SMC Networks 8612T - annexe 1, Installation Manual

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1000BASE-T Pin Assignments
1000BASE-T ports switch support automatic MDI/MDI-X operation, so
you can use straight-through cables for all network connections to PCs or
servers, or to other switches or hubs. In straight-through cable, pins 1 to 8
at one end of the cable are connected straight through to pins 1 to 8 at the
other end of the cable.
The table below shows the 1000BASE-T MDI and MDI-X port pinouts.
These ports require that all four pairs of wires be connected. Note that for
1000BASE-T operation, all four pairs of wires are used for both transmit
and receive.
Use 100-ohm Category 5 or 5e unshielded twisted-pair (UTP) or shielded
twisted-pair (STP) cable for 1000BASE-T connections. Also be sure that
the length of any twisted-pair connection does not exceed 100 meters
(328 feet).
Pin MDI MDI-X
1 Bi-directional Data One Plus (BI_D1+) Bi-directional Data Two Plus (BI_D2+)
2 Bi-directional Data One Minus (BI_D1-) Bi-directional Data Two Minus (BI_D2-)
3 BI_D2+ .... etc. BI_D1+ .... etc.
4 BI_D3+ .... etc. BI_D4+ .... etc.
5
BI_D3- .... etc. BI_D4- .... etc.
6 BI_D2- .... etc. BI_D1- .... etc.
7 BI_D4+ .... etc. BI_D3+ .... etc.
8 BI_D4- .... etc. BI_D3- .... etc.