Specifications

AT Command Set Reference
Ver. 1.00
GSM1308AT001 Page 106 Ver. 1.00 – 10/29/2008
2.1.5.2. AT+VTS DTMF and Tone Generation
Command Function This command allows the transmission of
DTMF tones and arbitrary tones (see note).
These tones may be used (for example)
when announcing the start of a recording
period. The command is write only. In this
profile of commands, this command does
not operate in data mode of operation
Command Functional Audio Functions
Group
Command Format Query AT+VTS=?
Response +VTS: (0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, #,
*)
OK
Write Format N/A
Response N/A
Read Format N/A
Response N/A
Execution Format AT+VTS=<DTMF>
Response OK