Data call (aka CSD) with QtExtended
openmoko.vn at gmail.com
Sun Mar 22 16:37:58 CET 2009
Woop, I have the same results with +CBST. But still can not make data call
although AT+CEER show "no error" ?
Btw, your data call is to a land-line modem ? My target is a data call
between 2 FreeRunners or from FR to other mobile, I heard some where
mobile-2-mobile data call is quite diffirent than to land-line modem. Is it
PPP is only need after modem completes hand-shaking with far end modem.
Unfortunately, I still can not have hand-shaking done :-((
On Sun, Mar 22, 2009 at 8:10 PM, Ed Kapitein <ed at kapitein.org> wrote:
> Hi Tuan :-)
> well, it seems like you are almost there.
> you can check if the gsm network has data capabilities with the
> following command:
> +CBST: (0-7,12,14,65,66,68,70,71,75),(0),(0-3)
> i am able to make a call after that with:
> ATD xxxxxxxxxx
> the username/password i need is indeed my username/password for my
> dial-up ISP, but it is only needed *after* a successful call to my ISP.
> after a successful login i should be able to start a ppp link with my ISP.
> If i make a datacall to my home phone, i can hear the FR trying to
> initiated a data connection, kind of like a calling fax machine.
> So you could test that.
> A good source of information on ppp could be
> I use no PIN, but i don't think that matters much.
> Good luck, i will try to make a full internet connection once i have my
> username password and let you know the results.
> Kind regards,
> Tuan TRINH wrote:
> > Hi Ed,
> > My name is Tuan :-)
> > Thanks for your reply, but I still confuse on username/password
> > portion, what does it for? For connecting to operator's modem ?
> > I don't have any idea on how data calls are established end-to-end.
> > Where does ppp play its role? Do you have any doc or URL regarding it ?
> > I did the following commands but nothing happend:
> > ATE1
> > AT+CFUN=1
> > AT+CPIN="yyyy"
> > AT+COPS
> > AT+CBST=0,0,1
> > AT+CR=1
> > ATDxxxxxxxxxx
> > where yyyy is my PIN and xxxxxxxxxxx is another phone number. After
> > last command I also repeat some AT+CEER to check but it reports "no
> > error" as:
> > AT+CEER
> > +CEER: 0,1,1,255,no error
> > With the first 4 ATs, I can make a voice call successfully.
> > Cordially,
> > Tuan
> > On Sun, Mar 22, 2009 at 6:23 PM, Ed Kapitein <ed at kapitein.org
> > <mailto:ed at kapitein.org>> wrote:
> > Tuan TRINH wrote:
> > > Yes, my GSM carrier support both data/fax and I also did
> > register it.
> Openmoko community mailing list
> community at lists.openmoko.org
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