GPON is a fiber optic system that the ITU standardized in 2003 with the designation "G.984 Gigabit capable passive optical networks". A variant of this is GEPON. Also standardized by the IEEE and mainly used in Asia. GPON is the successor to ATM-PON and BPON (G.983). The standards also originate from the ITU. GPON is a passive fiber optic network that does not require expensive active components. GPON relies on a point-to-multipoint topology for the fiber optic infrastructure. From a central switch "OLT-Optical Line Terminal", the subscribers are supplied. The individual subscribers are served by passive optical splitters that function like prisms. The light signal is scattered to several outputs. Through the splitter, multiple users 4/8/16/32/64 or 128 users can share a bandwidth of 2.48 Gbps (about 2.5 Gbps) downstream and 1.24 Gbps (about 1.25 Gbps) upstream. The advantage of passive fiber networks is the lower cost compared to fiber networks with active components.   Technical Details:   Element Spezification GPON Standard IEEE802.3-2005 compliant GPON ONU - GEPON Port embedded Ethernet-Ports: 4x RJ45 10/100/1000BaseTX LED-Anzeigen: PON LOS RUN POWER LAN Ports Power supply: 12V DC, external Power supply Power consumption:: 8 Watt maximal Product Features: IEEE802.3ah Standard Support Frame Filtering and suppression Support 802.1q VLAN function & VLAN conversation Support 4094 VLANs (802.1q) Support Dynamic Bandwidth Allocation (DBA) function Suuport QOS "Traffic flow classification, priority marking, queue anddispatch, traffic shaping and traffic control Single ONU supports up to 1 LLID Support IGMP Snooping Support Ethernet Port ratelimit loop detection Support power failure alarm Gehäuse: PVC Maße: 105 x 85 x 27 mm Temperature:: Working temperatureMode: 0 ~ 55 °C Relative humidity: 10% ~ 90% (non-condensed) Storage temperature: -30 ~ 60 °C Marks: CE