EFM (Ethernet in the First Mile) works over standard copper wires (telephone lines!) to provide a robust, high-speed internet connection to your business.
Cheaper than traditional “lease-lines” which require installation of new lines, EFM works over “bonded pairs” of existing copper wires. By spreading and combining the bandwidth over multiple lines, overall speed is increased and if there is a failure in one line the system will continue to work on the remaining lines.