(at the DTE)
(at the DCE)
CORRECT?
25 PIN D-SUB MALE at the DTE (Computer).
25 PIN D-SUB FEMALE at the DCE (Modem).
| Pin | Name | Dir | Description | Circuit | Paired with |
|---|---|---|---|---|---|
| 1 | Shield | 18 | |||
| 2 | TxD | Transmitted Data | BA | 14 | |
| 3 | RxD | Received Data | BB | 16 | |
| 4 | RTS | Request To Send | CA | 19 | |
| 5 | CTS | Clear To Send | CB | 13 | |
| 6 | DSR | Data Set Ready | CC | 22 | |
| 7 | SGND | Signal Ground | Ground | 21 | |
| 8 | DCD | Data Carrier Detect | CF | 10 | |
| 9 | Rtrn Receive Sig. Elmnt Timing | DD | 17 | ||
| 10 | Rtrn DCD | CF | 8 | ||
| 11 | Rtrn Transmit Sig. Elmnt Timing | DA | 24 | ||
| 12 | Rtrn Transmit Sig. Elmnt Timing | DB | 15 | ||
| 13 | Rtrn CTS | CB | 5 | ||
| 14 | Rtrn TxD | BA | 2 | ||
| 15 | Transmit Signal Element Timing | DB | 12 | ||
| 16 | Rtrn RxD | BB | 3 | ||
| 17 | Receive Signal Element Timing | DD | 9 | ||
| 18 | LL | Local Loopback | LL | 1 | |
| 19 | Rtrn RTS | CA | 4 | ||
| 20 | DTR | Data Terminal Ready | CD | 23 | |
| 21 | RL | Remote Loopback | RL | 7 | |
| 22 | Rtrn DSR | CC | 6 | ||
| 23 | Rtrn DTR | CD | 20 | ||
| 24 | Transmit Signal Element timing | DA | 11 | ||
| 25 | Test Mode | TM |
Note: Direction is DTE (Computer) relative DCE (Modem).
| Contributor: | Joakim Ögren, Greg A. Woods |
| Source: | RS530 Page at Connectivity Knowledge Platform (Made IT) |
Copyright © The Hardware Book Team 1996-2004.
May be copied and redistributed, partially or in whole, as appropriate.
Document last modified: 2002-01-13