ADC SG-1 user manual June 30 Installation, Straight-Through and Cross-Over Cable Pin-Outs

June 30, 2006				Chapter 2: Installation
		Table 2-1. RJ-45 Pin-Outs
MDI Pin Number	MDI-X Pin Number	Signala	Symbol	Direction
1	3	Transmit Data (+)	TX+ (TX0+)	Out(Bidirect)
2	6	Transmit Data (-)	TX-(TX0-)	Out(Bidirect)
3	1	Receive Data (+)	RX+(TX1+)	In(Bidirect)
4	4	NC	(TX2+)	(Bidirect)
5	5	NC	(TX2-)	(Bidirect)
6	2	Receive Data (-)	RX-(TX1-)	In(Bidirect)
7	7	NC	(TX3-)	(Bidirect)
8	8	NC	(TX3+)	(Bidirect)
case	case	Chassis Ground

a.NC = no connection.

Figure 2-1shows the pin-outs for straight-through and cross-connect cabling.

Straight-through cable

MDI-X port

(data network device)

3

Transmit

6

1

Receive

2

Cable jack Cable jack

33

66

11

22

MDI port

(management card)

3

Receive

6

1

Transmit

2

MDI port

(data network device)

3

Receive

6

1

Transmit

2

Cross-over cable

Cable jack Cable jack

33

66

11

22

MDI port

(management card)

3

Receive

6

1

Transmit

2

Figure 2-1. Straight-Through and Cross-Over Cable Pin-Outs

SG1-UM-8500-03 2-3