Virtual terminal

In open systems, a virtual terminal (VT) is an application service that:


 * 1) Allows host terminals on a multi-user network to interact with other hosts regardless of terminal type and characteristics,
 * 2) Allows remote log-on by local area network managers for the purpose of management,
 * 3) Allows users to access information from another host processor for transaction processing,
 * 4) Serves as a backup facility.

PuTTY is an example of a virtual terminal.

ITU-T defines a virtual terminal protocol based on the OSI application layer protocols. However, the virtual terminal protocol is not widely used on the Internet.