Automatic Intercept System: Peripheral Circuits

Abstract

The Automatic Intercept System forms intercept announcements from phrases recorded on a magnetic drum by means of a sequence of connections through a time division switching network. Automatic fault recovery and diagnostic maintenance features include a trunk test circuit that enables maintenance programs to look in at the system on trunk pairs and test the autonomous scanner and time division network as well as the trunk and service circuits. The Automatic Intercept System time division switching network, announcement machines, operator positions, trunk and service circuits, and the maintenance strategy for these units are described in this paper.