Telnet connections were developed to control a PC remotely, something that can still be done. Even though it is fair to recognize that SSH protocol has imposed over this kind of communication at a technical/professional level and the capacity of transferring data of any network has brought about the popularization of VNC clients, leaving Telnet connections behind.
AnzioWin allows remote connections with different versions of Telnet, opening a useful console with some buttons with preset actions. The terminals that AnzioWin supports are: VT420, VT320, VT220, VT100, Linux, SCOANSI and AT386.
So if you have to connect via Telnet, download AnzioWin as it's an application that is more than capable of performing this task.