Abstract: A method for the compression of a telephone number database in a telecommunications system. The telephone number database contains a plurality of data records each having a specific dialing pattern, and each dialing pattern has a specific local network code number for a corresponding local network. According to the present invention, superfluous dialing patterns are eliminated or, as far as possible, are combined in a more general and shorter dialing pattern, in order in this way to obtain a compressed telephone number database which requires a smaller amount of memory in the telecommunications system and allows the time required to set up a call to be shortened.

Abstract: Information or data, particularly test data, present at a plurality of data interfaces, realized by V.24 interfaces and arranged in an interface equipment, are transferred into intermediate memories. The data interfaces can be assigned to one or more interrupt levels. As a result of the interface-associated monitoring of the data interfaces, the presence of information at the data interfaces is recognized and indicated to an interface testing device by communicating an interrupt request of a processor. As a result, an interface sampling routine assigned to the respective interrupt level is initialized. The data interfaces assigned to an interrupt level are cyclically sampled with the assistance of a respective interface sampling routine until information are no longer present and the information or data are respectively transferred into the assigned intermediate memory.