Console to 25-Pin DTE Port on PC
Switch's 9-Pin
Serial Port
2 RXD
3 TXD
5 SGND
No other pins are used.
Null Modem
<---------
TXD
-----------
RXD
-----------
SGND
PC's 25-Pin
DTE Port
------------
2 TXD
---------->
3 RXD
----------
7 SGND
Console Port Pin Assignments
B-5