[Gta04-owner] Modem crashing?

thomasg thomas at gstaedtner.net
Fri Feb 17 17:21:18 CET 2012


On Fri, Feb 17, 2012 at 17:11, Marcel Holtmann <marcel at holtmann.org> wrote:
> Hi Thomas,
>
>> >> I think Radek's approach to monitor the PCM clock - which is only active
>> >> during a (single) voice call - can address this. It may of course miss
>> >> some signalling with a second call coming in during a first one
>> >> (GSM conference calls).
>> >
>> > In fact i am now also doing CLCC polling in QtMoko. I will try to collect
>> > numbers during weekend on how long talk time we have:
>> >
>> > 1/ with CLCC polling + routing audio
>> > 2/ audio routing without CLCC
>> > 3/ without audio and CLCC polling
>> >
>> > We can then decide what to do next.
>> >
>> > Btw if you write another mail to Option it would be nice to ask them if they
>> > know how to disable 3G (if that is possible). I am quite sure the USB
>> > disconnect is because of that.
>>
>> I'm pretty sure this works the same way as in any device:
>> AT+CFUN
>> where CFUN=5 is GSM and CFUN=6 UMTS
>
> that is just specific to Ericsson MBM and ST-Ericsson hardware. That is
> nowhere near a standard. Time to read 27.007 ;)
>
> Option uses AT_OPSYS in their HSO based devices.
>
> Regards
>
> Marcel
>
>
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You're right, it's not standard, so it probably is wise to use OPSYS for it.
However, it does actually work on all devices I've ever seen,
including every Qualcomm based, from Huawei to Option. So at least it
does the job for quick testing :)


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