Summary

Recommendation ITU-T L.1207 gives explanation, requirements and guidance for boosting the spread of up to 400 V direct current (400 VDC) power systems and the distribution to information and communication technology (ICT) equipment. It includes 400 VDC remote powering up to 400 VDC of distributed ICT equipment, the option of interconnection of local renewable energy sources and their connection to DC power nanogrids and other users, extending the resilience capability of the telecommunication network and ICT sites to grid failures and climate change.