Optical distribution network (ODN) is a part of the fibre-optic access network, constructed entirely from fibre-optic strands or cables, connecting a private network (a building, apartment, or business premises) to a distribution node (DN). 9807 (XGS-PON), and IEC 60794 cable standards, the ODN forms the physical optical path responsible. In modern FTTH architectures, the ODN is the physical fiber layer that distributes optical signals from the central office to end users. Operators consider ODN design as one of the most important factors affecting: Network coverage Optical loss performance Deployment cost (CAPEX) Long-term. ODN usually consists of fiber optic cables, optical connectors, optical splitters, and supporting equipment for installing and connecting these devices. Actually, ONT is the same as ONU in essence. But in. ODN is an optical distribution network.
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