User's Manual

A PPENDIX C | Cables and Pinouts
Twisted-Pair Cable Assignments
– 96 –
STRAIGHT-THROUGH
WIRING
If the twisted-pair cable is to join two ports and only one of the ports has
an internal crossover (MDI-X), the two pairs of wires must be straight-
through.
Figure 63: Straight Through Wiring
Table 7: 10/100BASE-TX MDI and MDI-X Port Pinouts
PIN
MDI Signal Name
a
a. The “+” and “-” signs represent the polarity of the wires that make up each wire pair.
MDI-X Signal Name
1 Transmit Data plus (TD+) Receive Data plus (RD+)
2 Transmit Data minus (TD-) Receive Data minus (RD-)
3 Receive Data plus (RD+) Transmit Data plus (TD+)
6 Receive Data minus (RD-) Transmit Data minus (TD-)
4, 5, 7, 8 Not used Not used
White/Orange Stripe
Orange
White/Green Stripe
Green
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
EIA/TIA 568B RJ-45 Wiring Standard
10/100BASE-TX Straight-through Cable
End A
End B
Blue
White/Blue Stripe
Brown
White/Brown Stripe