www.hirschmann.com 1 Patras Deviation Highway Network. Patras Deviation Highway (P .D.H.) Tunnels / Bridges The Patras Deviation Highway is a new part of the country-wide P.A.TH.E main highway in Greece. The P.D.H. is 18km long and connects the Athens – Patra highway with the road that leads to Pyrgos bypassing the city of Patra. It contains several tunnels. This application note describes the computer network designed for this project.Pro

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