public safety

April 30, 2007

NY Fire Dept. test Northrop Grumman's wireless system at 7 World Trade Center

San Jose Mercury News - NYFD drill at ground zero tests L.A. corp.'s wireless technology

This drill happened yesterday at the WTC site through NYC's Dept. of Information Technology & Telecommunications. "Officials tested sending surveillance video from the building's 50th floor to the network operations center and from there to the fire department's operations center in Brooklyn, allowing them to monitor the scene remotely...."

Northrop Grumman, a global defense and technology company with more than 120,000 employees, will equip, build and maintain the system for five years and provide technical support to city technology officials.

MobileShield might be the product they're testing.

They were also testing the ability to send blueprints electronically before the firefighters are dispatched.

This is part of the $500 million citywide data network including the formation of an elite group of firefighters, which are expected to be operational in spring 2008.

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April 20, 2007

Update: students' cost for an SMS alert system

There was a commenter who asked a question about whether a student who had to finance the purchase of a cell phone and a contract through student loans would also have to pay for the SMS alert system.

I talked again with Rodger Desai of Rave Wireless, and he said the answer is no. In fact, a carrier which has a contract with a campus to provide adequate coverage capacity, frequently, will give the students a discount for the phone and the service.

eWeek Mobile & Wireless: SMS campus alerting systems

Text Messaging Booms at U.S. Colleges

There have been several reports about this subject, so I'll try to summarize the new information that this article contains.

While some systems are opt-in only, some universities are requiring students to provide their cell phone numbers so that they may be contacted on an emergency basis.

"[T]he Clery Act of 1990 mandates the reporting of crimes on campuses and the timely notification of students." I don't think that this necessarily mandates an SMS system, but shows the need for colleges and universities to consider updating their emergency strategies which should also include business continuity and disaster recovery plans.

The Clery Act was prompted by the killing of Jeanne Clery at Lehigh Unversity, and her parents has established the non-profit Security on Campus organization to promote understanding of the problem of campus security.


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April 19, 2007

Virgina Tech: cell voice and data surge overwhelm coverage capacity

"Wireless Problems Played Part in Virginia Tech Chaos," is an article posted on eWeek's Mobile and Wireless Web site:

According to carriers serving the Virginia Tech campus, the massive increase in wireless call volume during the April 16 shooting tragedy left many students unable to place a voice call or send text messages.

Colt The Verizon Wireless representative, John Johnson, said that traffic levels started to increase on the campus just after 9 am, and continued to climb to 4x the normal by about noon, and remained at this level until shortly after 2 pm.

Johnson acknowledged that for awhile during the heaviest call volumes on April 16, some calls did not go through. "We did see some call blocking," Johnson said. "We did also see some heavy text message traffic. A lot of folks have learned that it's much easier to get a text message through at that time than to get a voice call through."

T-Mobile reported a 10x increase in traffic at the peak period of use. They did not say if their customers were unable to access their network covering the campus, according to eWeek.

The Cingular/AT&T spokesperson reported heavy call volumes, but no call blocking. He also said, "We had no problems with text messaging." And he said that this is a "great alternative in these situations."

Sprint/Nextel also reported higher than normal call volumes, but did not comment on whether its calls were blocked. Sprint does not provide service to the area, however the Nextel customers are supported through the iDEN network, according to their spokesperson.

In addition to the lack of information on call blocking, there seems to be some discrepancy in this article as to what degree text messaging was affected. I was hoping to see a breakdown in cell vs data traffic that would help us understand if SMS is a reliable option during times of crisis. This could serve as an important case study, but I think with multiple carriers involved it would be hard to get a full set of data. An option would be for the university to contract with a carrier (it's unlikely that a carrier would work with a competitor, AFAIK) to ensure coverage capacity. Supposedly, on weekends and during sporting events such as football games, the demands do increase greatly, so this would not simply be meant to be there for emergencies.

But, this would mean that the students would have to subscribe to the single carrier supporting the campus with ensured coverage. Even though most students are making a 4-yr commitment to their school, it would still be major undertaking for a student body supported by four carriers to change contracts as necessary and support only one carrier.

COWs (cell on wheels) and COLTs (cell on light truck [shown in photo]), provided by Cingular/AT&T and Verizon Wireless, respectively, were sent to the Virginia Tech campus to help with handling the coverage capacity--after the fact.

