Onu onu421 4 rj45 ports, 2 voip ports, 1 rf port (75ohm, f type connector for catv), 1 optical port for gepon, sm, single fiber, 20km, 10/100base-t, max split: 32, wavelength, 1490r/1310t, cli management, rs232 console for debug and cli/telnet, external power, ac220v/dc-12v, 220(w)*136(d)*32(h)mm. Features: 1.Full ieee 802.3/802.3ah compliance 2.Highest speed pon: 1 gbit/s symmetrical for data, voip or ip video services 3.Plug-and-play+/- via auto-discovery and configuration 4. Advanced qos functions enable billing by service level agreement 5.Remote management with advanced oam functions 6.Igmp snooping 7.Reduction of video pon onu cost with combination an onu transceiver 8.Low input optical power Application: 9.Lan 10.Fttx 11.Catv Optional