IP SECURITY SURVEILLANCE - CCTV

An Internet protocol camera, or IP camera, is a type of digital video camera commonly employed for surveillance, and which unlike analog closed circuit television (CCTV) cameras can send and receive data via a computer network and the Internet. Although most cameras that do this are webcams, the term "IP camera" or "netcam" is usually applied only to those used for surveillance.
There are two kinds of IP cameras:
• Centralized IP cameras, which require a central network video recorder (NVR) to handle the recording, video and alarm management.
• Decentralized IP cameras, which do not require a central network video recorder (NVR), as the cameras have recording functionality built-in and can thus record directly to digital storage media, such as flash drives, hard disk drives or network attached storage

Potential advantages
• Two-way audio via a single network cable allows users to communicate with what they are seeing (e.g. gas station clerk assisting a customer on how to use the prepay pumps)
• Flexibility: IP cameras can be moved around anywhere on an IP network (including wireless).
• Distributed intelligence: with IP cameras, video analytics can be placed in the camera itself allowing scalability in analytics solutions.
• Transmission of commands for PTZ (pan, tilt, zoom) cameras via a single network cable.
• Encryption & authentication: IP cameras offer secure data transmission through encryption and authentication methods such as WEP, WPA, WPA2, TKIP, and AES.
• Remote accessibility: live video from selected cameras can be viewed from any computer, anywhere, and also from many mobile smartphones and other devices.
• IP cameras are able to function on a wireless network.
• PoE– power over Ethernet. Modern IP cameras have the ability to operate without an additional power supply. They can work with the PoE-protocol which gives power via the Ethernet-cable.