Cisco Catalyst 2810 Series Manual page 17

Cisco - Connecting a Terminal to the Console Port on Catalyst Switches
Console RJ-45-to-RJ-45
Port Rollover Cable
RJ-45
Signal
Pin
RTS 1¹
DTR 2
TxD 3
GND 4
GND 5
RxD 6
DSR 7
CTS 8¹
¹Pin 1 is connected internally to Pin 8.
Modem Adapter
Use the RJ-45-to-RJ-45 rollover cable and the RJ-45-to-DB-25 male DCE adapter (labeled
"Modem") to connect the console port to a modem.
serial auxiliary port, the RJ-45-to-RJ-45 rollover cable, and the RJ-45-to-DB-25 male DCE
adapter.
Table I-3: Port Mode 1: Console Port Signaling and Pinouts (Modem Adapter)
Console RJ-45-to-RJ-45
Port Rollover Cable
RJ-45
Signal
Pin
RTS 1¹
DTR 2
TxD 3
GND 4
GND 5
RxD 6
DSR 7
CTS 8¹
¹Pin 1 is connected internally to Pin 8.
http://www.cisco.com/warp/public/473/9.html (17 of 19) [9/4/2003 12:36:03 PM]
RJ-45-to-DB-25
Terminal
Adapter
RJ-45
DB-25 Pin
Pin
8 5
7 6
6 3
5 7
4 7
3 2
2 20
1 4
RJ-45-to-DB-25
Modem Adapter
RJ-45
DB-25 Pin
Pin
8 4
7 20
6 3
5 7
4 7
3 2
2 8
1 5
Console
Device
Signal
CTS
DSR
RxD
GND
GND
TxD
DTR
RTS
Table I-3 lists the pinouts for the asynchronous
Modem
Signal
RTS
DTR
TxD
GND
GND
RxD
DCD
CTS