The Ethernet in the First Mile Standard (EFM) was established in 2004. EFM addressed the gaps that existed in the Ethernet family when applied to broadband access applications. The standard support five new interfaces: multi-pair copper access to enterprises (2-BASE-TL), High-Speed Symmetrical Copper Access over short loops (10BASE-TS), Point-to-Point Fiber access with 10km reach (100BASE-LX10, 1000BASELX-10) and Passive Optical Network (1000BASE-PX).
