RE: Vonage Selects TCS For VoIP E911 Service

["Church, Chuck" <cchurch () netcogov com>]

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....


Chuck Church
Lead Design Engineer
CCIE #8776, MCNE, MCSE
Netco Government Services - Design & Implementation Team
1210 N. Parker Rd.
Greenville, SC 29609
Home office: 864-335-9473
Cell: 703-819-3495
cchurch () netcogov com
PGP key: http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x4371A48D 


-----Original Message-----
From: owner-nanog () merit edu [mailto:owner-nanog () merit edu] On Behalf Of
Michael.Dillon () btradianz com
Sent: Wednesday, July 20, 2005 5:32 AM
To: nanog () merit edu
Subject: Re: Vonage Selects TCS For VoIP E911 Service


> > I see no other way of doing this reliably than to put some kind of 
> > GPS device into the VoIP unit.
>
> While I agree that GPS is the likely answer, I wasn't expecting the 
> ability to work inside computer rooms and basements.

It doesn't need to work in basements, etc. It only needs to keep
a record of the last location it was at when the signal faded
away. The emergency service vehicles probably can't get any closer
than that anyway.

--Michael Dillon