IEEE Std 802.3cn-2019 pdf download - lEEE Standard for Ethernet Amendment 4: Physical Layers and Management Parameters for 50 Gb/s, 200 Gb/s, and 400 Gb/s Operation over Single-Mode Fiber. 45.2.1.20.1a 200GBASE-ER4 ability (1.23.6) When read as a...
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