Use the chart below as a guide for EIA-422 modem wiring. Pin numbers have been omitted because they vary from product to product. For Digi pin numbers, see Digi EIA-422 Connector Wiring. For modem pin numbers, see your modem's documentation.
| DTE (Digi End) | DCE (Modem) | |||
|---|---|---|---|---|
| Signal | Lead | Lead | Signal | |
|
TxD |
+ |
Connected to |
+ |
TxD |
|
- |
Connected to |
- |
||
|
RxD |
+ |
Connected to |
+ |
RxD |
|
- |
Connected to |
- |
||
|
RTS |
+ |
Connected to |
+ |
RTS |
|
- |
Connected to |
- |
||
|
CTS |
+ |
Connected to |
+ |
CTS |
|
- |
Connected to |
- |
||
|
GND |
Connected to |
GND |
||