Concentrating and Switchng Equipment for a Real-Time Multiple-Access Communication System

A private line communications system designed to provide the necessary switching, concentrating, and human factor features for time-shared real-time operation is described. This system required the development of a special concentrator switcher module that combines the on-line capability of a private line with the economy that can be realized from a switched network. The design and operation of the concentrator showing its application in the system is followed by an evaluation of the operating results.