C
ABLES

B-6

Console Port Pin Assignments
The DB-9 serial port on the switch’s rear panel is used to connect
to the switch for out-of-band console configuration. The on-board
menu-driven configuration program can be accessed from a
terminal, a PC running a terminal emulation pr ogram, or from a
remote location via a modem connection. The pin assignments
used to connect to the serial port are provided in the following
tables.
Figure B-1. DB-9 Console Port Pin Numbers

DB-9 Port Pin Assignments

EIA
Circuit
CCITT
Signal
Description Switch’s
DB9 DTE
Pin #
PC DB9
DTE
Pin #
Modem
DB25
DCE Pin #
Signal
Direction
DTE-DCE
CF 109 DCD (Data Carrier Detected) 1 1 8 <------
BB 104 RxD (Received Data) 2 2 3 <------
BA 103 TxD (Transmitted Data) 3 3 2 ------>
CD 108.2 DTR (Data Terminal Ready) 4 4 20 ------>
AB 102 SG (Signal Ground) 5 5 7 -------
CC 107 DSR (Data Set Ready) 6 6 6 <------
CA 105 RTS (Request-to-Send) 7 7 4 ------>
CB 106 CTS (Clear-to-Send) 8 8 5 <------
CE 125 RI (Ring Indicator) 9 9 22 <------