Telecommunications system, particularly a telephone exchange system, having overload protected sequential logic systems

摘要

For the purpose of averting overloads in a telephone exchange system which comprises information-processing sequential logic systems and overload averting circuits, seizures are counted by the counter according to their respective significance or weighting. Different weightings are stored in memory elements to indicate different types of seizures for a subscriber call such as, for example, a call set up over an incoming trunk line, a call completion from a pulse code modulation switching matrix network over a line trunk group to the selected subscriber and the like which produce different degrees of traffic load for a central control unit or a group control unit. The overall traffic load measurement takes the traffic load to be anticipated with each individual seizure into consideration. Particular application as the group control unit is provided because the balancing effect of statistical averaging is substantially eliminated.