3Com 3800 - Manual (Page 33)

Connecting Equipment to the Console Port 2-5
Figure 2-2 shows the pin-outs for a 9-pin to RS-232 25-pin null modem
cable.
Figure 2-2 Null modem cable pin-outs
Figure 2-3 shows the pin-outs for a 9-pin to 9-pin PC-AT serial null
modem cable.
Figure 2-3 PC-AT serial cable pin-outs
Screen
TxD
RxD
Ground
RTS
CTS
DSR
DCD
DTR
Cable connector: 9-pin female
Switch 3800
Cable connector: 25-pin male/female
PC/Terminal
Screen
RxD
TxD
Ground
RTS
DTR
CTS
DSR
DCD
Shell
3
2
5
7
8
6
1
4
1
3
2
7
4
20
5
6
8
Screen
DTR
TxD
RxD
CTS
Ground
DSR
RTS
DCD
Cable connector: 9-pin female
Switch 3800
Cable connector: 9-pin female
PC-AT Serial Port
Screen
DCD
RxD
TxD
DTR
Ground
DSR
RTS
CTS
Shell
4
3
2
8
5
6
7
1
Shell
1
2
3
4
5
6
7
8
SW3800.BK Page 5 Tuesday, May 5, 1998 5:20 PM