Virtual terminal
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In open systems, a virtual terminal (VT) is an application service that:
- Allows host terminals on a multi-user network to interact with other hosts regardless of terminal type and characteristics,
- Allows remote log-on by local area network managers for the purpose of management,
- Allows users to access information from another host processor for transaction processing,
- Serves as a backup facility.
Source: from Federal Standard 1037C
ITU-T defines a virtual terminal protocol (VT) based on the OSI application layer protocols, which is not widely used on the Internet.