Kalvu@net ~ Networking

CCTV over Internet / IP Cameras

DVR

IP cameras are Closed-circuit television (CCTV) cameras that utilize Internet Protocol to transmit image data and control signals over a Fast Ethernet link. As such, IP cameras are also commonly referred to as network cameras. IP cameras are primarily used for surveillance in the same manner as analogue closed-circuit television. A number of IP cameras are normally deployed together with a digital video recorder (DVR) or a network video recorder (NVR) to form a video surveillance system.

Potential of IP cameras advantages

Cost advantages

Reduced system cost and added functionality due to general-purpose IP networking equipment infrastructure

Lower cost of cabling in large installations (CAT5e instead of RG-59 coaxial cable).

Reduced space requirements in large (many camera) CCTV setups because video switching and routing is done via computer and does not need physically large and expensive video matrix switchers.

Flexible image format

Support for a variety of image resolutions including both standard analogue CCTV resolutions (CIF, NTSC, PAL, and SECAM) and megapixel resolutions.

Capability for digital zoom of high-resolution megapixel images.

Ability to select specific frame rates and resolution for each camera in a system.

No additional video encoder hardware is required to convert analogue video signals into digital data for recording onto hard drives.

Choice of video compression codec such as Motion JPEG, MPEG-4 Part 2, or H.264.

Extensible network infrastructure

Convergence onto new or existing IP cabling infrastructure, including sites with multiple buildings.

Transmission of commands for PTZ (pan, tilt, zoom) cameras via a single network cable.

Simple to add one camera at a time to the system.

Wireless allows the camera to be placed just about anywhere.

On-camera automated alerting via email or file transfer in response to video motion detection or dry-contact alarms.

Password lockout of unauthorized personnel to prevent viewing images or altering the camera configuration.

Support for different streaming media and compression formats to relieve transmission bandwidth and data storage requirements.

Encryption of camera control data and audio/video data.

Support for new embedded intelligent video motion detection (video analytics) with shape recognition and counting applied to objects, people, and vehicles.

Integration of video surveillance with other systems and functions such as access control, alarm systems, building management, traffic management, etc.

Remote configuration, diagnostics, and maintenance. Future-proof installations with field-upgradeable products due to the ability to upgrade camera firmware over the network.

For more information or any further questions please do not hesitate to contact us.

Network Solutions:

Share internet connection, cameras, files, printers and many other devices by simply connecting your computer to other devices, that is to say implementing network solutions.

There are different ways of stablishing a network it could be by Ethernet (cabling) or Wireless. Which one is the best? It would depend on your needs, there isn't one better than another, but you need to know which one is the best for your enviroment.

Wi-Fi hotspots :

What is a hotspot?A Hotspot is a public place such as an airport lounge, hotels or coffe which allows visitors to have access to a wireless network where they can check their e-mails or surf on the Internet.

This service is nowadays offered for free in hotels, coffe shops, bars, airports and airline lounges.

So why do not offer an extra service to your customers? ;-)

Why Go on Wireless?

The most obvious advantage of a wireless network is no wires. You don't need to have cables running round your office or home; there are no holes to drill through walls and there is no mess under your desk.

You will also be able to share files between your computers. Save all your music in one place and then listen it from another. Start to work on your computer in one room and finish it on your laptop. In addition, you will be able to share one printer between all your computers, saving you unnecessary costs.

Of course, having a wireless network means you can use other wire-free devices - such as laptops and handheld computers - wherever you want around the house, offices or open places such as your garden!

The range of a wireless network will vary depending on where your equipment is and how thick your walls are. In perfect conditions there will be a range of up to 35 meters, but the connection strength will be reduced whenever the wireless signal passes through walls, floors and furniture. Even so, standard wireless equipment will provide excellent service throughout most houses and small offices.

Why Wireless Security?

In order to get your wireless broadband connection working as quickly as possible you will need to secure your connection. If you do not secure your wireless broadband connection, non authorized people in the same area could be accesing your broadband without paying for it. Not only that but also they they might even be able to access confidential information from your computers.