Analogue CCTV System

Video surveillance systems are considered one of the most reliable methods of protecting various places. For many years, the systems have been continuously evolving, both in the respect of the equipment used and its functionality. So far, the most popular applications have been based on DVRs. Despite their popularity, they have certain shortcomings (aside from quality limits), first of all the necessity of providing an individual cable for each camera, the second – limited number of channels (the next ones will require another DVR), and finally – one monitoring center (with the DVR inside).

Though most of our attention these days is focused on the transition to IP video technology, it’s important to note that analogue CCTV solutions can still be highly effective for many surveillance applications, especially those on a budget. With traditional CCTV, the video signal is processed and transmitted in analogue format for local viewing from one central monitoring location. But that doesn’t mean you can’t use analogue cameras in an IP-based surveillance environment. Using IP video encoders and other equipment such as digital video recorders and hybrid DVRs makes it possible to leverage your existing analogue cameras while migrating into the world of digital surveillance.

Analog CCTV System Architecture

Analog CCTV System Architecture

Merits & Demerits of Analogue Surveillance

These days, there’s a lot to think about when putting together a video surveillance system. And the first question on most people’s minds is “Do I go with traditional analogue cameras, or IP network cameras?” There are pros and cons to both choices. Let’s focus our attention on analogue CCTV cameras.

Merits of analogue CCTV

Lower initial cost – In most cases, analogue cameras cost less up front than IP network cameras.
Wide-spread compatibility – Mixing and matching camera models and surveillance equipment form different manufacturers is easy with an analogue CCTV set-up.
Lower initial cost – Analogue cameras tend to handle low-light situations better than IP cameras on average, though IP camera technology is improving in this regard.

Demerits of analogue CCTV

Expensive cabling – For large-scale surveillance applications, analogue cameras require complicated cabling schemes that can be quite expensive and also challenging to install.
Limited features – Many of the advanced features now available with IP cameras (for instance: mega pixel resolution, digital zoom, and video analytics), aren’t available in analogue CCTV model

IP Based CCTV System

It’s no secret that the future of video surveillance is in IP-based solutions, They work by turning images and audio into data then transmitting this data over a network or Internet connection. The ultimate benefit of this over analogue CCTV systems is greater flexibility, better performance and easier installation but that doesn’t mean you need to throw out your existing analogue cameras as you make the transition. Cutting-edge surveillance equipment such as hybrid DVRs and video encoders allow you to build a future-proof IP surveillance network while retaining the analogue security cameras you already have on hand.

IP video technology provides flexible, scalable, and cost-effective surveillance solutions suitable for a wide range of industries and applications. With an IP-based video surveillance setup, users can monitor and record video remotely using an IP network as the system’s backbone. IP video installations can be deployed in any environment, and offer many benefits previously unavailable with analogue CCTV systems.

IP Based CCTV System Architecture

IP Based CCTV System Architecture

Greater Flexibility : IP CCTV systems do not require local recording, they can transmit their images across Local Networks, the Internet and Wide Area Networks to a central location, where they can be recorded, viewed and managed

Scalability – With an IP based system additional cameras can easily be added to your existing network, wired or wireless, this makes wiring IP CCTV systems simple, causing less disruption, reducing the time required to install them and minimizing unsightly cables. For anyone familiar with networking, setting up an IP based system is simple with intuitive operation and evaluation. Cameras are powered over Ethernet (PoE) allowing greater flexibility to install cameras without an available power outlet. Video is recorded and stored to a Windows based server, so storage is expandable to the size and scope of the installation.

High Resolution Cameras – IP cameras range from 4CIF to high resolution megapixel cameras.

Better System Integration – IP CCTV systems communicate using IP, allowing them to integrate and co-exist on the same network/cabling as other IP based systems, such as Access Control and IP Phone Systems etc… Integration also means that these different systems can work together, for example an IP camera picking up movement will be able to transmit images of that movement to an IP Video Phone automatically. IP systems also allow the direct use of IP-based services as standard such as e-mail or image sending via FTP.

Remote Management & Configuration – IP based systems can be easily managed and configured remotely from anywhere. Changing camera settings, the way the images are recorded and everything in between can be managed and configured from a remote location.

IP Technology – With technology improving everyday the market for security cameras is changing paths towards the IP market.