MC55 AT Command Set

16.7 AT+VTS

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mobile

16.7AT+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

Test Command

AT+VTS=?

Response(s)

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

OK

Write Command

AT+VTS=<dtmfString>

Response(s)

OK

Write Command

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

Response(s)

OK

PIN ASC0 ASC1 MUX1 MUX2 MUX3

￿ ￿ ￿ ￿ ￿ ￿

Reference(s)

GSM 07.07

Parameter Description

<dtmfString>(str)

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 ("...").

<dtmf>(str)

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

MC55_ATC_V01.05

Page 399 of 469

2/10/04

Confidential / Released

 

 

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Siemens MC55 manual 16.7 AT+VTS Dtmf and tone generation, At+Vts=?, AT+VTS=dtmfString, AT+VTS=dtmf, duration