The SNR-ONT-1G is comprised of one GPON uplink and Gigabit Ethernet downlink supporting 10/100/1000Base-T (RJ45). It helps service providers to extend their core optical network all the way to their subscribers, eliminating bandwidth bottlenecks in the last mile. GPON technology supports upstream 1. Choose from reliable Optical Network Terminals for seamless connectivity and efficient network solutions. An optical network terminal (ONT) unit is a device that connects fiber optics cables to other wiring such as Ethernet and phone lines by converting the signal from optical to electrical and vice versa.