Archived from groups: alt.cellular.cingular (
More info?)
[POSTED TO alt.cellular.cingular - REPLY ON USENET PLEASE]
In <ef718c89.0411172128.54ddb1b9@posting.google.com> on 17 Nov 2004 21:28:40
-0800, bret.schuhmacher@aspect.com (Bret Schuhmacher) wrote:
>What technology does Cingular use and have they released a developer's
>kit for it? I figured they'd have a java API released (like all the
>other vendors), but I cannot find one. There's NO talk on the
>Cingular developer's website - I asked there first :-(.
<http://www.911dispatch.com/911_file/tech_choices.html>
Phase II Wireless E911 Technology Choices
As of May 2003, here are the methods being used by the largest wireless
carriers to provide Phase II service:
Carrier Network
Technology Phase II Technology Type
T-Mobile GSM E-OTD* network
Nextel iDEN A-GPS handset
Cingular TDMA-GSM E-OTD* network
AT&T Wireless TDMA-GSM E-OTD* network
Verizon CDMA A-GPS/AFLT handset
Sprint CDMA A-GPS/AFLT handset
Both Cingular and AT&T Wireless are phasing out their TDMA networks.
* In Oct. 2002 Cingular and AT&T Wireless notified the FCC that it was
halting E-OTD development because they were uncertaint that
the technique could meet the accuracy requirement by the Commission's
deadline. In March 2003 T-Mobile also told the FCC
it would stop deployment of E-OTD gear. The carriers said they would test
U-TDOA technology to provide Phase II service.
<http://www.phonescoop.com/news/item.php?n=404>
Cingular Switches to U-TDOA for E-911 Positioning
Date Posted: Dec 17, 2002, 12:25 AM Source: Wireless Week
Cingular has decided to switch technologies for meeting the FCC's
E-911 mandate for locating 911 callers. Cingular has told the FCC
that after completing successful field trials involving
TruePosition's network-based U-TDOA technology, it was moving away
from E-OTD, which so far has failed accuracy tests, resulting in
delays and financial penalties. Cingular in October suspended
shipments of E-OTD gear and began testing TruePosition's solution.
<http://www.trueposition.com/news_03.10.03_cingulargsm.php>
TruePosition and Cingular Sign National Multi-Year Agreement For GSM
Location Solution
TruePosition's U-TDOA Location Solution Provides High Accuracy For
Anyphone, Anywhere
KING OF PRUSSIA, Pa. and ATLANTA, Ga., March 10, 2003
--
Best regards, HELP FOR CINGULAR GSM & SONY ERICSSON PHONES:
John Navas <http://navasgrp.home.att.net/#Cingular>
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