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Radio Data System (RDS): another wireless alert system

Radio_data_system_logoFrom the Wikipedia entry on RDS:

Radio Data System, or RDS, is a standard from the European Broadcasting Union for sending small amounts of digital information using conventional FM radio broadcasts. The RDS system standardises several types of information transmitted, including time, track/artist info and station identification. RDS has been standard in Europe since the early 1990s, but less so in North America

I was contacted by a representative of DataFM, a company that provides an alert system based on RDS technology using FM subcarriers that can transmit point to multipoint with addressable geographic or demographic selectivity. The client must use a special FM radio in which a custom chip is installed to receive the FM data.

Antigua2 The advantage, as explained to me, is that the 7,000 FM radio stations mostly have backup generators that will maintain the signal in the event of a loss of power due to a catastrophe such as a tornado or tsunami. According to their Web site, "[t]he Carribbean Island nation, Antigua, has selected DataFM Multipoint Messaging Technology for its Tsunami, Hurricane and Mass Notification System."

I'm told the system is operational in all of Georgia’s hospitals as well as the public school system in counties in and around Atlanta.


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April 18, 2007

Interview with Rodger Desai, President & CEO of Rave Wireless

Rave_logo This Q&A paraphrases a discussion I had by phone with Rodger Desai of Rave Wireless earlier this evening about SMS alert and communications systems for academic campuses.

With your SMS alert system what happens when the cell service is overwhelmed?

We leverage people's existing phones and it depends upon arrangement with carriers on how to prioritize messages. We don't use an e-mail gateway like some people use. We use a short code, and there is redundancy on the binds so that we go across several aggregators. The coverage on campuses is somewhat incidental.

The more enhanced Rave product has coverage capacity guarantees. The carrier builds out their coverage capacity for campuses. That ensures coverage everywhere on campus. With this, you get some additional applications such as with the Rave Guardian service. One is a panic button which can transmit their GPS coordinates anywhere around the country, as well as their picture, their profile, as well as their family information.

The text messaging thing is very basic. Most of our effort is in the larger solution. Most campuses need to build a relationship with a carrier since they are moving away from landlines, especially with a mobile student body. We provide a platform and a set of applications for GPS and a contractual relationship with a carrier like Sprint or Verizon. They will actually build the needed coverage capacity and will basically sign a service level agreement.

At Park University, Rave has partnered with Sprint. In this case, Sprint will guarantee that Rave Wireless' text alerts will have priority.

What does it take to maintain this system in terms of adding new student's phone numbers or changing numbers for those students who switch carriers?

In the case of broadcast alerts, we collect the cell phone numbers from a sort of social networking site. That's worked out pretty well.

In the case where the school does a complete Rave solution, they're actually assigned numbers and the students can port their own numbers. For the Univ. of Maryland, 75% of the incoming class will have a phone from us and will have all the software preloaded and half of those students port their existing cell phone numbers over.

At the University of San Francisco it's reported that 5,000 out of 45,000 students have signed up for their alert system. Is there a problem getting students to register? Is there some minimum number needed to ensure that the alert system is effective?

It really hasn't been an issue, the important thing is that you build trust. Rave won't be around if we abused those numbers.

There are companies that are doing silly things such as sending you coupons. On Rave, there's nothing that a student wouldn't get that they didn't opt in for. In addition to broadcast alerts you can get homework assignment messages. Rave's view is that advertising should make the product better. There's enough money in the cell phone business, people spend thousands of dollars in the phones and plans so Rave doesn't have any advertising.

What about the students who can't afford cell phones?

Over 90% of students come in with a phone. Everything that Rave does is billed to the bursar account of the student, so it can be subsidized with financial aid. We never had a student who couldn't afford it who didn't get one.

Is it possible for someone to spoof the system--send out false alerts?

For the broadcast alert, you have to be an administer to log in.

Are there any case studies where such a system was effective in saving a student?

We've been doing this the longest, for 2.5 years. Montclair State which is the second largest university in New Jersey, has had this up and running for 2 years, and they haven't had a major issue. They've have had school closings due to power outage issues and floods, so classes got canceled. In terms of broadcast messages, they've probably sent 10-15 campus-wide, in terms of individual messages, that probably happens every day. A class gets canceled or a homework assignment gets changed.

Would an administrator be reluctant to broadcast an alert in fear that a panic might ensure?

They do make a decision in what they want to do, it's just that they don't have a lot of tools to disseminate the information, so they'll rely on e-mail which much students don't check very often. It's really not any change in the way that they do things. Our notion is the more information that you can give a community, the better the decisions that they'll make. With the VTech incident, there were students who were still hiding at 2 pm, some of whom had health issues, and didn't know it was over. There were people walking toward the second shooting not realizing what was going on. Yesterday, a lot of our schools tested their systems, and the overwhelming response from the students was that we have to have something right in our hands.

What if the perpetrator is a student, and therefore also notified? Is this the wrong person to receive an alert?

