Value of Video Verification

The Value of Video Verification

Alarm systems have been a part of security since the beginning. We all know that when an alarm goes off, police are called to respond, but how many of those alarms are false? To just one person or business it seems reasonable for police to respond to even the false alarms, but multiply that by hundreds and thousands of businesses in each city and imagine all the false alarms police are required to respond to each day. Unfortunately, police cannot respond to every alarm call within a fair amount of time. Staffing, policies, and priorities often conflict with these calls. With no way of knowing whether the alarm is real or fake, police have to make a best effort, which sometimes results in the real crimes remaining unsolved.

Today systems are being designed to allow video verification of alarms. This means that when an alarm is tripped a monitoring company is alerted and begins remote viewing the facility through installed CCTV security cameras. The monitoring company can then verify if a crime is occurring. Police departments respond faster to a crime in progress rather than an unknown situation. What does this mean to security customers? Well, it will require a higher monthly premium for monitoring your alarm system. With the higher price comes a quicker response rate from local police. In additional, customers with video verification systems will also have the peace of mind in knowing that even when they are unable to, there is someone watching over their property.

Many cities require fees to be paid for false alarm calls. Recently in Glendale, Arizona the city passed an ordinance that requires citizens to pay steep fines when police respond to false alarms. These fines range from $100 to $400 depending on the amount of previous false alarm calls received.

The equipment for a video verification system can be costly, but for some customers the price is worth the result. When you compare the potential loss of property if police are unable to respond in time to a real call or the increased risk of fines for false alarm calls, the setup and maintenance fees are well worth the investment.

How Video Verification Works

To those who are unfamiliar, video verification documents a change in local conditions. When a sensor goes into alarm, cameras record clips or open a feed to live video at the premise. The video and/or notification to view the live feed are sent to a central station where operators survey the situation.

With video evidence and other means of verification, such as audio or cross-zoning, central station operators can tell dispatchers more about what is happening at a property. As such, the quality of the process improves, raising the priority for dispatch and hastening response. This is in line with the protocol followed by most law enforcement agencies across the United States.

This is the procedure that the Central Station Alarm Association’s (CSAA) existing ANSI standard for video verification prescribes and it is an excellent starting point from which the industry can advance with input from law enforcement and the insurance industry. It is important for installing security companies to know that video verification is completely dependent on central station service.

Road to Making Gains

For video verification to truly gain acceptance by all ancillary industry stakeholders — from end users, police and the insurance industry — there must be uniformity in how it is applied. With several years of field experience gained by industry stakeholders, some of the advancements for the next generation of verification are being implemented.

Differentiations can be made for residential, commercial and high-value commercial, as well as interior and exterior applications. Within the commercial realm, there are different risk levels to be accounted for, such as the potential loss at a big-box electronics store compared with a sporting goods store that has a stock of weapons and ammunition.

Fortunately, one distinction everyone agrees upon is that professionally installed and monitored systems will garner prioritized response that DIY, self-monitored systems will not enjoy. That alone gives alarm contractors a tremendous selling point to current and prospective customers, especially as some of the largest technology companies enter into the smart-home market with automation systems and smoke/CO detector devices.

While the industry works on these issues, whatever the final form of this standard ends up being, video verification will deliver value for every stakeholder in the battle against property crime. Alarm system owners will get a fast police response and installing contractors will benefit from satisfied customers. At the same time, police remove criminals from the streets and the insurance industry cuts down on claims they have to pay out now and in the future.

The new video verification standard will be a win for everyone involved.

Understanding Power over Ethernet for video surveillance

PoE was, and is, supposed to make the powering of devices easy. You take your camera or other device that accepts power via the Ethernet port, you plug in the RJ45 jack to the port, and you walk away. Inside the head end, you plug the other end of the same Ethernet cable into a PoE switch or PoE injector and voila, power is magically delivered to the device along with the data connection. In theory, all of the normal worries are gone. AC power or DC power is irrelevant, and you don't even have to worry about over-powering a camera that, were you to fry it, could potentially set you back a few thousand dollars in equipment costs and man hours!

PoE was supposed to be this way, but practical reality has diverged from the perfect world concept in such a way that the actual installation is almost never that easy. So set aside the “perfect world” notions you have, and let’s start with the basics, so you can understand how PoE works.

