Installation of Win 7 telnet and Windows Server 2008 is slightly different, you can do this by the following methods. Click "Start" → "→" "programs", "in programs and features" to find and click "Turn Windows features on or off" into the Windows Feature Settings dialog box. Locate and tick "Telnet client" and "Telnet Server", and finally "OK" to complete the installation at a later moment. In addition to this, we can also install the "TFTP client", "Internet information Service" and so on through the wizard. After the installation is complete, the Telnet service is disabled by default. You also need to perform start → run and enter servcies.msc to open the service Manager. Locate and double-click the Telnet service entry, set it to start manually (more secure, only when needed), and finally start the service OK to exit.
Install Win 7 Telnet