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, as a bridge-type home side equipment, through EPON technology 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: ?? conform IEEE802.3-2005 standards. ??? Support Ethernet layer switching and wire-speed forwarding business down the line. ??? Support frame filtering and suppression. ??? Supports standard 802.1Q Vlan, support VLAN translation. ??? Supports 4094 VLAN (802.1Q). ??? Supports dynamic bandwidth allocation (DBA). ??? Support QoS, including traffic classification, priority marking, queuing and scheduling, traffic shaping and traffic control and so on. ??? Support I高标准 Snooping. ??? Ethernet port speed, loop detection, two-story isolation. ??? Support power failure alarm. ? Support for remote reset and restart function? Support function to restore the factory parameters? Support data encryption? Support state detection and fault reporting functions? Support Power lightning and lightning protection service ports. Port characteristics: the interface in order from left to right are:? PON port: connect via fiber optic cable source OLT equipment RJ45 port:? User side device connected via twisted pair, four 10 / 100M adaptive interface Reset button:? Restore factory By default, hold down the hole with a needle more than three seconds, the system will restore the factory default power interface:? connect external power optical properties: ????????????????????? ?????????????????????????????????????????????????? ????? ???????> Support Bidirectional WDM technology (Triplexer) transmission ???????> interface type: SC / PC ??????? > Maximum split ratio: 1:32 ???????> Rate:? vertically symmetrical 1.25Gbps ???????> transmission wavelength: 1310 nm ???????> receiving wavelength: 1490 nm? ??????> output power: -1 ~ + 4dBm ???????> Receiver sensitivity: maximum distance between the OLT and ONU supports 20 km Other features: Certification: Complies with CE, FCC, ROHS, etc. ? Standard EMC / EMI: meet the VCCI Class B, FCC Part 15 B Standard Safety: UL 60950 safety norms in line with lightning surge voltage protection: meet ITU-T K.21 standard physical characteristics:? Power: 12V / 1A power Consumption: 8W Temperature:? Working temperature: 0 ~ 55 ℃ Storage temperature: -30 ~ 60 ℃ Relative Humidity: 10 to 90% (non-condensing)