89 describes the general requirements and a design guide for suspension wires, telecommunication poles and guy-lines that support aerial cables for optical access networks. This Recommendation also describes loads applied to the infrastructures. Aerial Suspension: A type of fiber optic cable known as "aerial suspension" uses high-tension wires stretched between the two ends of the transmission line. Aerial suspension cables are commonly used for. Recommendation ITU-T L. Aerial infrastructure. The stresses caused by these environmental factors can cause the various cable components to elongate or shrink, thereby altering the fiber's immediate environment. Whereas actual changes in fiber length over the temperatures extremes are minimal, other cable components such as the cable sheath. The distance between poles of overhead lines is 25- -40 meters in the urban area, 40-50 meters in the suburbs, and no more than 67 meters in other sections. These cables are responsible for transmitting high-speed data, voice, and video signals over long distances, connecting homes and businesses to the main.
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