If your computer does not yet have the Microsoft Telnet Client enabled, you will get a warning message when attempting to launch 'telnet' from the Windows Command Prompt that says "'telnet' is not recognized as an internal or external command, operable program or batch file."
In order to enable the built-in Microsoft Telnet Client, follow the step-by-step instructions below.
Step 1) Open 'Control Panel', then click on 'Programs'
Step 2) Click on 'Turn Windows features on or off'
Step 3) Select the 'Telnet Client' option from the list, then click 'OK'
Step 4) Wait for Windows to apply the changes and activate the Telnet Client, then click 'Close' once completed
Step 5) Open a Windows Command Prompt, type 'telnet' then press [Enter]
Step 6) In the new Telnet window, type the letter 'o' followed by the IP address of the target device, then press [Enter]
You can now successfully use the Microsoft Telnet Client to open a telnet session to a switch or Just Add Power device.