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Posted by Christopher on October 1, 2005, 2:39 am
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Great insight, thanks for your thoughts?
Chris
> Hello Christopher,
>
> On Thu, 29 Sep 2005 03:03:11 UTC, "Christopher"
>
>> I can see the value of VoIP providers proving e911 for TA based services,
>> but how do you do e911 if you are using your Softphone via a Wi-Fi
>> connection in a public area like a park? Unlike GPS and Cellular
>> triangulation, these capabilities do not exist in the wi-fi world....,
>> interested in the group's thoughts?
>> Regards
>> RC
>
> It would be helpful if there was a reasonably universal Location
> Protocol that IP Devices could use to locate themselves. I've heard
> of some implementations, but none are widespread. Your VoIP Phone
> could ask for the nearest location information (in E-911 coordinates)
> from the Wi-Fi network. The location might not be very specific,
> but hopefully it would at least be close to the public area you were
> in.
>
> Such Location Discovery Mechanisms would be helpful in many areas.
> Imagine your home PC being able to quickly discover your City and
> your browser helpfully locate certain information you are interested
> in. Cell phones are likely to have some of this soon, but it may
> be more like the cell towers feeding you the data and only that data
> that was paid to be broadcast. A similar advertisement system could
> help (or bother) motorists that have mapping products in their
> vehicles.
>
> As for your Softphone, perhaps it has other location information
> that could help you further pinpoint your location. For instance,
> a device that could carry on multiple data conversations, such as
> a BlackBerry (phone plus PDA plus internet) could recognize that
> you just called an emergency number (911) and start a location
> discovery process on its own. In this case the BlackBerry is likely
> using a cell tower. However, its data terminal could ask you for
> further details about your location. Consider a Wi-Fi area that
> covers a few square blocks of a city. This extra process of asking
> the user to further clarify their location could be selecting
> two dimensions between three blocks. That data could be sent to
> the E-911 center via a subchannel after the conversation has
> started. We don't have that capability today with E-911, but
> perhaps the OnStar system has something like it. Cell phones
> can also be tracked to some degree. The Wi-Fi network of today
> supports connections, just as cell towers used to. Mandates
> required the development of location discovery mechanisms
> for the cell towers and back into the E-911 system. Perhaps
> at some point this will be added to Wi-Fi as well.
>
> David
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