Summary

The goal of Recommendation ITU-T L.1396 is to define the measurement of electrical power and energy consumption of ICT equipment as well as environmental parameters (temperature, hygrometry) in order to improve energy monitoring and to correlate the power consumption to equipment operation activity (telecom traffic, computation, etc.). It is also to define the transfer protocol of this measurement data from site to network operation centre. Understanding power consumption provides the opportunity to reduce energy consumption of equipment and/or the network. Granularity, measurement period and accuracies are defined to meet these targets. They may depend on equipment types and location in the different segments of a network (customer termination, access, core, data-center, etc.). In addition, these measurements can be used to improve engineering and operation including more accurate dimensioning of power systems, network evolution modelling and prevision, audit on field, etc.