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200 10$a802.3cn-2019 - IEEE Standard for Ethernet$hAmendment 4, $iPhysical Layers and Management Parameters for 50Gb/s, 200Gb/s, and 400Gb/s Operation over Single-Mode Fiber /$fIEEE
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215   $a1 online resource (87 pages)
330   $aThis amendment to IEEE Std 802.3-2018 adds Physical Layer (PHY) specifications and management parameters for 50 Gb/s, 200 Gb/s, and 400 Gb/s operation over single-mode fiber with reaches of at least 40 km.
517   $a802.3cn-2019 - IEEE Standard for Ethernet - Amendment 4
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