User Guide

A-6
AsyncOS 9.1.2 for Cisco Email Security Appliances User Guide
Appendix A FTP, SSH, and SCP Access
Accessing the Email Security appliance via a Serial Connection
Pinout Details for the Serial Port in 80- and 90- Series Hardware
Pinout Details for the Serial Port in 70-Series Hardware
Figure A-2 illustrates the pin numbers for the serial port connector, and Table A-2 defines the pin
assignments and interface signals for the serial port connector.
Figure A-2 Pin Numbers for the Serial Port
Table A-2 Serial Port Pin Assignments
Pin Signal I/O Definition
1
DCD I Data carrier detect
2
SIN I Serial input
3
SOUT O Serial output
4
DTR O Data terminal ready
5
GND n/a Signal ground
6
DSR I Data set ready
7
RTS I Request to send
8
CTS O Clear to send
9
RI I Ring indicator
Shell n/a n/a Chassis ground