OTN (Open Transport Network) is a state-of-the-art communication network for mission critical applications using fiber optic technology. It is designed for companies with mixed applications in industrial environments that require their own network infrastructure to run their operations 24 by 7. OTN applies the latest technological advances to meet the data, voice and video telecommunication needs of specific industries and transportation sectors, such as metros, light rails, railways, mines, airports, pipelines, utility/power companies, campus networks and so on.