@Override
  public void onUserNotAnswer(QBRTCSession session, Integer userID) {
    if (!session.equals(getCurrentSession())) {
      return;
    }
    if (sessionUserCallback != null) {
      sessionUserCallback.onUserNotAnswer(session, userID);
    }

    runOnUiThread(
        new Runnable() {
          @Override
          public void run() {
            ringtonePlayer.stop();
          }
        });
  }