GPON Reverse PoE(PD) ONU with reverse PoE designed for fulfilling FTTH request of telecom operators, internet access of SOHO. This product is support EPON model or GPON model, which has high performance/price ratio, and the technology of layer 2 Ethernet switch as well. It is highly reliable and easy to maintain, with guaranteed QoS. Its EPON model is fully compliant to technical regulations such as IEEE802.3ah and technical requirement of EPON Equipment (V2.1) from China Telecom, Its GPON model is fully compliant to ITU-TG.984.x. ONU is powered by the power sourcing equipment (PSE) deployed in users' residences, applied in scenarios where there is no alternating current (AC) power supply in corridors.