PPP over Cellular

[GamerDFWM]

Since some companies charge insane amounts for GRPS and not minutes, is it possible to work around this by using dialup PPP over the cellular (not GRPS) modem in the connections area?

[JUICEe]

YES, BUT I THINK DEPENDING ON WHICH SERVICE U USE; THEY WILL STILL CHARGE U FOR THE AMOUNTS OF DATA TRAVELING BAK N FORTH

[Codenix]

The various carriers in Australia (except Virgin, which don't support any data at all yet) all charge data calls over GSM as standard peak/off peak calls, just like voice.

So to answer your question, here in Oz I'll often switch back to Analogue CSD line type and dial into my office via our RAS server (ie. use the GSM line) if I plan to browse / download large content, because the peak call works out cheaper than would downloading the data via GPRS (albeit significantly slower!).

8)

[GamerDFWM]

Here's what I've decided to do (USA). I am keeping my AT&T GSM plan for use with voice only. Don't let them scam you into buying a data plan. T-Mobile offers an unlimited internet plan at about 50% of what AT&T and Cingular offer. Once mobileplace lets me know if they have planned for a better dual sim solution than the ghost or cutting, I will switch between sims based on my needs at the time.

[telegurus]

YES, BUT I THINK DEPENDING ON WHICH SERVICE U USE; THEY WILL STILL CHARGE U FOR THE AMOUNTS OF DATA TRAVELING BAK N FORTH
I presume otherwise, i.e. most service providers charge air time as if it were a voice call. This is the case with T-Mobile US at least. Nights and weekends are free data time - nice! 9kbps is not too bad to surf the net without graphics.

I posted detailed set-up in thread
http://forum.xda-developers.com/viewtopic.php?t=4723