Telephone monitoring and controlling equipment - has central microprocessor unit with memory controlling crossbar selectors

摘要

An electronic equipment is used to monitor and control telephone devices. The devices may be electronic or electromechanical, particularly crossbar selectors. The equipment has a main unit comprising a microprocessor and auxiliaries. This main unit executes programs for controlling. There are also a memory unit, a management unit and an interface unit for slow output signals. A matrix and another management unit is used for slow input signals. Fast input and output signals are converted by other units, and an output unit supplies signals to a teleprinter.