4FE ONU GL-E8021U-B-type ONU products fully comply IEEE 802.3-2005 and China Telecom EPON equipment technical requirements V2.1, with carrier-class operational, management, and easy to maintain, for the family side of the bridge-type device, through EPON technology for home / SOHO users over broadband access. Its interface has linked via fiber and central office equipment on a PON. Compact, desktop support placement, wall or placed in the corridor message box. Product Features: l comply IEEE802.3-2005 standards. l Support Ethernet service layer switching and wire-speed forwarding business down the line. l support frame filtering and suppression. l supports standard 802.1Q Vlan, support VLAN translation. l supports 4094 VLAN (802.1Q). l supports dynamic bandwidth allocation (DBA). l support QoS, including traffic classification, priority marking, queuing and scheduling, traffic shaping and traffic control and so on. l Support I高标准 Snooping. l Ethernet port speed, loop detection, two-story isolation. l Support power failure alarm. l Support for remote reset and restart function. l support function to restore the factory settings. l support data encryption. l support state detection and fault reporting capabilities. l Support power mine and mine service ports. Port characteristics: the interface in order from left to right are: l PON port: fiber optic cable connected to the source through the OLT l RJ45 port: connect the user side device via twisted pair, four 10 / 100M adaptive interface l Reset button: restore factory By default, hold down the hole with a needle more than three seconds, the system will restore the factory default l Power connector: connect an external power supply optical properties:> Support Bidirectional WDM technology (Triplexer) Transmission> Interface Type: SC / PC> maximum splitting ratio: 1:32> rate: up and down symmetric 1.25Gbps> Send Wavelength: 1310nm> receive Wavelength: 1490nm> output optical power: -1 ~ + 4dBm> Receiver sensitivity: the maximum distance between the OLT and ONU Support 20 km Other features: Certification: Complies with CE, FCC, ROHS and other standards EMC / EMI: meet the VCCI Class B, FCC Part 15 B standard safety: compliance with UL 60950 safety norms lightning surge voltage protection: meet ITU-T K.21 standard physical characteristics: l Power: 12V / 1A power: 8W l Temperature: Operating Temperature: 0 ~ 55 ℃ Storage temperature: -30 ~ 60 ℃ Relative Humidity: 10 to 90% (non-condensing)