Security system integration refers to the integrated design, installation, test, customized interface development, and application support achieved through integrated cabling technologies, building automation technologies, communication technologies, network connectivity technologies, multimedia application technologies, security technologies, and network safety technologies for the purpose of providing customers with an internal security management system. Integrated sub-systems include the admittance system, building intercom system, monitoring system, theft prevention alarms, one-card passes, parking management, fire safety systems, multimedia display systems, remote meetings, and equipment room construction. Security system integration can be adopted as an independent system integration project or as a sub-system that is included in the integrated smart building system.