Enabling telnet in windows 7

AYesterday when I was on my saturday class in kathmandu, I needed to use telnet in order to find the ssh version of some server as the part of recon challenge for my friend. But I found that the windows 7 by default has no telnet client. After returning to KU, I played around with my friends laptop to find the way to enable telnet client.

Just go to the control panel and choose the programs and features option.
There, you'll find the option Turn Windows features on or off.
Check the telnet client and hit Ok.
Now you can use the telnet client in your windows 7. Have fun.