The CVT-3112 series media converter allow the user to connect Ethernet twisted-pair network to fiber Ethernet network easily and extend the transmission distance from 10km to 80km maximized. The optical interface of media converter provides a wide range of options to fit the practically need of fiber network deployment for the customer included multi-mode, single-mode and bi-directional transmission over just one single fiber as well as the SFP slot for pluggable fiber transceiver.