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NG-911


Article

A better toolbox

A better toolbox

The systems and equipment used by emergency telecommunicators have come a long way — but there's plenty of room for improvement
  • Written by Urgent Communications Administrator
  • 1st November 2010

The paper maps are gone. So are the Rolodexes, typed lists, CRT monitors and push-button phones.

The workstations where many public-safety call takers and dispatchers sit today are less cluttered, more capable and easier to use than their forerunners of 10 or 20 years ago. But, of course, there’s still room for improvement, say emergency telecommunications professionals. And those systems at public-safety answering points (PSAPs) will need to evolve even further when next-generation 911 (NG-911) technology becomes a reality.

For Wanda McCarley, operations group manager for the Tarrant County (Texas) 911 District, one of the best aspects of today’s PSAP workstations is the computer-based call-taking system. For one thing, she said, it provides more information than older systems did, such as whether a caller is using a Phase II wireless phone with precise location data, or a more-difficult-to-locate Phase I phone.

Also, modern telephony systems make it much easier to transfer calls, she said. “The numbers are all programmed for their surrounding agencies, so if the call needs to be transferred, they can do that with one button.”

Rick Jones, operations issues director at the National Emergency Number Association (NENA), likes that vendors are starting to offer computer-aided dispatching (CAD) products that serve multiple PSAPs at the same time. This would allow eight rural counties, for example, to buy and share one system. “That brings in some economies of scale,” he said. Throughout the 1980s and ’90s, CAD systems evolved to support PSAPs that serve numerous law-enforcement, fire and medical agencies, each with their own particular requirements, Jones said. “The next leap was being able to do the same thing across a broader geographic area.”

In addition, call-takers and dispatchers today have many more options for viewing and sharing information. Although a crowd of monitors still is a fact of life, interfaces help some call centers cut the clutter.

“If you think smart, you can use split screens and use one monitor to present two images,” said Steve Souder, director of the Department of Public Safety Communications in Fairfax County, Va.

So, for example, while the monitor linked to a call-taking system in the Fairfax center displays a caller’s location on a map, the other half of the screen offers an aerial photo of the same spot.
Workstation flexibility also extends beyond the stations themselves. In the multi-jurisdictional Fairfax County center, telecommunicators can push any text, map, photograph or other content displayed on a monitor to the 60-foot video wall operated by the Virginia Department of Transportation (VDOT). And 911 personnel can access video streams from VDOT’s wall at their workstations, giving them a close-up view of traffic incidents.

Logging and recording systems linked to call-taking systems also are becoming more sophisticated. “Every time the phone is answered off the work station, that call gets recorded, along with all the statistics about the call,” said Michael Grossie, executive director of the Lubbock (Texas) Emergency Communications District. Automatically capturing data regarding the call length, where calls were transferred and other factors helps the center manage staffing, he said. Users also can easily locate and listen to recorded calls.

Although the systems on a telecommunicator’s console are more integrated — or, at least, interfaced — some PSAP professionals would like to go further by eliminating redundant hardware.

“We’re working with a lot of separate technologies, although they are integrated and can talk on the back side,” said James Lucci, team supervisor at the North East King County Regional Public Safety Communication Agency (NORCOM) in Bellevue, Wash. Maintaining those technologies, such as the seven monitors on a telecommunicator’s console, gets expensive, he said. As the cost of larger monitors comes down, NORCOM plans to start displaying the same information on fewer screens.

McCarley agrees that telecommunications systems need to become more integrated. With as many as eight flat-screen monitors attached to different systems at the consoles in the Tarrant County 911 District, PSAP personnel face an ergonomic risk. “It causes dispatchers neck problems looking up, and arm problems if they’re using touch screens,” she said. Some personnel in the district also contend with multiple keyboards and computer mice.

“It would be better if the integration were better, so that your CAD system or your 911 call-taking system could put all of that information into a limited number of screens, and you could display that information in an orderly manner,” McCarley said.

Besides reducing the clutter of displays and peripheral devices, combining call-taking, CAD, logging and recording, and other functions into a single system makes two kinds of economic sense, Jones said. For one thing, it’s bound to reduce maintenance costs. “I don’t need people trained specifically for five separate [systems],” he said. “I can have a really good person do the whole thing.”

Also, an integrated system would be simpler to fund. PSAPs often pay for different technology tools out of different budgets, Jones said. “If you put that all together, and buy one thing, you can share funding sources.”

In Lubbock, Grossie’s biggest complaint about current technology involves session initiation protocol (SIP), the signaling protocol that controls voice-over-IP (VoIP) communications.

“Each vendor has their own little flavor or version of SIP, and that causes problems, because one system can’t talk to the other,” Grossie said. “In Lubbock, I can’t send a voice-over-IP call to the system in Amarillo, 110 miles away, because they’re using equipment from a different manufacturer.” Vendors are working to eliminate this problem, but they have yet to succeed, he said.

The advent of NG 911 should make it easier to pass calls from Lubbock to Amarillo. But PSAPs and their vendors still face many other challenges as they prepare for the transition to the new technology.

Some of the most crucial issues concern the ability of PSAP systems to manage and present the vast volumes of data, text, photographs, video and audio that NG 911 will generate.

“Next gen has the possibility of just inundating our call-takers with information,” said David Jones, a vice president and principal at the public-safety consultancy Mission Critical Partners in Southlake, Texas. “Some of it may be useful, some of it not so much.”

PSAP operators must be able to decide at the local level which information they want to present to employees, said Jones, who is a former NENA president. For example, in a large city, where first responders can reach the scene of an accident quickly, call-takers won’t need all of the details that a car’s automatic crash notification (ACN) system can send. That excessive information might be more of a distraction than a help, Jones said.

But in a rural area, where it might take 30 minutes or more to get units to the scene of a car crash, the needs would be far different. “That information that I might get from ACN would be vital in determining how I would respond,” Jones said.

According to McCarley, NG-911 systems should be configurable enough to present the volume and type of information that employees in a particular PSAP need to perform effectively.

“You want them to have information they can use,” said McCarley. “And then if you have additional information, you’d like to put it someplace, and let them go get it if they need it, instead of throwing it at them all at once.”

Besides determining what information to present, members of the PSAP community are deciding on the formats that NG-911 systems will use to display that information. Currently, NENA and the Association of Public-Safety Communications Officials (APCO) are working on a document to define requirements for the human machine interface (HMI) and displays used in NG-911 systems.

The goal is to create a standard look and feel for incoming information. “For instance, there are all kinds of ways to do text messaging,” said NENA director Jones. “They all look different. We have a requirement that they look the same when they come in to the call-taker.” Videos, too, will adhere to one format on PSAP screens, no matter the source. Both NENA and APCO hope that these standards will keep NG-911 from imposing new burdens on call-center employees, he said.

The industry’s experience in making the transition from paper-based dispatching to CAD systems demonstrated the importance of carefully managing the implementation of new technology, Jones said. But if the emergency telecommunications industry gets NG 911 right, everyone will win.

“The public is going to get better service,” Jones said. “And the first responders going to the scene are going to get … things to help them do what they do, and to protect them.

Tags: PSAP APCO NENA NG-911 Public Safety Article

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