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how to send DTMF tones over sinch javascript web to PSTN calls?

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I have been looking for a long time but cannot find anything regarding this little quest of mine. I have successfully implemented the sinch sdk into my system and its calling perfectly fine. Now I'd like to send DTMF tones if the call is answered by a PABX. JavaScript questions and answers, JavaScript questions pdf, JavaScript question bank, JavaScript questions and answers pdf, mcq on JavaScript pdf, JavaScript questions and solutions, JavaScript mcq Test , Interview JavaScript questions, JavaScript Questions for Interview, JavaScript MCQ (Multiple Choice Questions)

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Hi on the call object there is a sendDTMF method DTMF key must be in [0-9, #, *, A-D]. Ios: [call sendDTMF:@"1"]; https://download.sinch.com/docs/iOS/latest/reference/html/Protocols/SINCall.html#//api/name/sendDTMF: Android call.sendDTMF("1");

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