Data call (aka CSD) with QtExtended

Ed Kapitein ed at
Thu Mar 26 11:56:53 CET 2009

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? 
if not use ate1 to see the responses.
you can restart /usr/sbin/gsm0710muxd with the -v option and use logread
to see what is send and received from the modem.

If you use the motorola to call your FR, can you pick up the call with
the ATA command?
Do you see a "ring" message?

Good luck !

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> 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}"


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