The modular FCX4G is a flexible fiber optic converter and repeater with integrated management for broad-band data-transport. FCX4G has one or two independent channels, each supporting data rates for lots of applications including Ethernet, SDH and Fiber-Channel from 10 Mbps up to 4.25 Gbps. Full 3R-Regeneration (re-amplification, re-shaping, re-timing) for each channel in both directions making the FCX4G to an unique member of arcutronix Transmission family.