This Recommendation specifies resistibility requirements and test procedures for telecommunication equipment which is attached to or installed within a customer premises building. The requirements of this Recommendation assume that earthing and bonding is in accordance with [ITU-T K.66]. The types of equipment covered by this Recommendation includes all types of telecommunication equipment@ e.g.@ modems@ telephones@ routers@ XDSL@ etc. This Recommendation is not meant to apply to PCs and printers@ etc. This Recommendation applies to both external and internal ports. Basic [ITU-T K.44] (test methods and test circuits) is an integral part of this Recommendation. It should be read in conjunction with [ITU-T K.11] and [ITU-T K.39].