Siemens Aktiengesellschaft

Harold Linke

Klaus Wille

Rainer Windecker

Steffi Winkler

Antonius Emmerink

Egon Klein

Andreas Steffan

Josef Wahler

Karl-Heinz Hass

Axel Buerck

Helmut Rackl

Johann-Heinrich Schinke

A method and an arrangement are specified for setting up and clearing communications links via a private branch exchange. The transport network for transporting the communication data is preferably in the form of an ATM network or IP network, and is controlled by a separate control network, separated from it. The advantage is that the two networks are independent of one another, and that broadband communications requirements can be satisfied easily by a modular expansion capability. The central control configuration allows already existing central databases relating to subscribers to be used, and likewise allows connection-related service feature control systems still to be used.

Communications system and method

The controller of the switching system has a switching-oriented program that has two program parts allocated to it. A first program part is designed for processing call number information that has a first plurality of call number digit information. The second program part is designed for processing call number information that has a second, greater plurality of call number digit information. In the method of the invention, the call number plan of a private branch exchange is designed for a public switching system.

Method and apparatus for processing call number information for a

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Olching, Germany

Harold Linke