Installation services, maintenance services and repair services of computer software; computer programming; computer consultancy services; design services; integrating building management services; integrating security and life safety services contained within buildings; integrating and controlling building services installed, mechanical services, access control and lighting, electrical services, fire detection services, lift management, refrigeration, energy management, alarm monitoring, hydraulics, emergency power systems, HVAC systems, DDC systems; integrating digital communications; installation of integrated extra low voltage systems; open system technologies; web interfaces for monitoring data collected; building performance displays