code: private void checkIfAsteriskRunning(AsteriskSettings asteriskSettings) throws UnknownHostException, IOException
      {
          try (Socket socket = new Socket())
          {
              socket.setSoTimeout(2000);
  
              InetSocketAddress asteriskHost = new InetSocketAddress(asteriskSettings.getAsteriskIP(),
                      asteriskSettings.getManagerPortNo());
              socket.connect(asteriskHost, 2000);
          }
  
      }
docs: This method will try to make a simple tcp connection to the asterisk
  manager to establish it is up. We do this as the default makeConnection
  doesn't have a timeout and will sit trying to connect for a minute or so.
  By using method when the user realises they have a problem on start up
  they can go to the asterisk panel. Fix the problem and then we can retry
  with the new connection settings within a couple of seconds rather than
  waiting a minute for a timeout.
  
  @param asteriskSettings
  @throws UnknownHostException
  @throws IOException