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TC35i AT Command Set

15.7 AT+VTS

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TC35i_ATC_V02.07 Page 371 of 439 1/30/04

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15.7 AT+VTS DTMF and tone generation

The Write command is intended to send ASCII characters or strings which cause the Mobile Switching Center

(MSC) to transmit DTMF tones to a remote subscriber. It works during active voice calls only and offers the fol-

lowing variants:

•

AT+VTS=<dtmfString> allows to send a sequence of DTMF tones with a duration defined with AT+VTD.

•

AT+VTS=<dtmf>[,<duration>] allows to send a single DTMF tone. In this case, the duration can be ind-

vidually determined during the call.

Syntax

Parameter Description

String of ASCII characters in the set 0-9,#,*,A, B, C, D. Maximal length of the string is 29. The string must be

enclosed in quotation marks ("...").

ASCII character in the set 0...9,#,*, A, B, C, D.

Test Command

AT+VTS=?

Response(s)

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

Write Command

AT+VTS=<dtmfString>

Response(s)

Write Command

AT+VTS=<dtmf>[, <duration>]

Response(s)

PIN ASC0 MUX1 MUX2 MUX3

! % % % %

Reference(s)

GSM 07.07

(str)

<dtmf>

(str)

1 2 ... 366 367 368 369 370 371 372 373 374 375 376 ... 438 439

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