This standard specifies generic cabling within computer room spaces in data centre premises, or data centre spaces within other types of building. It covers balanced cabling and optical fibre cabling. This standard specifies directly or via reference to EN 50173-1 the: structure and minimum configuration for generic cabling within data centre spaces; interfaces at the external network interface (ENI) and equipment outlet (EO); performance requirements for cabling links and channels; implementation requirements and options; performance requirements for cabling components; conformance requirements and verification procedures. This standard has taken into account requirements specified in application standards listed in EN 50173-1. Safety and electromagnetic compatibility (EMC) requirements are outside the scope of this standard and are covered by other standards and regulations. However, information given in this standard can be of assistance in meeting these standards and regulations.