OSI virtual terminal service

The OSI Virtual Terminal Service (VTS) is one of several application-oriented communication services being provided by protocols operating in the Application Layer of the Open System Interconnection Environment. There will be several Virtual Terminal services and protocols, each catering to a different class of distributed terminal service. Division of the VTS into classes of service allows more timely, economical, and efficient support of distributed terminal service, both now and for the future. Current work is concentrating on the Generic Virtual Terminal Protocol and the Basic Class Virtual Terminal Protocol. The Generic Virtual Terminal Service and Protocol establishes the general approach to providing all classes of VTS and sets the style for generating Virtual Terminal Protocols (VTP´s) for Specific classes of terminal use. The Basic Class VTP is the first OSI VTP being developed by the International Organization for Standardization, and is intended to provide distributed terminal access for a wide range of nonsophisticated character-oriented terminals.