This Recommendation specifies the emission and immunity requirements for switching, transmission, power, digital mobilebase station, wireless LAN, digital radio relay system, digital subscriber line (xDSL) and supervisory equipment. It also describes operational conditions for emission and immunity testing. Performance criteria for immunity tests are also specified. The general operational condition and performance criteria are recommended in ITU-T Rec. K.43. This Recommendation describes the specific testing conditions to be applied to telecommunication network equipment.