Hi guys,
I think the "GPS" thing is done over location based services.
You will find more on this website:
http://www.mobilein.com/location_based_services.htm
Especially this part is important:
Quote:
Emergeny services
Hopefully not many readers of this article will have to rely on dialing 9-1-1 from a mobile phone, but if you do, it is a location based emergency service application that pinpoints your location and relays it the appropriate authorities. The FCC has mandated that by October of 2001, all wireless carriers in the United States must provide a certain degree of accuracy in pinpointing the location of mobile users who dial 9-1-1.
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Hope this helps.
bye Boheme