There are four classes of PoE: Class 1, 2, 3 and 0. Each PoE classification denotes a range of power that is available to the end device as well as the power that must be available on the port of the power sourcing equipment (PSE):

PoE Classifications

• Class 1 --  4.5 watts at PoE port; 3.84 watts at device
• Class 2 --  7.5 watts at PoE port; 6.49 watts at device
• Class 3 --  15.4 watts at PoE port; 12.95 watts at device
• Class 0 --  15.4 watts at PoE port; .44 to 12.95 watts at device

In the world of PoE there are two kinds of switches that can provide PoE; the kind that operates with a “guarantee per port” and the kind that operates with a “total power budget”. Both kinds of switching are useful but there is a significant difference between them. If you happen to have a switch nearby, look at it and see if you can tell into which one of the above two categories your switch falls.

A switch that guarantees a certain wattage per port -- 15.4 watts per port, for example -- means that you can be sure that no matter how many Class 3 or Class 0 devices are plugged in, the switch will be able to power them. Of course, these switches tend to be bigger, more expensive and ill-suited for use outside of a nice climate controlled room, but they do prevent errors in power planning.

The second type of switch mentioned above -- the kind with a total power budget -- can only power as many PoE devices as it has power to spare. Imagine that you are working with a 4-port switch that carries a total power budget of 30 watts. This kind of switch could power four Class 2 cameras (4 devices x 7.5 watts = 30 watts needed). It could also easily power four Class 1 devices (4 devices x 4.5 watts = 18 watts needed). Continuing with that math, it would be able to power Class 3 or Class 0 devices, but it could only power two of those types of devices.

Power planning is where the rubber meets the road, and it brings up a challenge in our industry.

What happens if a chosen device (i.e., a PoE powered camera) does not clearly specify the PoE class and instead simply gives an operating wattage? You might think that this is OK since a camera which says “6.01 watts” is within the Class 2 specifications and therefore must be Class 2. But that’s where reality often diverges from common sense. In theory, what is supposed to happen is that a device is clearly labeled with a PoE classification so that when said device is plugged into a PSE device, the power budget has been worked out such that each device will receive its required PoE.

What I believe the security industry needs – right now, since PoE is happening today -- is clear labeling of the correct classification of PoE on each and every device that uses PoE. It is all well and good to place the operating or maximum wattage on the device, but industry manufacturers need to take the next step!

Manufacturers should label the device, print it on in large type and with bold colors, CLASS 1, CLASS 2, CLASS 3, CLASS 0, or whatever PoE Plus will hold as a classification. It's OK if your device actually only draws 3 watts during normal operation but for some reason is Class 0. Just tell your integrator channel partners and end users by labeling the device in the manner in which it was intended to be used. This lets system designers know the classification so that they might properly create a power plan and buy the correct devices. No one wants to be in the field trying to get a project done on time and only then realize that their switches don’t have enough power for the devices they’ve purchased.

While I am solidly standing on my PoE soapbox, let me also make a plea for PoE classification to be a priority on data sheets and marketing slicks. Some camera manufacturers make wonderful versions of these spec sheets. You’ll find photos, technical illustrations, cross reference charts, and more -- and often not a hint of PoE classification to be found anywhere. As someone who works with PoE, it sometimes seems as though PoE has become the crazy uncle that everyone has and who no one wants to invite to the party. Unfortunately for all of us, the crazy uncle could actually be the life of the party -- he makes it easy to entertain the guests and always has enough cash to pay for pizza -- but we haven't managed to take advantage of him yet!

PoE is supposed to make things easy, and between the standards bodies, the independent PoE offerings, the lack of classification usage, the errors in PoE chip usage within devices, and the propensity of some manufacturers to create Class 0 signatures in devices that draw minimal wattage, PoE's original purpose has been obfuscated in a way only rivaled by the current explanation of the financial bailout.

Why has it become so complex? Who knows! Unfortunately it has, and confusion has also shared a taxi with a lack of education on the road to PoE's widespread acceptance. People see a label on a device that says “802.af” or “IEEE Compliant” and then automatically assume that they can plug it into a PoE switch or midpsan and have it work with no problem. What makes the education problem worse is that often it does work with no problem, and this leads people to the assumption that PoE is really nothing more than Windows “plug and play” for power. Unlike Windows, however, there is no “blue screen of death” when using PoE. Instead there is a device that does not power on, or (in rare cases) a device that does power on followed by smoke, the smell of singed chip boards and fried capacitors, and then what was a very expensive security device becomes an equally expensive paperweight.