The video surveillance management software is used for achieving centralized monitoring, storage, management and control of all the front-end network video surveillance equipment (including network video server, network camera, and video decoder) and network video recorder (DVR). This management software can simultaneously display 36 audio and video screens, able to set up, control, and remote upgrade either device; – Support the functions of 1/4/9/16/20/36 screen switching, two-way voice intercom, electronic maps, log retrieval, alarm control, remote retrieval playback and others. It is functionally powerful, user-friendly and easy to operate, especially convenient for the users to realize networking applications of small and medium-sized remote network monitoring systems. 1.2 Main functions of the software The main functions of the video surveillance management software include: Maximum support 36-way audio and video channels at the same time Able to achieve centralized monitoring, storage, data forwarding, management and control for all the front-end network video surveillance equipment (including network video servers, network cameras and network DVR) Electronic map display Real-time video surveillance preview Two-way voice intercom, voice broadcast Video recording (pre-recording, manual recording, alarm linkage recording, timer recording) Provide channel, date video search playback Provide time search playback, accurate to the second PTZ control; preset, call, PTZ cruise Support the function of packet switching display, automatic reincarnation display Support the alarm function for video loss, video mobile, network abort and front-end sensor trigger Log management Front-end capture, and back-end capture DDNS (Dynamic domain analysis) Support P2P network Support transparent data transmission