Data call (aka CSD) with QtExtended

Tuan TRINH openmoko.vn at gmail.com
Fri Mar 27 07:11:25 CET 2009


Hi Ed,
My answers are bellow.

On Thu, Mar 26, 2009 at 5:56 PM, Ed Kapitein <ed at kapitein.org> wrote:

> Hi Tuan,
>
> Strange that no connection is made to the landline modem.
> you see no response, but dou you see the at commands echoed back?

>>> When I make data calls, I see AT cmd echo back with OK --> modem acepts
cmd.

>
> if not use ate1 to see the responses.

>>> I always use ATE1 at fisrt.

>
> you can restart /usr/sbin/gsm0710muxd with the -v option and use logread
> to see what is send and received from the modem.

>>> Woop, I never see this process via ps. I use qtextend and before doing
things with socat I always shutdown qtextend so I can connect to
/dev/ttySA0. Do I need this before making data calls? Actually I can make
voice calls by ATs without this.

>
> If you use the motorola to call your FR, can you pick up the call with
> the ATA command?

>>> Can, after seeing RING, I use ATH to accept.

>
> Do you see a "ring" message?
>
>
> Good luck !
> Ed
>
>
> On Thu, 2009-03-26 at 17:38 +0700, Tuan TRINH wrote:
> > Hi Ed,
> > Just try to initiate data call but no success.
> >
> > There is a strange symptom that is: If I use the same SIM but on other
> > mobile (Motorora Z8) I can hear the far end land-line modem sound
> > respone but if I use FR to call the same modem: (1) via AT commands I
> > see no response, both sound and response modem characters so can not
> > use expect(CONNECT) with ppp (2) via GUI, it drop the call.
> >
> > My FR can do voice call normally.
> >
> > Do you have any way to debug the status of data call while using AT
> > commands? I just know +CEER but it does not give much info.
> >
> > Cordially,
> > Tuan
> > On Wed, Mar 25, 2009 at 3:33 AM, Ed Kapitein <ed at kapitein.org> wrote:
> >         Hi Tuan,
> >
> >         I was able to make a datacall to a landline modem :-)
> >
> >         So you can use your freerunner to dial in to an ISP if you
> >         like.
> >
> >         i wil paste the "proof" of my success below.
> >         Now i just need to find a way to make it less expensive...
> >
> >         Kind regards,
> >         Ed
> >
> >
> >         MODEM=$(dbus-send --system --print-reply --type=method_call
> >         --dest=org.pyneo.muxer /org/pyneo/Muxer
> >         org.freesmartphone.GSM.MUX.AllocChannel string:$identvar |
> >         grep string |
> >         awk -F '"' '{ print $2 }')
> >
> >
> >         pppd nodetach debug call inbel "${MODEM}"
> ><SNIP><
>
> >
>
>
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