Circuit arrangement for a telephone system, in particular a telephone PABX system, for measuring occupancy frequency and occupancy time values

摘要

A main memory which is assigned to a central/local control device has a device allocated to it which returns timers of this control device to an initial condition at regular time intervals and to which memory means are also assigned which record occupancy frequency and occupancy time values and which are to be returned to the initial condition only through special reset procedures. <IMAGE>