General principles of designing

The digital video surveillance system generally contains:

1. Servers—hardware and software platforms used to receive and process video and audio signals from analog and IP surveillance cameras.
2. Remote administrator workstations—hardware and software platforms used for remote administration of the video surveillance system and as the specialized platforms for video gateway, remote archive server, remote web server, and so on.
3. Remote client—hardware and software platforms used as operator workstations to implement remote video surveillance and audio monitoring.

Servers, remote administrator workstations, and remote clients are integrated into the video surveillance system, fitting the system's set of functions, safety requirements, specific features of the protected facility, and so on. The video surveillance system can include several subnetworks that interact via the selected server and remote administrator workstation node. The distributed architecture of the video surveillance system provides synchronized data exchange (events, commands, setting parameters, and so on) among its components.

Servers, remote administrator workstations, and remote clients communicate with each other via LAN, WAN, VPN, and wireless networks using the TCP protocol.