Method for monitoring the occupancy of devices involved in path connections (release on incorrect occupancy)

摘要

The invention relates to a method for monitoring occupancy of devices involved in path connections for the purpose of releasing devices in telecommunications systems, in particular in PCM telephone PBX systems, which are incorrectly marked as occupied, with functional units which exchange switching information via switching paths in order to set up the connections and thereby act on the device (peripheral units and paths, as well as a central control device), separate data memories being assigned to all devices into which occupancy data determining the respective path connections can be recorded. Each data memory (GDS, WDS, VDS) in each case has a status bit marking occupied and free status as well as a first and second monitoring bit which can be controlled by a check routine, the status bit and the two monitoring bits being controlled by the check routine in such a way that the correct occupancy status of the devices can be checked according to their value in conjunction with the consistency check stage (KPS). Methods of this type for monitoring the correct occupancy of devices are used in PCM telephone PBX systems. <IMAGE>