OpenMoko/GTA01 project advice

Nelson Castillo nelsoneci at
Sat Jul 28 00:56:02 CEST 2007

On 7/27/07, Andreas Kostyrka <andreas at> wrote:
> > * Will we be able to use the GSM directly? I am new to
> > this, and I'd like to know if we can make a GSM call
> > (to other Neo) and send arbitrary data.
> Yes and no. You cannot make a Voice call and send arbitrary data. You
> can make a data call (so called CSD) and send arbitrary data. Trouble is
> that this is clearly visible to the operator as the call is signaled
> differently, so if you are trying to avoid data call costs, it's not
> possible.

We didn't know about CSD. Good. We are not trying to avoid any cost. We
just care about the latency of the GPRS link which renders it rather unusable,
at least in our country.

> As a mental model, you can think of the Neo as an Linux/ARM based PDA
> with an embedded GSM modem.




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