private void onSystemMessage(QAMessage msg)
{
  QATextMessage    t_msg;
  int              msg_type;
  String           network_adapters;
  String           network_names;
  String           network_info;

  t_msg = (QATextMessage)msg;
  if( t_msg != null )
  {
      // Evaluate message type.
      msg_type = t_msg.getIntProperty( MessageProperties.MSG_TYPE );
      if( msg_type == MessageType.NETWORK_STATUS_NOTIFICATION )
      {
          // Handle network status notification.

      }
  }
}