the short answer is that this is not possible.

The Android GSM stack is already talking to the modem through the AT comment
channel.

The AT protocol is not designed to allow several clients to talk to the
modem, the latter assumes
it only talks to a single device, and is very state-full. If you were able
to send AT commands
directly to the channel from an application, you could easily create a
disconnect between the
state of the modem and the state of the GSM stack, or even the state of your
own app.

Consider that you could randomly receive answers addressed to the stack, and
the stack
receive answers addressed to you. Both the stack and your application could
send contradicting
commands, the stack and your app could be oblivious to changes instructed by
the other party,
etc...

In other words, if you want to send specific commands to the modem from an
application, this
must be performed through the APIs provided by the telephony stack, and this
precludes
direct AT command sequences.

On Fri, Jan 16, 2009 at 6:37 PM, enri <enr...@gmail.com> wrote:

>
> Have you found any info on this, I'm looking to do essentially the
> same thing
>
> On Jan 3, 9:53 pm, barqw <barqw1...@163.com> wrote:
> > such as ATH.THANKS
>
> >
>

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