video surveillance base package – including all fundamental features of video surveillance system, providing the prerequisite when stand-alone use entrance & exit, uvss, video intercom, facial recognition or any other application modules.supported:3 years free sup, main/auxiliary storage, alarm management, google map, evidence management, running on virtual machine, 100 users logged in simultaneously, heath monitoring/history maintenance data, client operation (e.g. visual tracking, custom window division),etc.