Thread: Gps?????????
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Old 01-30-2009, 11:23 PM
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Re: Gps?????????

Quote:
Originally Posted by Geekcop View Post
One would think so...but I'm pretty certain PSAPS (911 centers) use cell tower location as opposed to GPS, as there are a number of phones that don't have GPS
Well, actually, they use both....

On the initial call to the 911 center, the system performs a phase 1 query, that is cell tower triangluaton.

After being connected, the phone operator can perform a phase 2 query, which will get GPS cordinates if available.
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