Android Question PLACING VOICE OVER B4A PHONE CALLS

[josetecvino]

i need to make phone calls from a bluetooth device which send the voice from a TTS file.
I don't know how to do it using B4A.
Reading the forum it seems it is not possible but when i use my car , my bluetooth hands free system place phone calls with voice using my Android mobile
phone.
Then it is posible to do IT

 

[Erel]

It is not possible to "inject" an audio stream to a phone call.