In short, OTNs will apply the operations, administration, maintenance, and provisioning (OAM&P) functionality of SONET/SDH to DWDM optical networks. The OTN is specified in the International Telecommunications Union (ITU-T) G. 709 Network Node Interface for the OTN. An optical transport network (OTN) is a digital wrapper that encapsulates frames of data, to allow multiple data sources to be sent on the same channel. ITU-T defines an optical transport network as a set of optical network. High-performance 100G - 800G, single fiber capacity 96T, optical and electrical in one platform, flexible in board dimensions, and smooth evolution to 1T/2T. The Optical Transport Hierarchy (OTH) is a new transport technology for the OTN developed by the ITU.
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