Circuit configuration for telecommunication switching systems, in particular PCM time division multiplex telephone switching systems with a central switching network and peripheral sub-switching networks connected to it

摘要: Line groups with doubled central switching network and connected via correspondingly two time division multiplex lines having inter alia one sub-switching group control system each are assigned to other in pairs. The connection devices, which individually the of line groups, internal normal operation instance their own group, can be changed over particular group. So that no connections up change-over already through-connected or process being set interrupted, form only connection-individual message paths for voice, data, like, all immediately switchable; however, individual associated signaling channels those belong unoccupied as well stable run.