Vonage Selects TCS For VoIP E911 Service
David Lesher
wb8foz at nrk.com
Wed Jul 20 14:02:57 UTC 2005
>
>
> I think this can work. Put a battery backup in the ATA, to power the
> GPS and real time clock. The ATA will maintain the internet-routable
> address it's using (not necessarily it's own IP address) indefinitely.
> If the ATA determines it's routable address (or /23 or whatever subnet)
> has changed since being disconnected, it prompts (via voice menu on
> connected phones) that it needs to be taken outside and re-GPS'ed.
> Flashing light on the box confirms when GPS has synced it's location.
> Take it back inside, plug it in, and all is ok again. Or something
> along those lines....
So will you block all useage until you do so?
Any voluntary compliance solution will fail the CALEA aspect.
And I recall reading somewhere in the trade press that the reason
some cellular carriers went to GPS-based solutions was they could
not meet the FBI specs for accuracy with tower-timing solutions.
And needless to say, I can think of many places both cellular and
VOIP cam be used where GPS will be worthless.
One other point: both the FBI and EMS want to know which office
on which floor of the Empire State Building you are in when you
call, not just a 2-D circle of X radius.
--
A host is a host from coast to coast.................wb8foz at nrk.com
& no one will talk to a host that's close........[v].(301) 56-LINUX
Unless the host (that isn't close).........................pob 1433
is busy, hung or dead....................................20915-1433
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