(Al Computer) 
(Al Modem).Questo cavo puo' essere usato per connessione DTE to DCE (computer-modem senza il controllo hardware handshaking.
(Al Computer) (Al Modem).
25 PIN D-SUB FEMMINA al Computer
25 PIN D-SUB MASCHIO al Modem
| Female | Male | Dir | |
|---|---|---|---|
| Shield Ground | 1 | 1 |  |
| Transmit Data | 2 | 2 |  |
| Receive Data | 3 | 3 |  |
| Request to Send | 4 | 4 | |
| Clear to Send | 5 | 5 | |
| Data Set Ready | 6 | 6 | |
| System Ground | 7 | 7 | |
| Carrier Detect | 8 | 8 | |
| Data Terminal Ready | 20 | 20 | |
| Ring Indicator | 22 | 22 | |