... Guideline 2002. August 2002 3 • Coaxial and fibre-optic cables in vertical and horizontal pathways for LAN systems, other computing systems, security systems, control systems, video systems ... circuit breakers, additional air-conditioning, additional cabling, back-up power systems, access control systems etc.) to meet the requirements of their specific systems. Carriers, carriage service ... including: • Backbone cabling for tenant telephone systems • Pay TV cabling • Antenna cables (e.g. mobile telephone systems) • Tenant LAN/WAN systems • Security and surveillance systems Riser shaft...