Glossary of Terms


  • 10GBASE-CX4: 10 Gigabit over coaxial cable, IEEE Std 802.3ak- 2004
  • 10GBASE-LRM: 10 Gbps over MMF using 1310 nm wavelength optics
  • 10GBASE-R: 64B/66B coding scheme for serial data transmission at 10.3125 Gbps
  • 10GBASE-T: 10 Gbps over 4-pair, twisted-pair balanced copper cabling
  • 10GBASE-W: 10GBASE-R with a SONET/SDH mapper (aka WIS)
  • 10GbE: 10 Gigabit Ethernet
  • 10GEA: 10 Gigabit Ethernet Alliance
  • 10G EPON: 10 Gigabit per second Ethernet Passive Optical Networks
  • 64B/66B: 64 binary symbols (bits) are scrambled and appended with a sync binary symbol and a control binary symbol
  • CWDM: Coarse Wavelength Division Multiplexing
  • DAS: Direct Attach Storage
  • DMD: Differential Mode Delay
  • DSQ128: Double Square constellation, PAM16 constellation with half the code points removed
  • DTE: Data Terminal Equipment
  • DWDM: Dense Wavelength Division Multiplexing
  • EDC: Electronic Dispersion Compensation
  • EFM: Ethernet in the First Mile
  • FCoE: Fibre Channel over Ethernet
  • GMII: Gigabit Media Independent Interface
  • HSSG: Higher Speed Ethernet Study Group
  • IEEE: Institute of Electrical and Electronics Engineers
  • IEEE-SA: IEEE Standards Association
  • IPG: Inter-Packet Gap
  • iSCSI: Internet Small Computer System Interface
  • ISP: Internet Service Provider
  • LAN: Local Area Network
  • LRM: LR Optics for Multi-Mode Fiber
  • LTE: Line Terminating Equipment
  • MAC: Media Access Control
  • MAN: Metropolitan Area Network
  • MDI: Medium Dependent Interface
  • MMF: Multimode Fiber
  • NAS: Network Attached Storage
  • PAR: Project Approval Request
  • PAM: Pulse Amplitude Modulation
  • PCS: Physical Coding Sublayer
  • PHY: Physical Layer Device
  • PMA: Physical Medium Attachment
  • PMD: Physical Medium Dependent
  • PoE: Power over Ethernet
  • PoE+: Power over Ethernet extended to 30W
  • POP: Point of Presence
  • QSFP: Quad small form-factor pluggable
  • RS: Reconciliation Sublayer
  • SAN: Storage Area Network
  • SDH: Synchronous Digital Hierarchy
  • SERDES: Serializer-Deserializer
  • SFP+: Small Form factor Pluggable for 10 Gigabit optics
  • SMF: Single-Mode Fiber
  • SONET: Synchronous Optical NETwork
  • SPE: SONET/SDH Payload Envelope
  • SSP: Storage Service Provider
  • UNH-IOL: University of New Hampshire Interoperability Lab
  • WAN: Wide Area Network
  • WIS: WAN Interface Sublayer
  • WWDM: Wide Wavelength Division Multiplexing
  • XAUI: 10 Gigabit Attachment Unit Interface
  • XENPAK, X2, XPAK, XFP: 10 Gigabit optical module form factors
  • XFI: 10 Gigabit Ethernet Serial Interface
  • XGMII: 10 Gigabit Media Independent Interface