pauldelanotte wrote:
> have an idea for cheapest world wide roaming data connection (to
> connect your Laptop to internet via gsm)
>
> a) I have a SIM card registered in the UK on which I do not pay
> incoming calls wherever I am
>
> b) I have a VoIP provider which can call a UK sim for 2 cents a minute
> (it can connect my mobile with a fix line for the same price)
>
> Therefore I can call world wide in roaming (being in almost any
> country) for 2 cents a minute from my mobile instead of 1 Euro of
> standard roaming price.
>
> Now I would like to connect to the internet by dial-up.
> a) I got a fix line number to dial up. eg +4820XXXXXX (internet
> provider)
> b) I got my mobile connected by bluetooth to my laptop (as a gsm modem)
> c) I set my Windows XP for internet callback service - so it answers
> the call when it is being called
> d) now by sending a text Ito my voip provider to connect two numbers -
> to trigger a connection between my mobile and the internet dialup
> number +4820xxxx (the service like www.jajah.com or like
> www.voipcheap.com)
>
> I am hoping that:
> 1) windows will answer the call on the mobile
> 2) the call will be connected to the dialup provider on +4820xxxx ( all
> this happens via IP but my GSM and my laptop thinks it is a normal
> call)
> 3) I am able to surf on the internet wherever I am in the world for 2
> cents a minute!!!
>
> So this is the theory. In practice my mobile connected via bluetooth
> indeed receives the call but after a second it hangs up.
> Does anybody has any experience on connecting to the internet via
> mobile but on the call back?
> The fact that it goes over ip is transparent for me it makes only the
> connection very cheap.
>
> cheers
> Paul
>
The SIM card doesn't send data - you have an ordinary phone call at GSM
speed.

Interesting to read this though, as I was thinking about callback like
this myself, and read some stuff in Windows help the other day. I think
you ought to connect two landlines together, with the PC modem plugged
into one, which means you might use a different mobile to trigger the
call (which you already have of course)