AT Commands (cont’d)
Command | Description | Default |
\N1 | Select normal mode connection |
|
\N2 | Select LAPM and MNP connection |
|
\N3 | Select LAPM, MNP and normal mode | X |
| connection |
|
\N4 | Select only LAPM connection |
|
\N5 | Select only MNP connection |
|
\V0 | Disable extended result code |
|
\V1 | Enable extended result code |
|
%C0 | Disable data compression |
|
%C1 | Enable MNP 5 data compression |
|
| negotiation |
|
%C2 | Enable V.42 bis data compression |
|
%C3 | Enable both V.42 bis and MNP5 data | X |
| compression |
|
+MS | Select modulation (see the next table for |
|
| values) |
|
| The command format is: |
|
| +MS=<mod>,<automode>,<min_rate>,<m |
|
| ax_rate> |
|
|
|
| Modulation Values | |
<mod> | Modulation |
| Possible Rate | |
0 | V.21 |
| 300 | |
1 | V.22 |
| 1200 | |
2 | V.22 bis |
| 2400, 1200 | |
9 | V.32 |
| 9600, 4800 | |
10 | V.32 bis |
| 14400, 12000, 9600, 7200, 4800 | |
11 | V.34 |
| 336000,31200, 28800, 26400, 24000, | |
|
|
|
| 21400, 19200, 16800, 14400, 12000, |
|
|
|
| 9600, 7200, 4800, 2400 |
<automode> |
|
|
| |
0 |
| Disables automatic modulation negotiation | ||
1 |
| Enables automatic modulation negotiation using V.8 | ||
|
| bis/V.8 or V.32 bis Annex A. | ||
Modem Commands
