CCTV stands for closed-circuit television. So how does a modern CCTV system work? The answer depends on the type of system involved. The systems are best defined by the types of cameras used. There are two common types of cameras in use today: Analog and IP-based cameras.
CCTV cameras are designed to operate with internet connection. But they also work perfectly well and serve a vital function without it. Live, round-the-clock surveillance monitoring will still happen if a monitor is attached via cable to the CCTV.
Generally, most CCTV Footage gets stored for 90 days. However, every setup is different, and footage storage needs too. So, learn more about CCTV cameras, the storage part, or buying the right system with Western Digital