1. Using a POE camera with
centralized recording
Created by:
www.agasio.com
www.agasio.com

2. PoE or Power over Ethernet is the transmission of power as well as data over a standard Ethernet wire. In
a Power over Ethernet system, a PoE network switch supplies up to 15Watts of power to the end device.
This may be a phone, poe camera or any other unit which is located on a network and requires less than
15 watts of power. When preparing an IP camera system you should look for cameras which use this
technology. There are 2 basic benefits when you use PoE for your system layout.
Only one cable is necessary to each camera for both power and video transmission compared to a
regular camera system which utilizes a Siamese wire for both video and power. A Siamese wire has a
coaxial RG59 cable and sometimes a 18 gauge two conductor wire molded together to produce a single
wire. This gives the look and ease of pulling a single cable to each camera. The problem with Siamese
wire compared to CAT5 cable is it can be clearly a lot more expensive. Siamese wires incorporate more
copper, which is a costly commodity in todays world. Siamese cable is additionally more difficult and
cumbersome to setup.
No extra power supply is needed for driving the poe cameras and it basically needs a single termination
on the camera and switch location. These two specs lead to the exact same benefits: cost benefits and a
more versatile and scalable system solution. Scalability and space necessities are becoming an enlarging
problem for many IT departments. Whenever adding a network camera system the possible rack space
needed for the present as well as future can be extremely vital when designing a system. Using PoE can
reduce space and minimize heavy, rigid bundles of wires.

3. There is no wrong or right when it comes to using edge recording or centralized recording.
Most of your call will certainly rely upon your own personal application and existing
network infrastructure. A hybrid of the 2 variations may be the best solution but this will
add more cost and restrict your available camera options. In a meeting with a college
district, I was asked about which solution was better. I replied that I felt neither was a better
solution; the two solutions have their very own benefits also it depends on the application.
During my conference I explained the following pros and cons for each.
Imagine you've got a company which has five structures ranging in size between 10,000 to
fifty thousand sq . ft. All 5 of your buildings are found within a large economic park. Each
building has a controlled number of fiber optic wires between them. Your company has a
main host server room found in the biggest of the five complexes. The IT department
handles the server room and there is limited prohibited access to that room. The rest of the
4 structures are accessible via fiber from the server room.
For this example, centralized recording gives you the most affordable and scalable remedy.
Centralized recording works well here. There is a main server room and all the buildings are
connected through locally owned fiber.