At+Vts Dtmf And Tone Generation - Quectel M35 Command Manual

13.4. AT+VTS DTMF and Tone Generation

AT+VTS DTMF and Tone Generation
Test Command
AT+VTS=?
Write Command
AT+VTS=<dtmf-string>
Reference
GSM 07.07
Parameter
<dtmf-string> It has a max length of 20 characters, must be entered between double quotes (" ") and
consists of combinations of the following separated by commas. But a single character
does not require quotes
1) <dtmf>
2) {<dtmf>, <duration>} This is interpreted as a DTMF tone whose duration is
<duration> Duration of the tone in 1/10 seconds range :1-255
Example
ATD10086;
OK
AT+VTS=1
OK
M35_AT_Commands_Manual
Response
+VTS: (list of supported <dtmf>s), ,(list of supported
<duration>s)
OK
Response
This command allows the transmission of DTMF tones and
arbitrary tones in voice mode. These tones may be used (for
example) when announcing the start of a recording period.
OK
If error is related to ME functionality:
+CME ERROR: <err>
A single ASCII characters in the set 0-9, #,*, A-D. This is
interpreted as a sequence of DTMF tones whose duration
is set by the +VTD command
determined by <duration>
// Establish a call
// Send a single DTMF tone according to the prompts of voice
Confidential / Released
GSM/GPRS Module
M35 AT Commands Manual
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