ATM-based local area networks-a conceptional approach

Asynchronous transfer mode is well defined as the basic transfer technology not only for broadband ISDN in particular but also for high-speed communication systems in general. The most important characteristics of ATM such as scalability, time transparency and semantic transparency allow ATM to be used in wide area networks as well as in local area networks (LANs). We try to clearly define a connectivity strategy, based on ATM, in LANs, especially in customer premises networks (CPN). Different aspects of the network architecture, the related functionalities and the realizing possibilities of implementation are considered. We suggest an concept for implementing a LAN based on ATM which allows a smooth transition from today´s LANs to future modern technologies such as ATM. This concept includes the installation of a hierarchically structured cabling system with a star configuration as well as the implementation of multifunctional network interconnection systems (MNIS) which handle both cell-based and packet-based data traffic and thus allow the access not only to the switched public ATM network but also to traditional shared-medium LANs. All of the discussed aspects are taken into account as a basis for the design and implementation of a new generation of network connectivity systems from CONWARE in Karlsruhe, Germany