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That app doesn't allow you to inject the tones into an in-progress call; it just plays the tone. If the phone is in speakerphone mode it might work, though wou
by kelnos 1y ago
That app doesn't allow you to inject the tones into an in-progress call; it just plays the tone. If the phone is in speakerphone mode it might work, though would probably still be unreliable. If not, then it just won't work.
- ajb 1y agoYeah, the echo canceller is going to try to make that not work, and DTMF tones are simple enough that it will likely succeed.