gsm digital voice path

Yusuf X ys1382 at
Sat Jan 31 19:15:58 CET 2009

Hello, is it possible that the GTA03 will have a digital voice path that the
CPU can programmatically peek and poke?
>From the GTA02 EE schematics, it seems that voice would need to be converted
to analog before being given to the GSM module; the GTA03 apparently uses
the MC75i which has a digital input, but I haven't found the schematics for
the GTA03, so I don't know if the CPU can send GSM-compressed digital voice
data to the MC75i to go out the voice channel.

Thanks for any light you can shed on this subject.
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