This Recommendation applies to wireline telecommunication equipment having a rated root mean square (r.m.s.) alternating current (AC) or direct current (DC) supply voltage not exceeding 600 V.

This Recommendation specifies the electromagnetic compatibility (EMC) common requirements and test methods for wireline telecommunication network equipment, used in public telecommunication networks to provide telecommunication services such as: voice, data, audio and video to end-users, using all applicable media and all types of wireline access technologies.

Wireline telecommunication network equipment with radio functions are not in the scope of this Recommendation. [ITU-T K.136] applies to equipment with radio functions.

Test conditions for all types of wireline telecommunication network equipment are described, e.g., access equipment, router and switching equipment, optical transmission equipment, data centre and cloud computing equipment and power supply equipment (including high-voltage direct current (HVDC)).

This Recommendation describes the specific immunity testing levels, performance criteria as well as limits of emission testing to be applied to wireline network telecommunication in various environments.