IP (Internet Protocol) CCTV cameras connect directly to a wireless network, network router or a network hub. IP cameras are also commonly referred to as network cameras. The advantage of an IP camera is that it can be situated anywhere on the Network / Internet. So you could have a camera located in France or Germany which you could access from your UK office.
The advtanges of IP cameras are lower costs, as cabling requires CAT5 instead of Coaxial cable which is cheaper. The flexability of being able to connect a camera anywhere on the network, which means you can install cameras easily throughout your company or worldwide and access them via the Internet / Intranet.