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Note: Many topics at this site are reduced versions of the text in "The Encyclopedia of Networking and Telecommunications." Search results will not be as extensive as a search of the book's CD-ROM.
In any communication session between devices, control codes are used to control another device or provide information about the status of the session. Byte- or character-oriented protocols use full bytes to represent established control codes such as those defined by the ASCII (American Standard Code for Information Interchange) scheme. In contrast, bit-oriented protocols rely on individual bits for control codes.
Byte-oriented protocols transmit data as strings of characters. The transmission method is asynchronous. Each character is separated by a start bit and a stop bit, and no timing mechanism is needed. Asynchronous protocols used with most modems and IBM's BISYNC (Binary Synchronous Communications) Protocol are byte-oriented protocols.
Copyright (c) 2001 Tom Sheldon and Big Sur Multimedia.