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Verwertbare Ergebnisse
The project develops an optical wavelength division multiplexing (WDM)-based transport layer to support an asynchronous transmission mode/synchronous digital hierarchy (ATM/SDH) network in providing, in a cost-effective manner, a significant number of subscribers with a multi-service network. Network requirements and dimensioning are identified by analysing a future multi-service metropolitan network. A demonstration is being staged in the Stockholm Gigabit Network that will display various services/applications over an ATM switched network. An optical layer will be developed together with a management system to serve as a reconfigurable infrastructure for ATM/SDH networks. Critical optical components for such a WDM network will also be developed.
So far the following results are available:
a strategy in exploiting WDM networking within a metropolitan network;
a demonstration showing interoperation of an optical WDM transport layer, an ATM switched network layer, and a multi-service layer;
a management system that demonstrates operation of a WDM network layer;
guidelines for management system architecture, information models and design strategies;
pushing the technology to enable a cost effective and robust implementation of optical network elements;
contribution to the standardization activity on optical networks;
development of a cost/dimensioning tool, DIAMOND (Dimensioning Application for Multi-wavelength Optical Network Design), for evaluation of different WDM network designs;
operation of the first optical add/drop multiplexer (OADM) node with CORBA management interface within SGN;
generation of a benchmark table that compares characteristics of different component technologies.
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