Recommendation ITU-T L.1310 contains the definition of energy efficiency metrics test procedures, methodologies and measurement profiles required to assess the energy efficiency of telecommunication equipment.
Metrics and measurement methods are defined for telecommunication network equipment and small networking equipment.
These metrics allow for comparisons of equipments within the same class e.g. equipments using the same technologies.
Comparisons of equipments in different classes are out of the scope of this Recommendation.