User's Manual

1-16
Part No. 001-4008-101/102
Some point-to-point FDX landline modems or line drivers may require the use of DOX mode and an
alternate pinout for DTR, DCD, CTS and RTS as shown in Figure 1-11.
Figure 1-11 DCE Crossover Cable for DOX Mode
1
2
3
7
5
6
4
8
9
DE-9M
4
3
2
8
5
1
7
DE-9M
DCD
RXD
TXD
RTS
GND
DTR
CTS
DTR
TXD
RXD
CTS
GND
DCD
R
TS