Connector Reference
Parallel Pinouts
Serial Pinouts
Twisted Pair Cables
Shielded/ Unshielded
Cable Length Limits
Cabling FAQ
Troubleshooting

Serial Pinout Diagrams

 
ISDN Pinouts

 

Male

Female

RJ45 Male

RJ45 Female


 

Pin

Signal

Polarity

1

Power Source/ Sink 3

+

2

Power Source/ Sink 3

-

3

Transmit/ Receive

+

4

Receive/ Transmit

+

5

Receive Transmit

-

6

Transmit/ Receive

-

7

Power Source/ Sink 2

-

8

Power Source/ Sink 2

+