Allied Telesis AT-8600 Hardware Reference Manual page 20

20
C613-03080-00 REV G
The following figure shows the pin wiring diagram for a DCE RS-232 Terminal
Port (DB9 female connector) male to male modem cable
DB9 Male
(to switch/DCE)
Not connected 1
→ (TXD)
2
← (RXD)
3
← (CD)
4
(GND)
5
→ (DTR)
6
← (CTS)
7
→ (RTS)
8
(RING) 9
Pin 5
Pin 1
Pin 9
Pin 6
DB9 Male Pin View
Notes:
→ Output from switch; ← Input to switch
(1)
(2) Cable version 1.0.
The switch's RS-232 terminal port has a DCE female socket so that you can use
a straight-through cable when connecting the switch to a terminal or PC.
However, output from the show asyn command still has a DTE perspective.
The internal DTE pin roles are listed in the following table.
Pin
2
3
4
5
6
7
8
DB9 Male
(to modem/DCE)
Cable
Role
TXD
RXD
CD
GND
DTR
CTS
RTS
AT-8600 Series
3 (TXD)
2 (RXD)
1 (DCD)
5 (GND)
4 (DTR)
8 (CTS)
7 (RTS)
9
6
Not connected
Pin 1
Pin 5
Pin 6
Pin 9
DB9 Male Pin View
DB9MDB9Fsw