Rainbow Electronics FARGO MAESTRO 100 (with TCP_IP) - Manual (Page 601)

Audio Commands
DTMF Signals +VTS
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WM_DEV_OAT_UGD_049 - 001 VOLUME 4 August 23, 2007
21.15 DTMF Signals +VTS
21.15.1 Description
The product enables the application to send DTMF tones over the GSM network. This
command enables tones to be transmitted, only when there is an active call.
21.15.2 Syntax
Action command
AT+VTS=<Tone>
OK
Read command
None
Test command
AT+VTS=?
+VTS: (list of supported <Tone>s)
OK
21.15.3 Parameters and Defined Values
<Tone>:
DTMF tone to transmit
values are in {0-9,*,#,A,B,C,D}
21.15.4 Parameter Storage
None.
21.15.5 Examples
Command Responses
AT+VTS=? +VTS: (0-9,*,#,A,B,C,D)
OK
AT+VTS="A" OK