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To provide sustainable and stable information and communication technology (ICT) services, the NTT Group is addressing various issues, such as standardizing indicators for application service quality, promoting network services, protecting telecommunication equipment from electromagnetic interference and lightning surges, assessing the impact of ICT on climate change, and promoting a circular economy conductive to sustainable development. This article introduces the activities and standardization trends in each of the above fields. [ABSTRACT FROM AUTHOR]

This article presents examples of equipment and facility deterioration due to corrosion of guy wires and maintenance holes installed in coastal areas as well as examples of countermeasures to protect equipment and facilities from salt damage. This is the seventy-sixth article in a series on telecommunication technologies. [ABSTRACT FROM AUTHOR]

This article provides two case studies of the occurrence of mold in telecommunication equipment and facilities and its impacts on the materials of the equipment and facilities. This is the seventy-third article in a series on telecommunication technologies. [ABSTRACT FROM AUTHOR]