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Chapter 5: Technical Glossary
RJ-45 — The Registered Jack (RJ) physical interface is what connects the network
cabling (CAT5) to the local extender and remote extender. You may use either the
T568A scheme (Table 5-1) or the T568B scheme (Table 5-2) for cable termination
because the extender uses all four pairs of the cable. RJ-45 connectors are
sometimes also referred to as 8P8C connectors.
RJ-45 Pin Positioning —
Table 5-1. T568A wiring.
Pin Pair Wire Cable Color
1 3 1 White/Green
2 3 2 Green
3 2 1 White/Orange
4 1 2 Blue
5 1 1 White/Blue
6 2 2 Orange
7 4 1 White/Brown
8 4 2 Brown
Table 5-2. T568B wiring.
Pin Pair Wire Cable Color
1 2 1 White/Orange
2 2 2 Orange
3 3 1 White/Green
4 1 2 Blue
5 1 1 White/Blue
6 3 2 Green
7 4 1 White/Brown
8 4 2 Brown
Figure 5-2. T568A connector pinout.
Figure 5-3. T568B connector pinout.
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