The Optical Line Terminal (OLT) is the backbone of every PON-based broadband network — managing, scheduling, and securing optical data transmission across thousands of connections. An optical line termination (OLT), also called an optical line terminal, is a device which serves as the service provider endpoint of a passive optical network. The OLT is responsible not only for transmitting data from the core network to user terminals but also for managing bandwidth. In short: The OLT (Optical Line Terminal) is the central control unit of a Passive Optical Network (PON). This article explores the definition, features, functions, and applications of OLT in PON networks.
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