The International Electrotechnical Commission establishes the foundational standards for cable intermediate joint manufacturing through the IEC 60502 series, which specifically addresses power cables and their accessories for rated voltages from 1 kV to 30 kV. Cable intermediate joints are critical components in electrical power distribution systems that enable the seamless connection of cable segments while maintaining electrical integrity and safety standards. These essential accessories serve as the bridge between cable sections, ensuring continuous. The first ITU-T Handbook related to optical fibres, Optical Fibres for Telecommunications, was published in 1984, and several others have been produced over the years. The technical content of IEC publications is kept under constant review by the IEC. Please make sure. stacles regarding interoperability and compatibility between manufacturers. This work materialized through the development of good practices, procedures and specifications documents, reflecting a certain state of the art at a given time, and the result of a consensus of all stakeholders (op lable. ITU-T and IEC have implemented multiple changes to their respective documents regarding Single Mode Fiber (SMF) since the last IEEE document was published. aThe fiber dispersion values are normative, all other values in the table are informative.