OPTICAL NETWORK UNIT

OPTICAL NETWORK UNIT

FTTH/GPON ONU
(OPTICAL NETWORK UNIT)

A GPON network consists of OLT (Optical Line Terminals), ONU (Optical Network Unit), and a splitter. The splitter will
divide the signal when needed.

In a fiber-optic network, there are devices that are necessary to complete the fiber to the home (FTTH) link. One
of which is the ONT/ONU.

ONT stands for Optical Network Terminal. ONU stands for Optical Network Unit.

An ONT and an ONU are the same things. ONT and ONU both refer to the consumer end equipment in an optical
fiber to the home (FTTH) communication link. But if you want to get technical, there is one difference and that is
that ONT is an ITU-T term, whereas ONU is an IEEE term. ITU-T and IEEE are two different telecommunication
standards. But you can think of an ONT and ONU as the same thing.