Huawei E220 + Data Connection Manager

Mitsutaka Amano mamano at miraclelinux.com
Wed Dec 2 15:40:02 PST 2009


Hi Denis,

On 23:51 Tue 01 Dec     , Denis Kenzior wrote:
> Hi Mitsutaka,
> 
> > > so this is the interesting part. We don't wanna use the magic *99* magic
> > > and actually use the proper GPRS AT command for connecting the context.
> >
> > Yes. I know dialup call is different in each carrier. Most data
> > connection dial number's are fixed. so I think it needs to add a new
> > context parametor 'dial number'.
> 
> That is actually not correct.  ATD*99 is a form used for backward 
> compatibility.  It is described in Section 10.2 of 3GPP 27.007.  This form is 
> frequently used as a shortcut and known by most users.  It is however not the 
> 'proper' way to establish a GPRS context.  The proper way is actually a bit 
> more involved, but offers greater flexibility.  This is what oFono will use.

Hmm. OK I'll read and study it.

> 
> >
> > > But then we have to talk PPP. That is currently work in progress as an
> > > extension to GAtChat.
> >
> > Yeah, I thought data connection needs PPP(pppd). My image of
> > implementation is as wvdial configuration.
> 
> We will not use pppd.  We're working on our own ppp solution for oFono.  This 
> is a work in progress and thus ppp devices are not yet supported.

ofono is pppd is to implement the corresponding direction, right? OK

--
Mitsutaka Amano


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