Ethernet First Mile (EFM)
Ethernet First Mile (EFM) is a cheap leased line technology with huge cost savings over traditional leased lines. EFM provides symmetrical upstream and downstream bandwidth upto 20 Mbps with no contention. EFM is suitable for providing reliable VPN and VoIP services, replacing traditional leased lines or SDSL technology.
Ethernet First Mile (EFM) is also highly resilient and covered by a fault fix SLA, making it suitable for business critical applications.
EFM is available to more than 80% of business premises in the UK.
EFM achieves reliability by bundling a number of copper pairs together into a single connection. If a single pair fails, the connection keeps running albeit at a lower speed, making it fault tolerant.