A passive optical network (PON) is a telecommunications network that uses only unpowered devices to carry signals, as opposed to electronic equipment. An Optical Distribution Network is a passive optical transmission system composed of optical fibers, splitters, distribution frames, and connectors. The ODN connects the Optical Line Terminal (OLT) located in the central office to the Optical Network Terminal (ONT) or Optical Network Unit (ONU) at customer premises. In practice, PONs are typically used for the last mile between Internet service providers (ISP) and their customers. 9807 (XGS-PON), and IEC 60794 cable standards, the ODN forms the physical optical path responsible. While most people credit their router, the true hero is a vast, passive system known as the Optical Distribution Network (ODN). It's the silent, robust highway that delivers blazing-fast Fiber-to-the-Home (FTTH) and 5G services.
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