Hello,
I suffered too much on making iE recognize the call status. Only busy tone could be detected properely and quickly. Other tones could be detected…but very-very hard and very late (5-6 seconds).. Also there is another problem: The caller won’t hear any sound before the billing goes…the speach (as well as the ring tones) are heard only after the billing is started…
So you can’t rely on its built-in answer supervision…that would be just a waste of time..
Regards,
Tigran Kocharyan