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The last issue of the IBM Systems Journal emphasize areas of current interest in the related fields of communications and computers. The first paper in this issue continues to look at this topical area, its subject being a design tool used to help determine performance characteristics of complex communications systems. This paper, by Stewart, describes a discrete simulation modeling tool used by IBM systems engineers n analyzing the design and performance of telecommunications systems. The tool can predict response times and component loads for elements of a network such as terminals and clustr controllers, as well as for host processors. The paper presents an overview of the model and illustrates its use with a typical example.
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