Post- GTA02

[Andy Green]

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Somebody in the thread at some point said:
> On Fri, Mar 21, 2008 at 03:54:49AM +0100, joerg wrote:
> 
>> I think, a 400MHz CPU plus Wolfson chip can do the magic (well, diminished 
>> responsiveness while canceling echo. So what? We're in a call). ZyXEL 9600 
>> were able to cope with (transatlantic) echo.
> 
>> Though I had no close look at it yet.
> 
> If you are looking for something that will run on the CPU most of the

It would be optimal if the whole GSM side could run autonomously and the
CPU in fact unpowered / suspended during a call in the normal case (no
listening sockets on Wifi for example).

I don't know what management traffic is needed to the telephony network
during the call, hopefully it just needs service when the call
completes, or you wake the CPU anyway from motion or touchpad because
you are about to end the call from your side.

How this would fit into USB-based telephony modules I didn't figure out
yet :-) but it would definitely make a BIG increase in this "talk time"
figure if the only thing sucking real power during the call is the GSM
module itself and the audio subsystem.

- -Andy
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