Method for determining connection path for setting-up connection in transparent optical transmission system, e.g. of wavelength division multiplexing technology (WDM), with numerous optical transmission paths via network nodal points

摘要

In transparent optical transmission system (ASTM) with numerous optical transmission paths (OS1-6) with network nodal points (A-E), potential connection path is determined via at least one available optical wavelength channel. Signalling cost along potential connection path for each faulty attempt and connection resource cost value formed from it for each potential path. For connection set-up connection path with minimum cost value is selected.