For Security surveillance purpose, we have to use various cameras. Earlier analog cameras are used. but now, technology changes and IP cameras came.
IP cameras are cameras with ethernet connectivity to connect it into a network. Each Camera has assigned its own IP addresses similar to ip address of our computer. Through this IP address, We can do various functions such as zoom in, zoom out etc from remote central location.
Network video recorders are essential thing to record video which captured by each and every camera.