code: public void send(CEMI frame, BlockingMode mode) throws KNXConnectionClosedException
  	{
  		try {
  			super.send(frame, NONBLOCKING);
  			// we always succeed...
  			setState(OK);
  		}
  		catch (final KNXTimeoutException e) {}
  	}
docs: Sends a cEMI frame to the joined multicast group.
  <p>
  
  @param frame cEMI message to send
  @param mode arbitrary value, does not influence behavior, since routing is always a
  unconfirmed, nonblocking service