| X.21 DTE Cable Pinouts Cisco Part#: CAB-X21MT= |
Serial
Cable Guide Serial Cabling Options Explained |
|---|
| 60 Pin1 | Signal | Description | Direction | 15 Pin | Signal |
|---|---|---|---|---|---|
| J1-48 J1-47 |
GND MODE_2 |
Shorting group | - | - | - |
| J1-51 J1-52 |
GND MODE_DCE |
Shorting group | - | - | - |
| J1-46 | Shield_GND | Single | - | J2-1 | Shield GND |
| J1-11 J1-12 |
TxD/RxD+ TxD/RxD- |
Twisted pair no. 3 | --> --> |
J2-2 J2-9 |
Transmit+ Transmit- |
| J1-9 J1-10 |
RTS/CTS+ RTS/CTS- |
Twisted pair no. 2 | --> --> |
J2-3 J2-10 |
Control+ Control- |
| J1-28 J1-27 |
RxD/TxD+ RxD/TxD- |
Twisted pair no. 6 | <-- <-- |
J2-4 J2-11 |
Receive+ Receive- |
| J1-1 J1-2 |
CTS/RTS+ CTS/RTS- |
Twisted pair no. 1 | <-- <-- |
J2-5 J2-12 |
Indication+ Indication- |
| J1-26 J1-25 |
RxC/TxCE+ RxC/TxCE- |
Twisted pair no. 5 | <-- <-- |
J2-6 J2-13 |
Timing+ Timing- |
| J1-15 Shield |
Control_GND - |
Twisted pair no. 4 | - - |
J2-8 Shield |
Control GND - |
Arrows indicate signal direction: --> indicates DTE to DCE, and <-- indicates DCE to DTE.
1 Any pin not referenced is not connected.
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