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Communications of the ACM

Communications of the ACM

On the interface between computers and data communications systems

Future systems that combine computers, digital terminals, and communications equipment present design optimization problems that require reconsideration of the traditional functional responsibilities of the respective subsystems. Several “standard” interfaces, by means of which computers and digital terminals connect to the communications systems will be required. When specifying these interfaces, consideration must be given to problems of coordination, synchronization, error control, signaling, stream multiplexing, and switch control, in addition to minimizing the technological interdependence of specific subsystem designs. A focus on some of the problems is obtained in a discussion of a detailed specification for a paticular computer-communications system interface.

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