This part of IEC 61156 describes symmetrical pair/quad cables intended primarily for horizontal floor cabling as defined in ISO/IEC 11801 and ISO/IEC 24702. NOTE Environmental classifications are presented in ISO/IEC 24702 with three levels of severity in four areas: mechanical, ingress, climatic, and electromagnetic; thus, in tabular form, they are referred to as the “MICE table”. This blank detail specification includes additional recommended environmental characteristics and severities which are derived from the environmental classifications that are specified for cabling for various environments. The blank detail specification determines the layout and style for detail specifications describing symmetrical pair/quad cables for digital communications. Detail specifications, based on the blank detail specification, may be prepared by a national organization, a manufacturer or a user.