Specifications

Hardware Reference 33
C613-03086-00 REV A
Figure 1-13: Pin wiring diagram for a DCE asynchronous port (DB9 female connector) to
modem cable.
Figure 1-14: Pin wiring diagram for a standard modem cable.
Notes:
(1) → Output from router; ← Input to router
(2) Cable version 1.0.
DB9MDB9F
3 (TXD)
2 (RXD)
1 (DCD)
5 (GND)
4 (DTR)
8 (CTS)
7 (RTS)
9
6
Not connected
1
2
3
4
5
6
7
8
9
Cable
Pin 9
Pin 6
Pin 5
Pin 1
DB9 Male Pin View
Pin 6
Pin 9
Pin 1
Pin 5
DB9 Male Pin View
DB9 Male
(to router/DCE)
DB9 Male
(to modem/DCE)
Not connected
→
←
←
→
←
→
DB25
Male
1
2
3
4
5
6
7
8
20
22
6
5
8
7
4
2
3
1
→
←
→
←
←
→
←
(TXD)
(RXD)
(RTS)
(CTS)
(GND)
(DCD)
(DTR)
(RING)
Not connected
Not connected
Notes:
(1) → Output from switch or router; ← Input to switch or router.
(2) Cable version 1.0.
MODEM
RJ45
(to switch or router)