http://www.ifsec.co.uk/page.cfm/Link=128/t=m/goSection=9

This product based on breakthrough RF technology is able to provide “Ethernet over Coax” function. 100Mpbs and full duplexer Ethernet signal can be transmitted over 200-300m coax cable by an elegant active / passive pair.

The active device (EOC-AN) with RJ-45 connector and F-connector is to connect Ethernet twist pair and coax cable, and is powered by very small watt (<=0.5W). The remote device (EOC-IN) with passive feature and compact size can convert Ethernet signal back to twist pair cable. This EOC-AN/-IN connection has the advantage of simple installation, cost effective, compact size, power saving and excellent performance.

By using breakthrough RF technology, our product can transmit IP signal with 100Mpbs and full duplexer over 200-300 m coax cable. The unique active/passive pair makes low cost , high performance, compact size and green (power-saving and coax cable re-use) becoming possible on IP camera deployment.