The Metrobility® T3 interface by Telco Systems provides cost effective high-speed integration and conversion of T3 (44.736Mbps) serial copper telco communication lines to fiber optic links. The T3 interface line card can connect to PBX's, multiplexers, ATM/Frame Relay devices, routers, network servers and video CODECS achieving extended distances, high density, high quality of transmission, and improved security.