[Gta04-owner] USSD support
andreas at kemnade.info
Thu Jan 19 20:42:04 CET 2017
On Thu, 19 Jan 2017 19:04:01 +0100
"H. Nikolaus Schaller" <hns at goldelico.com> wrote:
> > Am 19.01.2017 um 18:49 schrieb Andreas Kemnade
> > <andreas at kemnade.info>:
> > Hi,
> > I want to have my scripts for getting my prepaid balance working
> > again. I used to just dial *100#
> > Replicant 4 does not display anything.
> Maybe it is not implemented there. I don't know.
> I was curious and found some answer which I hope is correct:
> The key point seems to be that dialing any string with # or * does
> not trigger ATD and manage a phone call but does
Well, that is something I am already doing and nothing new to me. That
is what Qtmoko also does. There is often mentioned a ,15 at the end
of the command.
But that seems only to be half the truth. The intersting question is
what to do if the response is:
0: go back 1: display info A, 2: display info B, 3: do C,...
> and process and display the response. The quotation marks seem to be
According to that text the answer is sent using
AT+CUSD=1,"X" where X is the one-digit menu number.
So the user types X and the phone has to send it using AT+CUSD instead
of ATD. So the phone has to enter a special state letting the user
navigate through the menu.
I do not know what lets the phone enter that special state and what does
end the special state.
At least Qtmoko's behaviour seems to be wrong. Just having a message to
acknowledge and no keypad when such a menu appears.
I have not checked shr behaviour yet.
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