Cisco 1003 User Manual page 47

RJ-45-to-RJ-45 Rollover Cable Pinouts
RJ-45
Pin Signal
1 –
2 DTR
3 TxD
4 GND
5 GND
6 RxD
7 DSR
8 –
You can identify a rollover cable by comparing the two modular ends of the cable. Holding
the cables in your hand, side-by-side, with the tab at the back, the wire connected to the pin
on the outside of the left plug should be the same color as the pin on the outside of the right
plug. On Cisco cables, pin 1 is white on one connector, and pin 8 is white on the other
connector (a rollover cable reverses pins 1 and 8, 2 and 7, 3 and 6, and 4 and 5).
Pin 1
RJ-45
Pin Signal
8 –
7 DSR
6 RxD
5 GND
4 GND
3 TxD
2 DTR
1 –
Pin 1 and pin 8
should be the
same color
Cisco 1003 and Cisco 1004 User Guide 47
Pin 8
Pinouts