1000Base-T Pin Assignments; Table B-2 1000Base-T Mdi-X And Mdi Port Pinouts; Figure B-3 Crossover Wiring - LG-Nortel LNGS8MP Installation Manual

any RJ-45 port on the switch, you can use either straight-through or crossover cable
to connect to any device type.)
You must connect all four wire pairs as shown in the following diagram to support
Gigabit Ethernet connections.
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End A 2
3
4
5
6
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8

1000BASE-T Pin Assignments

All 1000BASE-T ports 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.
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, 5e or 6 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).

Table B-2 1000BASE-T MDI-X and MDI Port Pinouts

Pin MDI-X Signal Name
1 Bi-directional Data Two Plus (BI_D2+)
2 Bi-directional Data Two Minus (BI_D2-)
3 Bi-directional Data One Plus (BI_D1+)
4 Bi-directional Data Four Plus (BI_D4+)
5 Bi-directional Data Four Minus (BI_D4-)
EIA/TIA 568B RJ-45 Wiring Standard
10/100BASE-TX Crossover Cable
White/Orange Stripe
Orange
White/Green Stripe
Blue
White/Blue Stripe
Green
White/Brown Stripe
Brown

Figure B-3 Crossover Wiring

1000BASE-T MDI-X and MDI Port Pinouts
Twisted-Pair Cable and Pin Assignments
MDI Signal Name
Bi-directional Data One Plus (BI_D1+)
Bi-directional Data One Minus (BI_D1-)
Bi-directional Data Two Plus (BI_D2+)
Bi-directional Data Three Plus (BI_D3+)
Bi-directional Data Three Minus (BI_D3-)
B
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B-3