The OLT equipment consists of a rack, a control and switching module (CSM), an EPON link module (ELM), a PON card, a power module, and a fan. In a PON network, an OLT is deployed at the service provider's central office, and many ONU devices or optical ONT devices and optical splitters (SPLs) are near the end users. In addition, ODNs are used for data transmission between OLTs and ONUs/ONTs. In contrast to AON, multiple customers are connected to a single transceiver by means of. Optical modules (also known as fiber optic transceivers) are essential components in modern communication networks, enabling high-speed data transmission by converting electrical signals into optical signals and vice versa. These compact, hot-swappable devices convert electrical signals into optical signals (and vice. GAO's OLT (Optical Line Terminal) / ONT (Optical Network Terminal) units are networking devices used in the deployment of fiber optic networks, specifically in the context of Passive Optical Networks (PON).
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