Advise on usage

Lodewijk Duymaer van Twist lodewijk at
Mon Jun 4 05:55:40 UTC 2018

Hello Aleksander, 

Thank you! And what would be the best way to do the missing features? I understand that MM only supports AT command's in debug mode. 

Kind regards, 


Van: "Aleksander Morgado" <aleksander at> 
Aan: "Lodewijk Duymaer van Twist" <lodewijk at> 
Cc: "libqmi-devel" <libqmi-devel at> 
Verzonden: Zaterdag 2 juni 2018 18:08:09 
Onderwerp: Re: Advise on usage 


> We are developing a new generation or our alarm dialer product, for which 
> we used to use AT commands in the old days, but now we have luxury of 
> developing a platform on which we can use libqmi. We are kind of 
> overwhelmed by libqmi and all its capabilities. We have the need for the 
> following capabilities and: 
> - SIM card unlocking/changing pin code/puk code, etc. 
> - Starting and answering voice calls (we will be using TTS for 
> communication). 
> - DTMF 
> - Network connectivity internet or private APN. 
> - SMS messaging 
> What is best practice for the above features libqmi, ModemManager, at 
> commands? or a combination. 

I'd suggest using ModemManager, although some of the features you list 
may not be fully implemented using libqmi yet (e.g. Voice support is 
only supported via AT commands right now in MM). I would definitely 
just try MM on the device you're targeting to use, and then check 
which are the missing features, if any. 

> Also would you recommend a book or site for further reading? 

I used to blog about libqmi and ModemManager features in 


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