The Optical Network Unit (ONU) and the Optical Network Terminal (ONT) GEEPONs can both connect with an Optical Network Terminal (OLT) via fiber cables in order to achieve an Optical Distributed Network. I've read on different forums that both the ONU and ONT are able to achieve this requirement equally, but since they are both manufactured by the same provider, what really differentiates them?

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ONU is the IEEE term while ONT is the ITU-T term. Both mean the same thing.

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