AT Commands (cont’d)
Command | Description | Default |
O0 | Go into online data mode without retrain |
|
| sequence |
|
O1 | Go online data mode with retrain sequence |
|
P | Set pulse dial |
|
Q0 | Enable result code | X |
Q1 | Disable result code |
|
Sn=m | Write m to |
|
Sn? | Return the value of |
|
T | Set dial tone |
|
V0 | Set numeric result code |
|
V1 | Set verbose result code | X |
W0 | CONNECT reports DTE speed | X |
W1 | CONNECT reports DTE speed, carrier |
|
| speed and protocol |
|
W2 | CONNECT reports carrier speed |
|
X0 | Report CONNECT message only |
|
| Ignore dial tone and busy signal |
|
X1 | Report CONNECT message according to |
|
| ATW |
|
| Ignore dial tone and busy tone signal |
|
X2 | Report CONNECT message according to |
|
| ATW |
|
| Ignore busy signal |
|
X3 | Report CONNECT message according to |
|
| ATW |
|
| Ignore dial tone |
|
X4 | Report CONNECT message according to | X |
| ATW |
|
Y0 | Disable long space disconnect | X |
Y1 | Enable long space disconnect |
|
Z | Soft reset |
|
&C0 | CD is always on |
|
&C1 | CD follows the state of carrier | X |
&D0 | Ignore DTR |
|
Modem Commands
