AW: text mode SMS

Ralf Glaser glaser at
Wed Nov 10 11:48:47 UTC 2021

No, that's not the problem, if our gateway is also used for receiving SMS we can easily do the conversion in software, the problem is that there are historical devices (e.g. GSM modems) in use that cannot be replaced.


Von: Aleksander Morgado <aleksander at>
Gesendet: Mittwoch, 10. November 2021 11:22
An: Ralf Glaser <glaser at>
Cc: modemmanager-devel at <modemmanager-devel at>
Betreff: Re: text mode SMS

Hey Ralf,

> the issue is not the SMS representation during transport but the representation for the recipient. Our business is M2M communication and we see older systems that require text mode SMS. As our gateway is not meant to support a variety of use-cases disabling PDU mode SMS in general is not really an option.
> I expect we will just send the SMS by AT commands directly in this case.

But then the issue is not when sending the SMS, but when reading the
SMS messages via AT commands, right? i.e. you would need to force
reading the SMS in text mode instead of PDU mode.

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