Circuit arrangement for centrally controlled telecommunications systems, in particular telephone PBX systems, with central and local devices controllable via data transmission trunk groups (local reset units)

摘要

Within telecommunications systems of this type, dedicated reset units (R) are allocated to input/output devices (IOP1, m) and/or to all devices for activating switching points for through-connection of the speech path switching network (CNS), so that the central control device (CP) can control the error condition of the input/output devices (IOP1, m) and/or the devices (LTU1, n) for activating switching points for through-connection of the speech path switching network (CNS) for disconnection purposes. Circuit arrangements of this type are used for centrally controlled telecommunications systems, in particular for telephone PBX systems. <IMAGE>