The Accton HGG4004 is a GPON Optical Network Terminal (ONT) compliant with ITU-T G.984 standard. It is designed based on GPON technology, supporting upstream 1.244Gbps and downstream 2.488Gbps PON transmission rate. The highly efficient bandwidth usage for Ethernet multi-services ensures a reliable quality of service to meet the requirements of carrier service providers. The HGG4004 provides 1 GPON uplink port and 4 10/100/1000Base-T (RJ-45) Gigabit Ethernet downlink port. The HGG4004 enables service providers to extend their core optical network all the way to the subscriber, eliminating the bandwidth bottleneck in the last mile. With 4 Gigabit Ethernet service interfaces, they deliver data at the speed of 1000Mbps to connected subscriber equipment.