ODN, an integral part of the PON system, provides the optical transmission medium for the physical connection of the ONUs to the OLTs with 20 km or farther reach. Think of the OLT as the brain of the network; it is the concentration point for upstream. orchestration of OLT (Optical Line Terminal) and ONU (Optical Network Unit) optical modules in networking is fundamental to the efficient and reliable operation of fiber-optic communication systems. In contrast to an active optical network. A PON (passive optical network) refers to a fiber-optic network utilizing a point-to-multipoint topology and fiber optical splitters to deliver data from a single transmission point to multiple user endpoints. In contrast to AON, multiple customers are connected to a single transceiver by means of. Key components of an OLT include a rack, a Control and Switch Module (CSM), an EPON Link Module (ELM or PON Card), and power modules. The ONU also sends, aggregates.
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