Circuit arrangement for the transmission of time division multiplexing - signals by means of a space multiplex - after straightening switching system

摘要

The communications channels or time slots of time division multiplex lines are enabled to be switched through a conventional common control telephone switching office by providing each line with a plurality of digital trunks, one for each time slot in a frame, extracting call signaling information from the time slots and establishing cross-office connections for each digital trunk. To avoid excessive crosstalk, the contents of each time slot, registered in its respective digital trunk, is outpulsed cross-office at a pulse repetition rate less than the characteristic rate of the time division multiplex line but in a time interval substantially less than the interval occupied by a complete frame of time slots.