-----Original Message-----
From:
Trey Pattillo <[EMAIL PROTECTED]>
To: Rajeev saraf
<[EMAIL PROTECTED]>
Date:
Friday, March 24, 2000 7:01 AM
Subject: Re: MI automatically
locating a caller on cellular networks
Hello,
Beside what I do here on the list from 8-5 I'm
the Operations and GIS manager for the Coastal Bend 9-1-1
network.
12 counties, 22 answering points, 15000 sq mi,
1400 miles off *highway* [no cities etc] with Corpus Christi, TX being the
*major* city 300,000 pop.
AND A F-A-S-T GROWING CELL PROBLEM FOR
9-1-1
We are just now upgrading to Phase 1
Wireless as mandates by the US FCC by 31 Oct 2000 which will now give us the
[911 call taker] the cell phone number, name, and *registered* address, this
will be a 10digit ph# to take care of area codes for traveling
phones.
The best location we will get is the cell
company ID,cell tower ID, and Sector [face] which I will put into MI as
provided by the estimated 600 towers that exist [no one really knows
how many there are = 26 sellers of phones in this area].
Phase II mandates the 30 Oct 2002 we will get
location within 100meters 67% of the time. HA-HA
Feds are looking to change this date or
requirements as it has not been successful yet.
Time-Difference-Of-Arrival which triangulates
position works really good here in the hinterland but sucks in the urban
canyon. GPS is capable of being put into the phone but everyone likes
their $19.95 and not having to up that to $$$$$
like the Motorola Iridium.
For now if I can say that you need to send help
in the NW area of this location [the tower] - but some of these towers are
35mile omni-directional - it is better that saying *well, we go a cell
call*..................................
----- Original Message -----
Sent: Wednesday, 22 March, 2000
22:15
Subject: MI automatically locating
a caller on cellular networks
Hi mappers:
This quewtion is not related much to MI
but more tp cellular telephony. Is it possible to identify the location
of a cellular celluar ( within say 20 to 25 metre accuracy) without the
caller having having a GPS or similar device. Or oes the cellular
switching has any information using which we can track a caller? Any
pointers would be appreciated. I wam sure people in RF planning may have
some answer to it.
--
rajeev
saraf
