 |
||||
| Pin | Signal | EIA CKT |
From DCE |
To DCE |
|---|---|---|---|---|
| 1 | Frame Ground | AA | ||
| 2 | Transmitted Data | BA | D (Data) | |
| 3 | Received Data | BB | D | |
| 4 | Request to Send | CA | C (Control) | |
| 5 | Clear to Send | CB | C | |
| 6 | Data Set Ready | CC | C | |
| 7 | Signal Gnd/Common Return | AB | ||
| 8 | Rcvd. Line Signal Detector | CF | C | |
| 11 | Undefined | |||
| 12 | Secondary Rcvd. Line Sig. Detector | SCF | C | |
| 13 | Secondary Clear to Send | SCB | C | |
| 14 | Secondary Transmitted Data | SBA | D | |
| 15 | Transmitter Sig. Element Timing | DB | T (Timing) | |
| 16 | Secondary Received Data | SBB | D | |
| 17 | Receiver Sig. Element Timing | DD | T | |
| 18 | Undefined | |||
| 19 | Secondary Request to Send | SCA | C | |
| 20 | Data Terminal Ready | CD | C | |
| 21 | Sig. Quality Detector | CG | C | |
| 22 | Ring Indicator | CE | C | |
| 23 | Data Sig. Rate Selector (DCE) | CI | C | |
| 24 | Transmitter Sig. Element Timing | DA | T | |
| 25 | Undefined | |||
