[79225] in North American Network Operators' Group
Re: potpourri (Re: Clearwire May Block VoIP Competitors )
daemon@ATHENA.MIT.EDU (Michael.Dillon@radianz.com)
Fri Apr 1 07:57:01 2005
In-Reply-To: <20050401121145.GH88171@snowcrash.tpb.net>
To: nanog@merit.edu
From: Michael.Dillon@radianz.com
Date: Fri, 1 Apr 2005 13:58:39 +0100
Errors-To: owner-nanog@merit.edu
> > Why can't we have VoIP phones with built-in GPS receivers and a
>
> Because GPS doesn't work indoors.
GPS works anywhere where the satellite signals can be detected.
http://www.u-blox.com/technology/supersense.html
Obviously, signals get weaker when they have to pass through
solid materials like building walls. But people are already
working on more sensitive receivers.
But, leaving that aside, if the IP phone has a battery
inside it and if it can record previous GPS locations
and if you move the phone outside to a new location, then
it could remember the last GPS detectable location and
use that when it connects to the net again.
--Michael Dillon
P.S. assuming that phones like this come on the market,
we might see the following exchange on a web forum
somewhere...
Q. Hi. My ACME VoIP Phone is complaining that it
can't provide E-911 service. I reset it, pulled
the plug, but nothing helps.
A. Do you live in an apartment building?
Q. Yeah, why? What difference does that make?
A. Trust me. Unplug the phone, take it outside and walk
to the nearest major intersection. Cross all 4 streets
at the intersection, walking around until you get back
to where you first arrived at the intersection. Then
go home, plug in your ACME VoIP Phone and try again.
Q. WOW! It worked! I can't believe it. Now I have a new
problem. I told my friends how I fixed the phone and
now they all think I'm smoking strange substances.
A. Well, you win some, and you lose some. :-)
