Sub-station

ONU (optical network unit) optical network unit, ONU is divided into active optical network unit and passive optical network unit. Generally speaking, the equipment equipped with network monitoring including optical receiver, uplink optical transmitter and multiple bridge amplifiers is called optical node. The PON is connected to the OLT using a single fiber, and then the OLT is connected to the ONU. ONU provides services such as data, IPTV (interactive network TV), voice (using IAD, integrated access device integrated access device) to truly realize the "triple play" application.

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