Depends on direction, class, config, coding and technology:
http://en.wikipedia.org/wiki/GPRS

Signature
Chris Tacke - Embedded MVP
OpenNETCF Consulting
Managed Code in the Embedded World
www.opennetcf.com
--
>I understand that the answer to this question may depend on variables such
>as signal strength etc, but I will ask anyway :-)
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>
> Pete