IP cameras —- They work within your LAN network. It can wired or wireless. They have things like IP address and they usually login using computer by typing in their IP address directlyAnalogue CCTV system —- They work on their own system. Every cable from the CCTV camera would have to go to DVR and from the DVR, then you can add into your LAN.

There are both pros and cons using these system. Depending on your needs and requirements.

Higher resolution. They can achieve up to 1980 x 1080 or even higher.
They make adding of cameras easy. If you are running a building with many cameras. You will appreciate that
Higher security. If you go on wireless.. they have encryption like WPA/WPA2 which make it a bit harder to hack.

Higher cost. Each IP cameras will cost higher than standard CCTV cameras.
High bandwidth. You need a fast LAN if you are installing many due to their streaming. You need to have a good reliable IP cameras.
Generally I feel you need above average IT knowledge to know what is going on and troubleshoot in case you having problem.

Stable and reliable. This technology has been around for years…
Cost effective. They are generally cheaper and easy to install.
Easy install. You do not need superb IT knowledge to install this. Just plug and play.

Resolution stay max cap at 720 x 576 (D1). Anything higher will be a different system like SDI etc. But they are even more expensive than IP cameras.
Tons of cable. If you are running a 16ch or 32ch, you are like having 32 cables running back to DVRs. It is also more tedious if you need to add cameras last minutes as you need to run the cables from cameras back to DVR again.

Closed-circuit television (CCTV) is the use of video cameras to transmit a signal to a specific place, to a limited set of monitors. It differs from broadcast television in that the signal is not openly transmitted. The signals are broadcast over a local level (at short ranges) either over a wire connection or point-to-point wireless network.
They are commonly used in banks, casinos, departmental stores etc. that require 24 hours surveillance.IP video surveillance can be defined as the transmission of video utilizing open internet protocols and standards for the purpose of recording and monitoring.The “IP” in IP camera means “internet protocol”.

They work very similarly to webcams, except they may have better security than the average webcam you see on Instant messengers.
IP camera is used when you need surveillance over long distances