 Virtual bidirectional point-to-point or point-to-multipoint connections (services) between identical interfaces in different nodes are programmed via a configuration software called OMS (OTN management system).By doing this, OTN mimics a physical wire harness interconnecting electronic data equipment but with the added advantages typical for fiber transmission and with high reliability due to the intrinsic redundant concept.This concept makes the Open Transport Network the de facto transmission backbone standard for industrial high reliability communication sites that require errorfree communication for a large spectrum of protocols over long distances like pipelines, metros, rail, motorways and industrial sites.