Data call (aka CSD) with QtExtended

Tuan TRINH at
Sun Mar 22 04:09:28 CET 2009

Yes, my GSM carrier support both data/fax and I also did register it.

Thought we need to interact with modem directly to make data calls,
unfortunatety Qt has not much info on how to to this.
Ed, do you have any experience on using it?
On Fri, Mar 20, 2009 at 11:37 PM, Mike Montour <mail at> wrote:

> Ed Kapitein wrote:
> > I am also looking for a way to make data calls, do you know of any other
> > method of making a data call with the FR?
> > ( direct AT commands to the modem etc)[...]
> > All pointers are welcome!
> First you need to make sure that your GSM carrier supports CSD (mine
> doesn't AFAIK) and that it is activated on your account.
> In the past people have mentioned that the Calypso performs similarly to
> an "Enfora Enabler" modem and there is some web-accessible documentation
> for that. The "AT+CBST" (select bearer service type) command seems to be
> involved.
> There's probably some overlap between the CSD commands and the ones used
> for GPRS so I would also look at
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