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10GBASE-LRM
10GBASE-LRM, (Long Reach Multimode), also known as 802.3aq, uses the IEEE 802.3 Clause 49 64B/66B Physical Coding Sublayer (PCS) and 1310 nm lasers. It delivers serialized data over multi-mode fiber at a line rate of 10.3125 Gbit/s.
10GBASE-LRM supports distances up to 220 metres (720 ft) on FDDI-grade 62.5 µm multi-mode fibre originally installed in the early 1990s for FDDI and 100BaseFX networks and 260 metres (850 ft) on OM3. 10GBASE-LRM reach is not quite as far as the older 10GBASE-LX4 standard. However it is hoped that 10GBASE-LRM modules will be lower cost and lower power; and because 10GBASE-LRM uses the same PCS as XFI and SFI no recoding of data is required with the XFP and SFP+ module MSAs.
10GBASE-LRM uses electronic dispersion control (EDC) for receive equalization.
