| 4 AT Commands, |
Command: | +MS= Modulation Selection |
Values: | See description. |
Default: | See description. |
Description: | This |
| tionally, enables or disables automode, specifies the lowest and |
| highest connection rates, selects |
| and specifies the highest transmit rate using one to five |
| subparameters. |
| The command format is |
| +MS=[mod][,[automode][,[min_RX_rate][,[max_RX_rate][,[x_law] |
| [,[reserved][,[max_TX_rate]]]]]]]<CR> |
| Subparameters that are not entered retain their current value. |
| Commas separate optional subparameters, and should be in- |
| serted to skip a subparameter. Example: +MS=,0,<CR> disables |
| automode and keeps all other settings at their current values. |
| +MS? Reports current options in the format |
| mod,automode,min_RX_rate,max_RX_rate,x_law,reserved,max_TX_rate. |
| Example: 56,1,300,56000,0,0,33600. |
| +MS=? Reports supported options in the format (list of supported mod |
| values),(list of supported automode values),(list of supported |
| min_RX_rate values),(list of supported max_RX_rate values), |
| (list of supported x_law values), (list of supported reserved |
| values),(list of supported max_TX_rate values). |
| Example: |
| |
| Subparameters |
| mod A decimal number that specifies the preferred modula- |
| tion (automode enabled) or the modulation to use in originat- |
| ing or answering a connection (automode disabled). See the |
| table on the next page. |
| automode An optional numeric value that enables or disables |
| automatic modulation negotiation using V.8 bis/V.8 or V.32 |
| bis Annex A. The options are: |
| 0 = Disable automode |
| 1 = Enable automode (default) |
| min_RX_rate An optional number that specifies the lowest |
| rate at which the modem may establish a receive connection. |
| The value is decimal coded in units of bps, e.g., 2400 specifies |
| the lowest rate to be 2400 bps. See “Possible rates” in the mod |
| table. The default is 300 for 300 bps. |
| max_RX_rate An optional number that specifies the highest |
| rate at which the modem may establish a receive connection. |
| The value is decimal coded in units of bps, e.g., 28800 specifies |
| the highest rate to be 28800 bps. See “Possible rates” in the mod |
| table. The default is 56000, for 56000 bps. |
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