Windows 7 does not have the Microsoft Telnet client installed by default.
An administrators can find it easily by typing ‘telnet‘ on the Windows 7 command line.
Click the Start menu and click on
Control Panel > Programs > Programs and Features
and select Turn Windows features on or off menu
Here, scroll down the scroll bar until Telnet Client do not come.
Check the box and click OK.
And now, type the ‘telnet‘ command on the Windows 7 command line.