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Networking IP cameras using cat 6 cables

Last response: in Systems
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February 17, 2013 10:33:10 AM

Hello,
I have installed an IP CCTV SYSTEM for a client. Due to design reasons, I decided to have two locations for switches; one of them being the control room. My challenge is in linking the two locations. The total number of cameras on site(and on one location other than the control room) is 61. The distance between the two locations is 78 metres. Fibre seems to give me problems. Can cat 6 cable give the right performance including speed? what is the maximum number of cameras that can a single cat 6 cable handle properly without compromising speed in such a situation? Please help urgently?
I also have a few related questions:
1. Why is that most CCTV images seem to be in slow motion unlike in ordinary TV broadcasting? how can such a scenario be rectified?
2.what is the bandwidth of cat 6 cable?


Daniel Osuto

Best solution

February 17, 2013 1:16:26 PM

OSUTO said:
Hello,
I have installed an IP CCTV SYSTEM for a client. Due to design reasons, I decided to have two locations for switches; one of them being the control room. My challenge is in linking the two locations. The total number of cameras on site(and on one location other than the control room) is 61. The distance between the two locations is 78 metres. Fibre seems to give me problems. Can cat 6 cable give the right performance including speed?

The maximum length (for full bandwidth) of Category or 6 or 6A cable is 100 meters, this allows 90 meters between switch/camera and a 10 meter patchcord between switch/server.

OSUTO said:
what is the maximum number of cameras that can a single cat 6 cable handle properly without compromising speed in such a situation? Please help urgently?

The maximum number of cameras is totally dependent upon framerate (ie: bandwidth/camera), see answer 1 below.

OSUTO said:
I also have a few related questions:
1. Why is that most CCTV images seem to be in slow motion unlike in ordinary TV broadcasting? how can such a scenario be rectified?

To conserve bandwidth (and also due to processing horsepower required to sample/compress the video into H.264), the IP camera operates at a much lower "frames per second (fps)" rate than that of a broadcast video. The only way to rectify this is to purchase cameras capable of 30 fps. Something like this -> http://www.bhphotovideo.com/c/product/733751-REG/Vivote...

OSUTO said:
2.what is the bandwidth of cat 6 cable?
Daniel Osuto

The bandwidth of Category 6 cable is 250MHz, the bandwidth for Category 6A is 500MHz. Although for your purposes, Category 5E is preferable to either of the Cat 6 standards.

Keep in mind, the heavier wire in some Cat 6 cables makes them too thick to attach to standard 8P8C connectors without a special modular piece making them somewhat problematic in connectorizing.
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February 27, 2013 4:18:28 PM

Best answer selected by OSUTO.
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