COMMON CONTROL TELEPHONE SWITCHING SYSTEM EMPLOYING ADDED DATA WIRE

摘要

Subscriber circuits and junctors are interconnected through data wires via a switching network. In addition to the normal speech wires from the subscriber lines, a separate data wire is provided. This added data transmission wire is used to transmit information through a data wire connection within the network. The data wires receive identifying pulses from a central control through connecting facilities. The data wires are connected to a common information channel via translators. All data concerning an identified connection, as e.g. subscriber number, class-of-service, position number or addresses of the participating switching multiples and the type and number of the junctor are made available over the common information channel to the central control facilities for evaluation.