The Call - Summer 2014 - (Page 17)

T E C H T R E N DS Caller Location Accuracy in a Different Light When caller location accuracy issues come up, it's usually in regard to cell phone callers. And that's a highly important set of topics. But there's another angle - the retention of specific caller location for 9-1-1 as wireline and equivalent services get converted to wireless connectivity. And we have some catch-up to do across all services that are not truly mobile. Roger Hixson NENA Technical Issues Director In 2010, concerns developed on how femtocells and other forms of cellular range expansion devices provided caller location. NENA published an INFO document on this in early 2011. Since then, other devices to convert wireline phones to wireless connectivity have been rolled UNTIL GPS-BASED out by providers, with varied approaches to 9-1-1 caller location. Some utilize the known AND SIMILAR civic address location of the device, while LOCATION others provide only X-Y coordinates in the TECHNOLOGY same way as cellular phones working on GETS DOWN TO main cellular towers. This changes the user's THOSE RANGES, 9-1-1 location from their specific address to WE NEED TO a more general X-Y, which is less consistent SEE THAT and specific than the former civic address CIVIC ADDRESS location. These devices are marketed LOCATION CAPABILITIES DO toward residential and small business users as a way to lower costs (and for the NOT DISAPPEAR AS TECHNOLOGY carrier, a way to reduce wireline service and move it into the wireless environment). CHANGES TAKE PLACE. When these types of devices started coming out, I was concerned that another wave of specific civic address for fixed and nomadic services would become identifiable for 9-1-1 only as X-Y coordinates. Earlier this year, the FCC began to popularize concerns about accomplishing "dispatchable" addresses for 9-1-1 calling. This seemingly relates not only to accomplishing better caller location overall, but also the retention of previously accurate location, such as civic address info, as the "wireless conversion" desired by telephone carriers progresses. There are other concerns in this area, such as setting objectives for caller location accuracy for Over The Top (OTT) providers and Internetbased fixed and nomadic services, such as VoIP. Seemingly, if no other criteria are set, providers and developers tend to focus on the easiest and/ or most obvious location approach - either user-provided address or GPS-generated X-Y info. Some have employed certain crosschecking methods, others have not. There remains a clear need to utilize the most automated and specific caller location technique, which as a "dispatchable" location likely means civic address, at least until such time as X-Y location approaches equivalent accuracy. The accuracy needs vary for residential lots, and sub-lots, to small business locations, and apartment locations. This varies from the 50-foot range down to a few feet, in order to differentiate between findable caller locations in these cases. Until GPS-based and similar location technology gets down to those ranges, we need to see that civic address location capabilities do not disappear as technology changes take place. And any wireless range extension products that are placed at fixed locations, but don't provide that address to 9-1-1, need attention as well. I have established a new issue on this topic in the NENA Development Group. We need to survey the products out there now and the new products as they appear, and work to re-emphasize expectations for 9-1-1 caller location consistency across all applicable fixed and nomadic services. If not, we will actually find ourselves moving backward in fixed and nomadic 9-1-1 caller location accuracy. ● Read the digital edition at 17

Table of Contents for the Digital Edition of The Call - Summer 2014

President’s Message
From the CEO
Government Affairs
Tech Trends
NENA 2014 Conference & Expo
William M. Mcmurray, Enp Scholarship
William E. Stanton Award
Abandoned 9-1-1 Calls: A Local and National Problem
Making Performance Appraisals Meaningful and Effective
Using a Telephone to Improve the Effectiveness of the Pre-Employment Selection Process
Wireless E9-1-1 Location: A Primer on Fixes, Uncertainty, And Confidence
Index of Advertisers/

The Call - Summer 2014