Closed-circuit television monitoring system follows the principle of openness. The system provides interfaces and tools in software, hardware, communication, network, operating system and database management system that meet international standards, so that the system has good flexibility, compatibility, scalability and portability. The whole network is an open system, which can be compatible with the products of multiple monitoring manufacturers, and can support secondary development.

Closed-circuit television monitoring system is also called closed-circuit television monitoring system (CCTV for short). A typical closed-circuit television monitoring system is mainly composed of five major parts: front-end audio and video acquisition equipment, audio and video transmission equipment, back-end storage, control and display equipment. The back-end equipment can be further divided into central control equipment and sub-control equipment. The front and back end devices can be formed in many ways. The connection between them (also called transmission system) can be realized through coaxial cable, twisted pair, optical fiber, microwave, wireless and other ways.