It may make the perpetrator think they're on to me, I'd better run.

This is only step one, you can actually send a poll out saying "Are you OK?" with Rave Guardian. At the Univ. of Vermont, a woman went to a party on Friday night, didn't show up for her parents' Saturday night dinner. With Guardian you can transmit GPS data from the cell phone every 3 minutes, if the panic button is used or the timer is not deactivated after a certain time. These tools require a commitment for both sides, one from the university and one from the students.

Who is liable if a student is in trouble and the system fails?

The liability really falls more on the carriers more than us, but that's why Rave put a lot of time and money into redundancy. The places where it typically fails is in the SMS aggregators, because they're all kind of small companies, and in coverage. And, we've solved both those issues by working with several aggregators, if one fails, we go to the next, and the second is the coverage capacity provided by the carrier. We get the coverage built out for free on campus. Any other points of failure are just the carrier being down, and that really doesn't happen. These points of failure are where we put most of our capital.

Most of the towers are designed so that they can't handle if everyone is calling at the same time. We get capacity level agreements, so that everyone can make phone calls at the same time.

How many SMS messages can you send out per minute?

Most companies will take 1/2 hour to sent out 10,000 messages, we can send 25,000 messages in less than 5 minutes. Another factor is that you have to make sure than you can complete a sequence of messages. Such as "Avoid the North Campus," and then half an hour later send, "Head to the North Campus," any significant delay will cause mass confusion.

Can you adequately relate what's going on in 160 characters?

People who put the entire Rave system in place are not limited to text messages, you have software on the phone, you can send a video, an audio file, or a map via a Java client. You're not limited by character count by any means.

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Protecting campuses using cell phone technology

First, it's proper to acknowledge the tragedy that occurred at Virgina Tech, and to hope that those affected will find the strength to persevere. The intent of this post is to make everyone more aware of a possible solution that could save lives as well as promote communication on campuses.  Hokies forever!

Vtech

Tech looks to tap into text messaging - Roanoke.com

This online article from The Roanoke Times (Sept. '06), talks about interest in a text messaging alert system by Virginia Tech.

BLACKSBURG -- When Virginia Tech wanted to alert students to developments in a recent campus manhunt for an accused double murderer it relied on e-mail, the Web and messages sent to dorm phones. One method that was not available: sending text messages to cellphones. That could change.

University officials are considering following the lead of Penn State University and other schools that use text messaging to stay in contact with students for whom even e-mail is becoming passe.

Penn State and other academic institutions have implemented such a system provided by e2Campus of Leesburg, Virginia.

Rave Wireless based in NYC is another company that offers a similar system, but theirs also "enables college police departments to monitor the locations of students, both on and off campus." They have a blog where they describe the use of cell phones in high schools, colleges and universities for mobile communication for campus life and participatory learning.

Maybe this quote from William Gibson is apropos: "The future is already here - it is just unevenly distributed."

Another thought: I've heard reports that the cell carriers were overwhelmed on the Virginia Tech campus. I wonder how these systems will handle this increased voice and data demand, especially during an evolving emergency?

Update: This morning's WSJ online publishes "Texting When There's Trouble: state-of-the-art systems can blast mass warnings to cellphones and PCs":

The ubiquity of relatively new technologies allows electronic alerts to reach more people faster than ever before. In the aftermath of several recent disasters -- including the tsunami in South Asia, Hurricane Katrina on the Gulf Coast, and the terrorist attacks in New York, London and Madrid -- a growing number of governments, communities, school systems and universities have begun using automated electronic-alert systems that can send voice, email or text messages to residents and students, in addition to traditional broadcast emergency messages. The services mean that people no longer need to be listening to radio, watching TV, logged on to their email or near a home phone to be warned of trouble.

They do mention Virginia Tech:

At Virginia Tech, emergency communications on Monday included email but not cellphone text messages. Amid questions about whether Virginia Tech administrators should have more quickly closed campus and canceled classes, what is clear is that the university lacks any means of immediately alerting its roughly 33,000 students, faculty and staff to an emergency.

This is a blog post from Rave Wireless in reaction to the shooting and killing of a prison escapee at Virginia Tech last August, emphasizing the need for an SMS alert system:

[H]ere are a few facts to consider:

    • More than 90% of students carry mobile phones
    • Students do not check their school email as often as many adults would like to assume
    • Students often do not set up or check the voicemail provided on their dorm landlines

As the WSJ article cited above points out, these SMS alert systems are not expensive, and some pilot programs are supported by advertising. But, I don't see how an emergency system could be supported by advertising, and I hope that this wouldn't promote SMS spam, especially since users would have to pay per message depending upon their data plan.



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