[Gta04-owner] Modem crashing?

Dr. H. Nikolaus Schaller hns at goldelico.com
Thu Feb 16 08:11:39 CET 2012


Am 16.02.2012 um 07:48 schrieb Marcel Holtmann:

> Hi Neil,
> 
>>> start it with "env OFONO_AT_DEBUG=1 ofonod -n -d" and you even get the
>>> AT command traces.
>> 
>> Below are two oFono logs from me.  In the first one, note that there is
>> an error with the CLCC polling:
>> 
>> ofonod[923]: App: < \r\n+CME ERROR: 100\r\n
>> ofonod[923]: We are polling CLCC and received an error
> 
> this indicates an "Unknown error". Nothing we can do. I can just only
> say it again, this Option modem is not a voice call modem. For voice
> calls it is a pretty poor choice.

Why should they implement and certify voice commands, PCM audio
interface and so on if it were a data call only modem?

> 
> We even tell you that all bets are off now ;)
> 
> ofonod[923]: App: < \r\n+CME ERROR: 100\r\n
> ofonod[923]: We are polling CLCC and received an error
> ofonod[923]: All bets are off for call management
> 
>> The consequence of that is that when I cancel the call attempt, on the
>> calling phone, oFono doesn't detect that, and so my UI still shows the
>> incoming call.
> 
> Other real voice call capable modems have an unsolicited notification
> for call state changes or at least send NO CARRIER. This modem has
> neither and is pretty bad.

I have forwarded this issue to OPTION why we don't see the NO CARRIER
as recommended by GSM07.07 appendix f and g. Let's see their answer.

Nikolaus



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