Getting DTMF in Android

Question

I wanted to know if there is a way to decode DTMF signals (sent from other phones) to numbers so that the number can be manipulated as needed?

For example: If I press 1234 from phone A during a call, I should be able to get the number 1234 on the Android B phone.

Answer 1

As far as I know, this is not yet supported .

You cannot listen to the sound stream of a voice call, so you cannot recognize DTMF tones yourself, even if you wanted to.

Answer 2

I think this is possible using this project.

here's the link

https://code.google.com/p/dtmf-decoder/source/checkout