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Physical security

Today, many CCTV and security systems are limited to viewing a building or small geographical area, with limited or no remote access capability. As site security is now extremely important, the security systems need to be extended to encompass the whole estate so that all locations are integrated and there is the capability to remotely view CCTV footage and the status of sites. Rather than using dedicated analogue CCTV cameras that are physically connected back to a video matrix switch, the cameras are connected to the IP infrastructure. This can be achieved using either integrate IP CCTV cameras or existing analogue CCTV cameras with IP gateways.

The IP network now becomes the virtual video matrix switch, allowing connectivity to any camera in the network from anywhere and from a variety of devices such as IP phones, laptops, PDAs and the traditional PTZ (pan, tilt and zoom) security console. It is now a simple task to extend the use of CCTV from purely security to monitoring any physical asset such as water levels in reservoirs or flow and blockages in water courses.With the converged network in place we can now extend the security infrastructure to include the public address system and the physical security systems so that control for all sites can be achieved from a single location.

It is necessary to consider the bandwidth that IP CCTV will use and ensure that this traffic is prioritised appropriately over our IP network. There are additional techniques to ensure the streaming of video only when there is a potential incident. This can be achieved using intelligent analytics that will detect certain anomalies within the video picture such as a human walking into the picture rather than just seeing movement that a traditional passive infrared detector would identify. This ensures that the video footage is correctly targeted and that bandwidth is not being drained by images that are not required. As a trigger is activated the video stream can be started or it could also be up scaled from a low streaming rate. The video streaming can also be initiated via standard triggers such as doors opening and as well as sending the video stream traditional security alarms can also be triggered. Unified communication services

Unified communications (UC) has moved on from just replacing traditional voice with IP voice calls into much more. There is now the ability for the IP phone to integrate into many third-party applications including process control application that allow the monitoring of water treatment processes from the IP phone rather than from the a central console.

These IP phones typically use XML (eXtensible Markup Language) to display the information and can have touch screens for easy navigation. Simply logging on to the phone gives an instant view of the status of the treatment works as well as acting as a fully functioning phone.

These statistics can permanently be fed to the IP phone, only being interrupted if a call is in progress. The use of the flexible XML language ensures that there is a large number of applications that can be quickly integrated and deployed without the need to install new clients on laptops and PCs.

Additional applications that could be used in water treatment works and outstations are lighting control, clocking in systems, loan worker solutions, video conferencing. The IP phone can also link into the security and IP CCTV systems.

It is now possible to monitor real-time video using the touch sensitive screen to navigate to the required camera. This, for example, gives the field worker the ability to open a valve and check on the effect by viewing the CCTV camera on a remote site from an IP phone.