Ethernet Physical Layer Standards
UTP Physical
Layer
Standards
Medium
Required
Maximum
Run
Length
Speed
100BASE-TX
4-pair Category 5 or higher
100 meters
100 Mbps
1000BASE-T
(Gigabit
Ethernet)
4-pair Category 5 or higher
100 meters
1,000 Mbps
10BASE-T
4-pair Category 3 or higher
100 meters
10 Mbps
100BASE-TX dominates access links today,
Although 1000BASE-T is growing in access links today
*
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