Installation guide

AT-8000 Series Fast Ethernet Switches Installation Guide
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Table 11 lists the RJ-45 port pin signals for a twisted pair
10/100/1000Base-T port in the MDI and MDI-X configurations at
1000 Mbps.
Table 11 MDI and MDI-X Pin Signals (1000Base-T)
MDI Configuration MDI-X Configuration
Pinout Pair Pinout Pair
1 Pair 1 + 1 Pair 2 +
2 Pair 1 - 2 Pair 2 -
3 Pair 2 + 3 Pair 1 +
4 Pair 3 + 4 Pair 4 +
5 Pair 3 - 5 Pair 4 -
6 Pair 2 - 6 Pair 1 -
7 Pair 4 + 7 Pair 3 +
8 Pair 4 - 8 Pair 3 -