CCTV Networking

We understand that not everyone knows the ins and outs of networking computers, let alone networking a CCTV system into a computer network. This page is dedicated to helping you network a CCTV system into a LAN (Local Area Network) or over the internet.

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Connecting straight to a computer or LAN

All networked hardware has what is called an IP address; this is like the name of the unit. A computer network will have an IP range, which tells us which IP address we can use to enable us to match an existing network (e.g.10.0.0.XX). The last numbers (marked XX in the example) will be different for every unit on the network so as not to cause clashes. You need to make the DVR’s IP address in the same range as the rest of the network but make the last numbers different from anything else (IP ranges go from 1 to 255).

Connecting a CCTV system to the broadband internet

Internet Service Providers (ISPs) such as Demon Internet or BT can provide an IP address for broadband internet connections, enabling a CCTV installation to be broadcast over the internet and viewed from anywhere in the world. This is where the ADSL router (ROUTER - £29.99) comes into play. The benefit of the router is that you can specify what you want to view from outside when you connect to the internet account static IP address. This is done by forwarding a port to the local address of the DVR unit within the router. So if you were to log on to the IP address of the internet connection you would normally log on to the ADSL modem or router but if you were to log into that IP as well as specifying the port number (it is very apparent how to do this with most remote login software) you would be routed to the DVR.

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