Hi there,

we're a group of students and trying to implement some kind of voice
cryptography over a gsm connection (without modifing any gsm related
codecs, we render pure audio which gets transmitted via gsm). Is it
possible to initiate a voice call and transmit our generated audio
signal (means bypassing the microphone as the primary audio source for
that call)?
I write this because I'm slightly worried after reading some posts on
this list/group which states that the android.telphony APIs are
private and can't be called from processes outside the the telephone
subsystem.

Kind regards,
 Jens
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