SMC Networks 1000 Installation Manual page 47

Note that for 1000BASE-T operation, all four pairs of wires are used
for both transmit and receive.
Pin MDI Signal Name
1 Transmit Data plus (TD1+)
2 Receive Data minus (RD1-)
3 Transmit Data plus (TD2+)
4 Transmit Data plus (TD3+)
5 Receive Data minus (RD3-)
6 Receive Data minus (RD2-)
7 Transmit Data plus (TD4+)
8 Receive Data minus (RD4-)
MDI-X Signal Name
Transmit Data plus (TD2 +)
Receive Data minus (RD2-)
Transmit Data plus (TD1+)
Transmit Data plus (TD4+)
Receive Data minus (RD4-)
Receive Data minus (RD1-)
Transmit Data plus (TD3+)
Receive Data minus (RD3-)
C
ABLES
B-3