Dualog Connection Suite - Test connectivity towards Dualog Cloud

INTRODUCTION

Telnet can be used to verify that the Dualog Cloud is reachable from a specific computer such as the Dualog server onboard a ship.

ENABLE TELNET ON THE SOURCE PC (WINDOWS 10/11 AND SERVER)
First, we need to ensure that telnet is available.

1. Click on the Windows start menu and type: Turn Windows features on or off
   
   
2. Click on the Menu Item to launch the Windows Features Dialogue
   
    
3. Scroll down top the "Telnet Client" option and make sure it is ticked
   
    
4. Click OK.
5. Telnet is now ready for use.

TEST CONNECTION TO DUALOG CLOUD

The following Telnet test has to be performed on the computer where the Dualog Connection Suite software is installed. Please ensure that the communication equipment that is being tested is correctly connected to the ship network and that it is ready to transmit data to shore.

1. Click on the Start Button and type CMD 
2. Click on the the Command Prompt menu item
   
    
3. A Command prompt window should open. 
    
4. To test our two main shore IPs and ports, type the following:
   • telnet 93.188.232.240 4550
   • telnet 93.188.232.39 109
      
5. Expected results:
    
   • A successful Telnet test will show "USRUSRUSR" after a little while.
     
      
   • An unsuccessful Telnet test may result in:
     • An error message : "Could not open connection to the host, on port: Connect failed"
     • A blank unresponsive window

HOW TO USE TELNET

The most common reason of a failed result is that the ship cannot communicate to the Dualog shore services due to the Airtime Provider having issues or actively blocking Dualog. 

Once it is ascertained that the communication hardware on board is correctly connected, call the Airtime Provider and have them check if your equipment is "open" against our shore servers.

If they ask what our addresses or IPs are, tell them the following:

• 93.188.232.38 port 80
• 93.188.232.39 port 109

• 93.188.232.40 port 110