Migration of Analogue CCTV Systems to IP CCTV

Where there is an existing analogue based CCTV system and the objective is to move to an
IP based camera system there are three primary options.

Firstly you can scrap the existing analogue system and install completely new IP cameras running across either a new or existing network.

For anyone with a system of twenty or more analogue cameras this is not likely to be attractive. Secondly, all of the outputs from the existing analogue cameras can be encoded into IP format. This would normally be done in the control room so that existing cabling is unaffected. Once the camera signals have been converted to IP the rest of the system responsible for recording and playback would be IP based. Thereafter cameras will be replaced with IP units at the end of their life.



The third option is to replace existing digital recorders with hybrid units, which will accept both traditional analogue camera connections and IP cameras. This option minimises disruption as both the camera and control room equipment remain largely unchanged. However it does mean that most of the benefits of IP are not realised.

With any large analogue CCTV system there has been a major investment in installing the coax cable infrastructure (hence "Closed Circuit" TV). In many cases there will not be a network cable close to an existing analogue camera location. The options then are to either encode the video signal at the control room or to install line converters which enable the coax cable to be used as network cable.

If the latter route is taken then the analogue camera can be swopped for an IP camera. Where there is a local network the existing analogue camera can either have an encoder attached or the analogue camera can be replaced with an IP camera.

Leigh Visual are able to offer a range of solutions from simple single door solutions to complex integrated multi site installations. With the full range of manufactures available to us we are able to design systems to precise specifications