Therefore, we recommended two countermeasures to prevent this damage: (i) Install a new conduit line to avoid using multiple threading cables in the same conduit, and (ii) in the inevitable case that new metallic cable is installed in the conduit line containing previously. Therefore, we recommended two countermeasures to prevent this damage: (i) Install a new conduit line to avoid using multiple threading cables in the same conduit, and (ii) in the inevitable case that new metallic cable is installed in the conduit line containing previously. Recommendation ITU-T L. 25 deals with general features in relation to the maintenance and operation of optical fibre cable networks. This revision is intended to be appropriate for the current situation with respect to. In this article, we explore the primary modes of field failure in fiber optic cables and outline best practices to prevent them. Macrobends are. According to the interruption of the optical fiber of the faulty optical cable, the fault types can be divided into three types: complete optical cable interruption, partial bundle pipe interruption, and partial optical fiber interruption in a single bundle pipe. The optical cable is completely. Small oil micro-deposits and dust particles on fiber optic cable optical surfaces may cause a loss of light or degraded signal power which may ultimately cause intermittent problems in the optical connection. It could hurt an installer or get them sued by an irate network owner. The use of overhead power line routes by electricity utilities to develop a telecommunications right of way has now become common place throughout the world.