Summary - L.104 (05/2025) - Small count optical fibre cables for indoor applications

Recommendation ITU-T L.104 describes the characteristics, construction and test methods of small count optical fibre cables for indoor applications. Indoor optical fibre cables that contain three or more fibres have been described in Recommendation ITU-T L.103/L.59. This Recommendation deals with small count optical fibre cables that contains one or two optical fibre(s). This Recommendation describes the cable characteristics that are required if an optical fibre is to demonstrate sufficient levels of performance. A method is described for determining whether the cable has the required characteristics to support the conditions where it is installed. The conditions may differ according to the installation environment. Therefore, detailed test conditions of experiments should be agreed between a user and a supplier on the basis on the environment in which a cable is to be used. In this revision, the template of Recommendation ITU-T L.104 was updated to be consistent with the latest L-series optical fibre cable Recommendations. ITU-T G.657 fibre was added as an optical fibre which can be used to the small count optical fibre cables for indoor applications. Existing appendices which describe various national experiences have been transferred to the new Supplement for L.100-series Recommendations.