Circuit arrangement for controlling call diversions between subscriber devices of different centrally controlled telecommunications systems with a common central signalling channel

摘要

The invention relates to a circuit arrangement for controlling call diversions between subscriber devices of different centrally controlled telecommunications systems, in particular telephone switching systems, which are connected to a central signalling channel. The central control devices (CC) of a respective originating telephone switching system (FVAU) and a destination telephone switching system (FVAZ) are in each case provided with a parameter memory (KDS) containing authorisations of its own subscriber devices (TLR or TLG) and a subscriber memory (TSP) storing origin addresses and call diversion addresses of subscriber devices (TLR, TLG) of any telephone switching systems (FVA...) activating call diversions within one or more communication networks. The origin address and call diversion address are in each case exchanged via the central signalling channel (ZZK) between the originating telephone switching system (FVAU) and the destination telephone switching system (FVAZ) and are acknowledged according to the barring check. Call diversions of this type between subscriber devices of different centrally controlled telephone switching systems within one or more communication networks are used within special-purpose networks - in particular for electricity supply companies. <IMAGE>