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Table 4: AT+ (Plus) Commands
Command | Option | Description | |||
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| D | Generate default DTMF Tone, default duration. | |||
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| {t,n} | t specifies a DTMF tone; t = | |||
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| n specifies tone duration n/100 seconds; n = | |||
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| {f,g,n} | f and g specify a tone pair, f Hz and g Hz; in the | |||
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| range n | |||
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| Specifies | |||
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| 500 | |||
| Example: | AT+VTS=4,{},[1000,1300,50],8,{*,5},[,,100],5 | |||
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| This example specifies the following sequence: | |||
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| 1. | Play DTMF 4 for the duration stored in +VTD | ||
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| 2. | Play silence for the duration stored in +VTD | ||
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| 3. | Play tone pair at 1000 Hz and 1300 Hz for 500 ms | ||
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| 4. | Play DTMF 8 for a duration stored in +VTD | ||
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| 5. Play DTMF * for 50 ms | |||
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| 6. | Play silence for 1 second | ||
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| 7. | Play DTMF 5 for the duration stored in +VTD | ||
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+VTX |
| Enter | |||
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| Data/Fax/Speakerphone modem only | |||
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| Note | |
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| The speakerphone state does not have to be reset |
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| after recording to the line or playing a message |
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| to the line. The baud rate is not set before the |
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| StartPlay and StartRecord commands. The baud |
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| rate is not reset after the StopPlay and |
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| StopRecord commands. |
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