Network Sharing and Bandwidth
One of the first things I hear when beginning a conversation about using IP cameras on an existing network is “Will it eat up all my bandwidth and slow everything way down?” The answer, not unless you’re using extremely high resolution cameras, but using cameras with 1-megapixel of resolution or less should have little effect on bandwidth and still provide high quality images.
One of the first things to do when discussing sharing a network with a potential customer is to find out what they mean by sharing the network. Do they mean sharing the physical cable plant or just switches and infrastructure? As some of you might know, it is possible to share a single network switch without the networks interfering with each other, as long as the switch has the right capabilities.
Some people will recommend completely different networks for security systems, which is not usually necessary, unless of course, the network must be tightly controlled, which in most cases is not necessary. The most important part to remember when determining whether or not to share the network, or parts of it, is how much bandwidth the cameras will take up. One thing to keep in mind here is that megapixel cameras use a lot more bandwidth than a standard resolution camera. Older models of IP cameras that used MPEG4 with 30ips and a CIF of 640 X 480 would produce between 2 and 5 megabits per second (Mbps), depending on the brand. But now with H.264 we are seeing 2-megapixel cameras at 30ips producing up to 6Mbs, again depending on the brand. That is a huge difference when you are using several IP cameras on your system!
Just remember if you are using 1-megapixel cameras or less and have no more than 16 cameras on the system, bandwidth is not something to worry about too much. Cameras with higher resolution will take more consideration in the load your network can handle. Don’t be afraid to ask an expert.
Other news for Monday 01 November, 2010
News for Thursday 28 October, 2010
- Thermal IP Cameras: What You Need to Know
- How to See in the Dark
- Security Products, Self Defense Weapons
- Cheap Home Security Cameras-Product Reviews
- Wednesday 27 October, 2010
- Monday 25 October, 2010
- Thursday 21 October, 2010
- Tuesday 01 June, 2010
- Sunday 23 May, 2010
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