MultiModemDID User Guide | Chapter 4 - AT Commands, | ||
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Command: +MS= | Modulation Selection | ||
Values: | See description. |
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Defaults: | See description. |
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Description: | This | ||
| disables automode, and specifies the highest downstream and | ||
| upstream connection rates using one to four subparameters. | ||
| The command syntax is | ||
| +MS=[mod][,[automode][,[0][,[max_rate][,[0][,[max_rx_rate]]]]]]<CR> | ||
| Subparameters that are not entered retain their current value. | ||
| Commas separate optional subparameters and must be | ||
| inserted to skip a subparameter. Example: +MS=,0<CR> | ||
| disables automode and keeps other settings at current values. | ||
+MS=? Reports supported options in the format (list of supported mod | |||
| values),(list of supported automode values),(0),(list of | ||
| supported max_rate values),(0),(list of supported max_rx_rate | ||
| values). Example: +MS: (BELL103, V21, BELL212A, V22, | ||
| V22B, V23C, V32, V32B, V34, V90, V92), (0, 1), (0), | ||
| (0), |
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+MS? Reports current options in the format mod, automode, 0, | |||
| max_rate, 0, max_rx_rate. Example: +MS: V92, 1, 0, 31200, 0, | ||
| 56000. |
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Subparameters |
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mod | Specifies the preferred modulation (automode enabled) or the | ||
| modulation to use in originating or answering a connection | ||
| (automode disabled). The default is V92. | ||
| mod | Modulation | Possible rates (bps)1 |
| V922 | V.92 | 56000, 54666, 53333, 52000, 50666, 49333, |
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| 48000, 46666, 45333, 44000, 42666, 41333. |
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| 40000, 38666, 37333, 36000, 34666, 33333, |
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| 32000, 30666, 29333, or 28000 |
| V903 | V.90 | 56000, 54666, 53333, 52000, 50666, 49333, |
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| 48000, 46666, 45333, 44000, 42666, 41333. |
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| 40000, 38666, 37333, 36000, 34666, 33333, |
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| 32000, 30666, 29333, or 28000 |
| V34 | V.34 | 33600, 31200, 28800, 26400, 24000, |
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| 21600,19200, 16800, 14400, 12000, 9600, 7200, |
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| 4800, or 2400 |
| V32B | V.32bis | 14400, 12000, 9600, 7200, or 4800 |
| V32 | V.32 | 9600 or 4800 |
| V22B | V.22bis | 2400 or 1200 |
| V22 | V.22 | 1200 |
| V23C | V.23 | 1200 |
| V21 | V.21 | 300 |
| Bell212A | Bell 212A | 1200 |
| Bell103 | Bell 103 | 300 |
Notes:
1.See optional <automode>, <max_rate>, and <max_RX_rate> subparameters.
2.Selects V.92 modulation as first priority. If a V.92 connection cannot be established, the modem attempts V.90, V.34, V.32bis, etc.
3.Selects V.90 modulation as first priority. If a V.90 connection cannot be established, the modem attempts V.34, V.32bis, etc.
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