public void enableVoiceCallBroadcastReceiver() {
  voiceCallBroadcastReceiver = new VoiceCallBroadcastReceiver(SIPAddressEditText, callStatusTextView);
  voiceCallIntentFilter = new IntentFilter();
  voiceCallIntentFilter.addAction(NgnInviteEventArgs.ACTION_INVITE_EVENT);
  registerReceiver(voiceCallBroadcastReceiver, voiceCallIntentFilter);
}