At its recent meeting at ITU Headquarters in Geneva, 11-19 April, ITU-T Study Group 5 – ITU’s Study Group on environment and climate change – consented two new ITU-T standards (Recommendations) targeting increased energy efficiency of ICT equipment.
The first Recommendation provides a specification of the direct current (DC) interface between power-feeding systems and connected ICT equipment, and the second defines energy efficiency metrics and measurement methods to assess the energy efficiency of telecommunication equipment.
Recommendation ITU-T L.1200 specifies a DC current interface able to operate using a power source of up to 400 Volts, which allows higher energy efficiency and reliability than can be achieved using lower-voltage power feeding solutions. The Recommendation standardizes a power feeding system applicable to all ICT equipment defined in a location using these power sources such as: telecommunication centres; radio base stations; data centres; and customer premises. Additionally, the DC interface will simplify the use of renewable energy sources producing DC output such as photovoltaic generators and fuel cell systems.
Recommendation ITU-T L.1310 defines energy efficiency metrics and measurement methods for telecommunication equipment including: wired as well as wireless broadband access; optical transport technologies; routers; switches; mobile core network equipment; and small networking equipment used in homes and small enterprises. L.1310 defines metrics which evaluate ICT equipment’s energy efficiency through a comparison between its technical performance and its energy consumption. The Recommendation also details measurement methodologies to verify energy efficiency figures produced in accordance with L.1300.
For more on the work of SG 5, please see the group’s webpage here.