Ok, been wondrin for a while why the hell telnet is not available in my Windows 7 workstation. I am using telnet a lot so I did some research. Windows 7 disabled the Telnet by default, so basically, the answer is pretty simple.

Win + R and type appwiz.cpl

Turn Windows features on or off

Scroll down and check the Telnet Client box.

Hit OK and you're done. Enjoy!