CIRCUIT SYSTEM FOR A TELECOMMUNICATION SETTING INSTALLATION WITH CENTRAL CONTROL, IN PARTICULAR FOR INSTALLATIONS OF TELEPHONE PCM, WITH A CENTRAL PART AND WITH CONNECTION GROUPS CONNECTED TO THIS CENTRAL PART

摘要

In an exchange consisting of a central part with a central switching network and central coordination processor and of line trunk groups connected to the switching network via seizable junction paths and comprising in each case a group switch and a group processor, exists between coordination processor, on the one hand, and each of the group processors, on the other hand, via which the former in each case has access to each of the latter. When an entire exchange or only individual line trunk groups are taken into operation, the coordination processor loads the group processors with switching program information items and, with the individual group switch connections which can be subscriber lines and junction lines, individually allocated connection position data. When the system is taken into operation, the latter are individually transmitted for each group switch connection in each case only when an incoming or outgoing connection is established via the relevant group switch connection in each case. …IMAGE…