Re: Modemmanager - how to send sms? - receiving is ok

[Dan Williams <dcbw redhat com>]

On Thu, 2012-02-09 at 20:22 +0100, Marcel Holtmann wrote:
> Hi Dan,
> 
> > > >> In attached you can find the gammu log for a successfully sent sms.
> > > >>
> > > >> I had to turn off the mobile broadband with nm-applet to get gammu work. In this case modem-manager released the modem ports (ttyUSB1 and ttyUSB2) and gammu was able to use it. 
> > > >>
> > > >> If you need more info, please let me know.
> > > > 
> > > > Ok, so gammu is using PDU mode instead of text mode.  It might be that
> > > > even though the modem *says* it supports text mode, it really doesn't
> > > > and wants PDU mode.
> > > > 
> > > 
> > > If we get an error when sending the SMS in text mode, we could
> > > automatically try to send it using PDU mode; it's probably a good
> > > fallback I guess (unless it ends up sending the SMS twice :-) and should
> > > cover this case.
> > 
> > Yeah, good idea.
> 
> this is a horrible idea. You will never get text mode working properly.
> All modem firmwares are broken in a different way. Just run PDU mode and
> PDU mode only.

There's two things here; first, we're talking about the stable branch
here.  MM already defaults to PDU mode in what will become 0.6.  I don't
think it's particularly responsible to default to sending in PDU mode on
the stable branch until we're more comfortable with how all the various
hardware reacts.  Second, PDU mode CMGL support isn't required by the
standards, and there are various basic Motorola phones (admittedly older
ones we don't care too much about) that do not support PDU mode, only
text mode.  But once we're comfortable with the PDU bits then we'll
switch to PDU mode by default for 0.5.4.

Dan