Summary

This Supplement provides information on the background and specifications used in the development of optical fibre and cable ITU-T Recommendations such as [ITU-T G.651], [ITU‑T G.652], [ITU-T G.653], [ITU-T G.654], [ITU-T G.655], [ITU-T G.656], [ITU-T G.657] and L series. It also contains information used in the development of test method Recommendations such as [ITU-T G.650.1] and [ITU-T G.650.2]. Moreover, this Supplement maps ITU‑T documents to optical fibre and cable standards developed under IEC.