AT Command

Description

AT+CSNS is used to generate DTMF tones


Support
Simcom Module Tutorial

Examples

//What is supported
AT+CLDTMF=?

+CLDTMF: (1-100),(0-9,A,B,C,D,*,#)

OK
//Stop the DTMF Tone
AT+CLDTMF

OK
/Start DTMF Tone
AT+CLDTMF=5,0

OK

KeywordsAT+CLDTMF syntax, examples, parameters, error, input, response.

With Online AT Command Tester tool, you can test this feature.

With Online AT Command Tester tool, you can also get device diagnostic information easily,