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SDLC (Synchronous Data Link Control)
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.
SDLC is an IBM-defined Data Link Control protocol developed in the 1970s for communication over wide area links to IBM host systems in SNA (Systems Network Architecture) environments. SDLC is based on synchronous, bit-oriented operations as compared to byte-oriented protocols such as BISYNC (Binary Synchronous Communications).
Copyright (c) 2001 Tom Sheldon and Big Sur Multimedia.