EFM (Ethernet in the First Mile) brings the throughout use of the Ethernet protocol from the core network to the subscriber. EFM eliminates the non-Ethernet transport via DSL, which commonly uses the ATM protocol - just like the SDH backbone.
Switching the backbone to IP left the First Mile between central office LT and subscriber NT as the only member in the data transport chain which uses a different data transmission technology. For the network operators the use of Ethernet as standard means saving costs for provisioning, configuration and operation of the network.
MileGate combines carrier-grade broadband access, telephony and data interfaces in one single, compact Next-Generation Access Platform. It provides IP as well as TDM voice and data services. As a result, network operators can carry on supporting legacy telephony and broadband services, at the same time as migrating to the NGN (Next Generation Network) and providing top-quality Triple Play and broadband business services as well. Together with different EFM services MileGate provides another wide range of functions.