Method for compression of a call-number data-record of a switching system and a switching system provided therewith

摘要

The method involves inspecting if the dial pattern of a first data set is covered by a more general dial pattern of a second data set with identical attributes. Several data sets with individual dial pattern are provided in a call number data stock (A). Each dial pattern comprises a predetermined destination identification number of a telecommunication network. Each dial pattern has at least a predetermined attribute for the administration of the dial pattern in the telecommunication system. The first data set is erased if the result of the inspection is positive.