OLT – Optical Line Termination
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OLT – Optical Line Termination

OLT is the name given to the optical device that sits at the head end of a PON or FTTx system. As such, the OLT is responsible for coordination of a number of ONU , particularly with respect to the allocation of upstream bandwidth to these devices. In addition, the OLT is the point at which downstream traffic is broadcast to the ONU via the optical distribution system.

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