Circuit arrangement for telecommunications switching systems, particularly telephone switching systems, etc.

Claim 1

In a circuit arrangement for causing acceptance or rejection of processing requests for an information-processing sequential logic system of a telecommunications switching system, which logic system has a limited call-handling capability with respect to its information-processing capacity, in which a traffic measuring device identifies the information-processing traffic load of the information-processing sequential logic system caused by processing requests, in which a rejection device serves for defense against such overloads is provided in which a critical limit value can be set based on the measuring of the identified information-processing traffic load, and in which different urgency degrees of different types of processing requests have different urgency values individually assigned thereto, the improvement comprising: means for comparing the individual urgency values to the critical limit value and producing an acceptance character when the urgency value is greater than the critical limit value, or for producing a rejection character if the urgency value is less than the critical limit and if addition of a residual acceptance value in a type associated residual acceptance value storage means produces an overflow; and means for accepting or rejecting the processing requests in response to the acceptance and rejection characters for processing by the sequential logic system so that processing requests having above-average urgency are taken into consideration with a certain priority over processing requests having below-average urgency with respect to their processing in the sequential logic system, said type associated residual acceptance value storage means storing said residual values representing a percentage of each type of each request to be rejected, and accumulating said residual values for each type of request in respective counter storage areas to reject the request when the counter storage area overflows and accept the request when there is no overflow.