[Gta04-owner] Option AT commands

Dr. H. Nikolaus Schaller hns at goldelico.com
Sat Jan 4 10:10:53 CET 2014


Am 03.01.2014 um 10:48 schrieb Dr. H. Nikolaus Schaller:

> 
> Am 03.01.2014 um 00:55 schrieb Neil Jerram:
> 
>> Stefan Rupp <struppi at struppi.name> writes:
>> 
>>> Hi everyone,
>>> 
>>> recently, while searching for something totally different, I stumbled
>>> across the official Option AT Command documentation, directly available
>>> from Option's official download page:
>>> http://www.option.com/support/embedded-solutions/downloads
>>> 
>>> Direct link to the file is here:
>>> http://www.option.com/download?file=GTM6xx_Nyos_AT_Command_v046ext.pdf
>>> 
>>> Maybe some of us GTA04 owners might find this interesting :)
>> 
>> Thanks.  I noticed a couple of possibly interesting things.
>> 
>> AT_OLCC apparently controls unsolicited call status, and is off by
>> default on my GTA04:
>> 
>> AT_OLCC?
>> _OLCC: 0
>> 
>> I wonder if it's what's needed to avoid the call state polling that was
>> discussed here:
>> https://lists.ofono.org/pipermail/ofono/2012-March/012528.html
> 
> If it really does what we assume, then it would be a really useful and important finding!

Apparently it does what you have expected!

AT_OLCC=1
AT_OLCC=1
OK
atd08954290377;
atd08954290377;
OK

_OLCC: 1,0,2,0,0,"08954290377",129       <- first dialling the remote device (our fax machine)


_OLCC: 1,0,3,0,0,"08954290377",129      <- each time the remode device (our fax machine) rings (can be used to play another "ring" tone to the earpiece)


_OLCC: 1,0,0,0,0,"08954290377",129      <- fax did accept the call


_OLCC: 1,0,30,0,0,"08954290377",129    <- call at the fax machine did terminate


This is exactly what we need to remove call status polling:

http://www.hughes.com/AT_Command_Reference.html#AT_plusCLCC

Two questions remains to me:
* how are multiple calls handled
* what is the additional 129 value (not described for the hughes modem)

BR,
Nikolaus




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