Abstract: Call-associated series of information-processing requests, accepted in decentralized switching facilities, are composed of initial switch identifiers which arrive first and of successor switch identifiers arrive following thereupon and are transmitted to a central switch mechanism from the switching facilities which are present in a greater plurality. A measuring device which continuously determines the loadability of a switching circuit periodically and continuously adjust the comparison standard of a counter, which only counts the initial switch identifiers in successfully following time intervals, perceives a pending overload situation for the switching circuit on the basis thereof and, in order to avoid the same, transmits non-acceptance data to the switching facilities in which, a portion of the received occupations are subjected to non-acceptance in accordance with accordingly stored non-acceptance rates.