Durable aerial hardware for fiber utility and telecom builds, including brackets, straps, J-hooks, clamps, grounding, and mounting solutions for pole line and aerial cable support. These Malleable Iron fittings are used with standard pipe near sidewalks and buildings where there is insufficient. When it comes to Pole Line Hardware, MacLean has a depth of knowledge and manufacturing experience that is unsurpassed in the market. MacLean Pole Line hardware conforms to the latest applicable Bellcore, ANSI and ASTM standards. Fits to poles of wood, or steel or concrete. Cross. Optical Distribution Network (ODN) is composed of OLT and user equipment interconnected by optical fibers, splitters, and connectors, with downstream signal streams coming to the user interfaces and upstream signal streams for OLT processing purposes.