconnected, handleCallDisconnected);
  e.call.answer();
});

function handleCallConnected(e) {
  calls.push(e.call);
  var player = VoxEngine.createTTSPlayer("Channel connected");
  player.sendMediaTo(e.call);
  player.addEventListener(PlayerEvents.PlaybackFinished, function(pevent) {
    VoxEngine.sendMediaBetween(e.call, conf);
  });
}

function handleCallDisconnected(e) {
  for (var i=0;i < calls.length; i++) {
    if (calls[i] == e.call) {
      calls.splice(i, 1);
      break;
    }
  }
  
  if (calls.length === 0) VoxEngine.terminate();
}