This Recommendation:

– refers to multimode graded index and single-mode optical fibre cables to be used for telecommunication networks within buildings;

– deals with mechanical and environmental characteristics of the optical fibre cables concerned. The optical fibre dimensional and transmission characteristics, together with their test methods, should comply with [ITU-T G.652], [ITU-T G.653], [ITU-T G.654], [ITU-T G.655], [ITU-T G.656] and [ITU-T G.657], which describe single-mode optical fibres, and [ITU-T G.651.1] and [IEC 60793-2-10], which describe multimode graded index optical fibres;

– deals with fundamental considerations related to optical fibre cable from mechanical and environmental aspects;

– acknowledges that some optical fibre cables may contain metallic elements, for which reference should be made to [b-ITU-T handbook] (see [ITU-T L.1]), and other ITU-T L-series Recommendations;

– recommends that an optical fibre cable should be provided with cable end-sealing and protection during cable delivery and storage, as is common for metallic cables. If splicing components have been factory-installed, they should be adequately protected;

– recommends that pulling devices may be fitted to the end of the cable if required.