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8
Cables and Connectors
Cable characteristics: Category 3 or better
unshielded twisted-pair or EIA/TIA-568 compliant,
100-ohm shielded twisted-pair data cable with 0.4 to
0.6 mm (22 to 26 AWG) wires in two or four twisted
pairs (only two pairs--that is, four wires--are used
for 10BASE-T ).
Maximum segment length: 100 meters
Connectors: RJ-45
Straight Twisted-Pair Cable Pinouts
Contact MDI-X Signal MDI-II Signal
1 RD+ (receive) TD+ (transmit)
2 RD- (receive) TD- (transmit)
3 TD+ (transmit) RD+ (receive)
4 Not used Not used
5 Not used Not used
6 TD- (transmit) RD- (receive)
7 Not used Not used
8 Not used Not used