This European Standard specifies: a) the structure and configuration of the backbone cabling subsystems of generic cabling systems within the types of premises and/or spaces defined by the other standards in the EN 50173 series; b) channel transmission and environmental performance requirements in support of the standards in the EN 50173 series (which have taken into account requirements specified in application standards listed in Annex F); c) link performance requirements in support of the standards in the EN 50173 series; d) backbone cabling reference implementations in support of the standards in the EN 50173 series; e) component performance requirements in support of the standards in the EN 50173 series; f) test procedures to verify conformance to the cabling transmission performance requirements of the standards in the EN 50173 series. Safety and electromagnetic compatibility (EMC) requirements are outside the scope of this European Standard and are covered by other standards and regulations. However, information given in this European Standard can be of assistance in meeting these standards and regulations.