Specifications

TC35i AT Command Set
Confidential / Released
TC35i_ATC_V01.05 Page 153 of 278 04.08.2003
4.50 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
1.
AT+VTS=<dtmf-string>
2.
AT+VTS=<dtmf>[,<duration>]
Response
The Write command is intended for sending one or more ASCII
characters which cause the MSC (Mobile Switching Center) to
transmit DTMF tones to a remote subscriber.
1. Allows the user to send a sequence of DTMF tones with a dura-
tion that was defined with the AT+VTD command.
2. Allows the user to send a single DTMF tone. In this case, the du-
ration can be indvidually determined during the call.
OK
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 must
be enclosed in quotation marks (””).
<dtmf> ASCII character in the set 0-9,#,*, A, B, C, D.
<duration> 1-255 duration of a tone in 1/10 second (if not speci-
fied the current setting of AT+VTD is used, which is 1
upon switch-on.)
Reference
GSM 07.07
Note
The Write command can only be used during an active voice call.