TELECOM Digest OnLine - Sorted: Re: E-911 Making Headway in VOIP

Re: E-911 Making Headway in VOIP

Tim@Backhome.org
Sun, 31 Jul 2005 00:03:41 -0700

Wayne Rash wrote:

> Things change when you're not connected to the phone company's
> lines. Cell phone users, for example, are connected to their wireless
> provider. Until recently, the best the wireless company could do was
> to have a general idea of the area of the caller, accurate perhaps to
> several square miles. Now, with more accurate location being mandated,
> phones can be located using other means, including GPS (Global
> Positioning System) receivers embedded in many phones.

GPS works only outdoors in a relatively open area. It never works
indoors except perhaps when right next to a very large window with
plain glass.

This is the problem with technology that is not well understood by
those who propose using it for solutions under less than robust
circumstances.

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