Allied Telesis AT-8800 Hardware Reference Manual page 21

Hardware Reference
C613-03066-00 REV F
1000BASE straight through cable
For 1000BASE network connections, all four pairs are used and the cable is
wired in a straight-through configuration. This cable can also be used, in
conjunction with the software test facility, to test 1000BASE network ports.
Table 7 on page 21 lists the pin assignments.
Table 7: Pin assignments, 10/100/1000BASE-T RJ-45 four pair straight-through
cable.
End 1
Pin Pair
1 Pair 1+
2 Pair 1-
3 Pair 2+
6 Pair 2-
4 Pair 3+
5 Pair 3-
7 Pair 4+
8 Pair 4-
1000BASE crossover cable
For 1000BASE test cables, all four pairs are used and the cable is wired in either
a crossover or straight-through configuration. Table 8 on page 21 lists the pin
assignments for a crossover cable.
Table 8: Pin assignments, 10/100/1000BASE-T RJ-45 four pair crossover
cable .
End 1
Pin Pair
1 Pair 1+
2 Pair 1-
3 Pair 2+
6 Pair 2-
4 Pair 3+
5 Pair 3-
7 Pair 4+
8 Pair 4-
End 2
Pin Pair
1 Pair 1+
2 Pair 1-
3 Pair 2+
6 Pair 2-
4 Pair 3+
5 Pair 3-
7 Pair 4+
8 Pair 4-
End 2
Pin Pair
3 Pair 2+
6 Pair 2-
1 Pair 1+
2 Pair 1-
7 Pair 4+
8 Pair 4-
4 Pair 3+
5 Pair 3-
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