Allied Telesis AT-8516F/SC Installation Manual page 85

Table 12 lists the RJ-45 pin signals for the two 10/100/1000-Base-T ports
on the AT-8550GB switch when the ports are operating at 1000 Mbps.
Table 12 MDI and MDI-X Pin Signals (1000Base-T)
MDI Configuration
Pinout
1
2
3
4
5
6
7
8
AT-8500 Series Fast Ethernet Switch Installation Guide
MDI-X Configuration
Pair Pinout
Pair 1 + 1
Pair 1 - 2
Pair 2 + 3
Pair 3 + 4
Pair 3 - 5
Pair 2 - 6
Pair 4 + 7
Pair 4 - 8
Pair
Pair 2 +
Pair 2 -
Pair 1 +
Pair 4 +
Pair 4 -
Pair 1 -
Pair 3 +
Pair 3 -
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