It is applicable to communication systems such as ISDN, local area networks and data communication systems and specifies the definitions, requirements and test methods of multicore, symmetrical pair and quad cables. It is also applicable to cables used for customer premises wiring. Includes the following significant technical changes with respect to the previous edition: a) inclusion of definitions and test methods in support of the MICE table in ISO 24702; b) inclusion of definitions and test methods in support of new cable categories 6A and7A; c) inclusion of definitions in support of PoEP.