O1 | Return to Data Mode and initiate an equalizer retrain |
O2 | Same as O1 with speed fall forward |
O3 | Same as O1 with speed fall backward |
PSet Pulse dial as default
Q0 | Modem sends responses |
Q1 | Modem does not send responses |
Sr? | Read and display value in register r. |
Sr=n | Set register r to value n (n = |
T | Set Tone Dial as default |
V0 | Numeric responses |
V1 | Word responses |
X0 | Hayes Smartmodem 300 compatible responses/blind |
| dialing |
X1 | Same as X0 plus all CONNECT responses/blind dialing |
X2 | Same as X1 plus dial tone detection |
X3 | Same as X1 plus busy detection/blind dialing |
X4 | All responses and dial tone and busy signal detection |
Y0 | Modem does not send or respond to break signals |
Y1 | Modem sends break signal for four seconds before |
| disconnecting |
Z0 | Reset and retrieve active profile 0 |
Z1 | Reset and retrieve active profile 1 |
| |
Extended AT Commands | |
&C0 | Force Carrier Detect Signal High (ON) |
&C1 | Turn on CD when remote carrier is present |
&D0 | Modem ignores the DTR signal |
&D1 | Modem returns to Command Mode after DTR toggle |
&D2 | Modem hangs up, returns to the Command Mode after |
| DTR toggle |
&D3 | Resets modem after DTR toggle |
&E0 | Disable automatic fall forward/back |
&E1 | Enable automatic fall forward/back |
&F0 | Recall factory default configuration (V.42bis/ |
| hardware flow control enabled) |
&F1 | Recall factory default with software flow control |
| enabled |
&F2 | Recall factory default with hardware flow control |
| enabled (same as &F) |
&F3 | Same as &F1 except for Macintosh computers (&F1 |
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