X.21 DTE and DCE Serial Cable Pinouts
Table
■X.21 DTE synchronous serial cable (Part Number
■
Table A-17 X.21 DTE and DCE Cable Pinouts (DB-15)
15 Pin1 |
| DTE DCE |
Signal | Direction | |
Shield GND | — | |
|
|
|
Transmit+ | → | |
Transmit- | → | |
|
|
|
Control+ | → | |
Control- | → | |
|
|
|
Receive+ | ← | |
Receive- | ← | |
|
|
|
Indication+ | ← | |
Indication- | ← | |
|
|
|
Timing+ | ← | |
Timing- | ← | |
|
|
|
Circuit GND | — | |
Shield | — | — |
1
Any pin not referenced is not connected.
