Cisco Systems 3550 manual Table B-3 Console Port Signaling Using a DB-25 Adapter

Appendix B Connector and Cable Specifications

Cable and Adapter Specifications

Table B-3lists the pinouts for the console port, RJ-45-to-DB-25 female DTE adapter, and the console device. The RJ-45-to-DB-25 female DTE adapter is not supplied with the switch. You can order a kit (part number ACS-DSBUASYN=) containing this adapter from Cisco.

Table B-3 Console Port Signaling Using a DB-25 Adapter

Switch Console	RJ-45-to-DB-25	Console
Port (DTE)	Terminal Adapter	Device
Signal	DB-25 Pin	Signal
RTS	5	CTS
DTR	6	DSR
TxD	3	RxD
GND	7	GND
GND	7	GND
RxD	2	TxD
DSR	20	DTR
CTS	4	RTS

Catalyst 3550 Multilayer Switch Hardware Installation Guide

B-6 OL-6155-01