Optical fibre cable construction for sewer duct applications Amendment 1: New Appendix III – Italian experience: Construction of special optical fibre cables for extreme applications in sewer ducts (Study Group 15)
This Recommendation: ?C refers to optical fibre cables to be used for telecommunications networks in sewer ducts and/or drainpipes; ?C deals with the mechanical and environmental characteristics of optical fibre cables for sewer applications. The optical fibre dimensional and transmission characteristics@ together with their test methods@ should comply with [IEC 60793-2-10]@ [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 deal with a multi-mode graded index optical fibre and single-mode optical fibres@ respectively; ?C deals with fundamental considerations related to optical fibre cable from mechanical and environmental standpoints; ?C acknowledges that some optical fibre cables may contain metallic elements@ for which reference should be made to [b-ITU-T Plant] (see [ITU-T L.1])@ and other L-Series Recommendations; ?C recommends that an optical fibre cable should be provided with cable end-sealing and protection during cable delivery and storage@ as used for metallic cables. If splicing components have been factory installed they should be adequately protected.