NBASE-T Alliance White Papers -

NBASE-T Downshift: Optimization of 2.5Gb/s and 5Gb/s Ethernet Data Rates Over Cat5e/Cat6 Cabling

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This white paper describes NBASE-T Downshift and how it optimizes transmission rates to get the highest achievable data rate out of installed Category 5e and Category 6 structured cabling. NBASE-T Downshift augments the IEEE 802.3Bz™ standard by providing a mechanism to select the best speed available within the constraints of the cabling.