Siemens AC75 - Manual (Page 461)

AC75 AT Command Set
18.7 AT+VTS
s
AC75_ATC_V01.002 Page 461 of 569 10/30/06
Confidential / Released
18.7 AT+VTS DTMF and tone generation
AT+VTS
is intended to send ASCII characters or strings which cause the Mobile Switching Center (MSC) to trans-
mit DTMF tones to a remote subscriber. The command can only be used during active voice calls and offers the
following 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.
Tone duration in 1/10 seconds with tolerance. If not specified current setting of
AT+VTD
is used.
The minimum duration of DTMF signals is 300ms.
1...255
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
ERROR
+CME ERROR
Reference(s) PIN ASC0 ASC1 USB MUX1 MUX2 MUX3 Charge
4
Last
GSM 07.07 - + + + + + + - - -
<dtmfString>
(str)
<dtmf>
(str)
<duration>
(num)