V.24 & RS232C Link Pinouts
The connector shown here and pinouts described here correspond to the connector labeled “RS232 / V.24” on the back of the P1705 & P1730.
|
|
|
| 13 | 1 |
|
|
|
| DB25 Female DTE |
|
|
| ||
|
|
|
| 25 | 14 |
|
|
|
|
|
|
|
|
|
|
Contact | CCITT |
| Circuit | Circuit |
| Direction | |
Number | Circuit |
|
| Name |
| To | From |
| Number |
|
|
|
| DCE | DCE |
1 | 101 |
| AA | Protective Ground |
| NA | |
2 | 103 |
| BA | Transmitted Data |
| X |
|
3 | 104 |
| BB | Received Data |
|
| X |
4 | 105 |
| CA | Request to Send |
| X |
|
5 |
|
|
|
|
|
| |
6 | 107 |
| CC | Data Set Ready |
|
| X |
7 | 102 |
| AB | Signal Ground |
| NA | |
8 | 109 |
| CF | Received Line Signal Detector (CD) |
| X | |
9 |
|
|
|
|
|
| |
10 |
|
|
|
|
|
| |
11 |
|
|
|
|
|
| |
12 |
|
|
|
|
|
| |
13 |
|
|
|
|
|
| |
14 |
|
|
|
|
|
| |
15 | 114 |
| DB | Transmit Signal Element Timing (DCE |
| X | |
|
|
|
| Source) |
|
|
|
16 |
|
|
|
|
|
| |
17 | 115 |
| DD | Receive Signal Element Timing (DCE Source) |
| X | |
18 | 141 |
|
| Local Loopback |
| X |
|
19 |
|
|
|
|
|
| |
20 | 108.2 |
| CD | Data Terminal Ready |
| X |
|
21 |
|
|
|
|
|
| |
22 | 125 |
| CE | Ring Indicator |
|
| X |
23 |
|
|
|
|
|
| |
24 | 113 |
| DA | Transmit Signal Element Timing (DTE Source) | X |
| |
25 |
|
|
|
|
|
| |
Figure D-5 RS232 Link Pinouts
The connecting cable must be a shielded cable.
NOTE For U.K. Approval:
The connecting cable may be any length between 0 and 5M. Each end must be terminated in a male 25 pin X.21 bis connector as defined in