foc r1000 series of fiber transceivers perform conversion from 1000base-t, ethernet utp port to 1000base-lx or 100base-sx fiber optic interface, hence extending the range of ethernet over fiber optic links up to 80km. foc r1000 series of fiber optic transceivers is fully compliant with all relevant ieee802.3x standards. all can operate in 3 modes: full duplex, half duplex and auto-negotiating. the transceivers have found wide applications in the construction of ip man and intelligent communities. features  copper to fiber conversion for 1000mbps ethernet traffic, extending the range of ethernet over fiber optic links up to 80km, 550m for multi-mode  complete integration of electrical and fiber optic circuits in one chipset ensures reliable operations  downward compatible with 10m, 100m, 10/100m devices  full compliance with relevant ieee 802.3x ethernet standards  1000base-t port supports half duplex, full duplex and auto-negotiation operation mode  1000base-t port supports port straight and cross cable (crruns) auto-adapting  status leds  carrier class quality: mtbf = 60,000 hours  compact in size, modular in design.  standalone and card versions available  built-in 220vac or -48vdc power supply