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AT Command Set

TC3X_ATC_01_V04.00 Page 118 of 204 29.05.2002

4.46 AT+VTS DTMF and tone generation (<Tone> in {0-9, *, #, A, B, C, D})

Test command

AT+VTS=?

Response

+VTS: (list of supported <dtmf>s)[, (list of supported <duration>s)] OK

Parameter

See write command

Write command

AT+VTS=<dtmf-

string>

AT+VTS=<dt-

mf>,<duration>

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.

· This is interpreted as a sequence of DTMF tones whose duration is set

with the +VTD command.

· This is interpreted as a DTMF tone whose duration is determined by

<duration>.

If error is related to ME functionality:

+CME ERROR: <err>

Parameter

<dtmfstring> String of ASCII characters in the set 0-9,#,*,A, B, C, D. Maximal

length of the string is 29. The string has to be entered between

double-quote characters (””).

<dtmf> ASCII character in the set 0-9,#,*, A, B, C, D.

<duration> 1-255 duration of a tone in 1/10 second

Reference

GSM 07.07

Note

This command only works during active voice call.

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