qmicli: NAS set technology preference

[Marius Kotsbak]

2013/1/27 Bjørn Mork <bjorn at mork.no>:
> Thomas Schäfer <tschaefer at t-online.de> writes:
>
>> Here is a usb-snoop-logfile  while I am switching  between
>> gsm/umts/lte and autoselection.
>>
>> I am not very familiar with this tool, so may be the log is rubbish.
>
> Could be.  Lots of uninteresting usb-storage commands and no control
> transfer at all AFAICS. So no QMI there at all.
>
> The log has these AT commands, but I don't think there is anything
> interesting here either, unless the AT+SYSSEL command does something
> useful?

It seems in fact that syssel is used for selecting mode:

http://www.nuclearcat.com/mediawiki/index.php/Alcatel_3G

> AT+SYSSEL?
> AT+SYSSEL=,0,0
> AT+SYSSEL=,1,0
> AT+SYSSEL=,2,0
> AT+SYSSEL=,5,0

I see ModemManager has support for this in plugin
plugins/x22x/mm-broadband-modem-x22x.c

but it should be extended to these new modes for LTE. Maybe you could
find out what the new modes are by experimenting?

This maybe means that it is not possible to select mode by using QMI
for this modem/chipset/firmware version.

--
Marius