Interlogix NS3500-28T-4S User Manual - Manual (Page 362)

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3 Rx + (receive) Tx + (transmit)
4, 5 Not used
6 Rx - (receive) Tx - (transmit)
7, 8 Not used
The standard cable, RJ-45 pin assignment
The standard RJ-45 receptacle/connector
There are 8 wires on a standard UTP/STP cable and each wire is color-coded. The following shows the pin allocation
and color of straight cable and crossover cable connection:
Straight-through Cable SIDE 1 SIDE 2
SIDE 1
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
SIDE 2
1 = White /
Orange
2 = Orange
3 = White / Green
4 = Blue
5 = White / Blue
6 = Green
7 = White /
Brown
8 = Brown
1 = White / Orange
2 = Orange
3 = White / Green
4 = Blue
5 = White / Blue
6 = Green
7 = White / Brown
8 = Brown
Crossover Cable SIDE 1 SIDE 2