The riser cable is a non-metallic indoor/outdoor duct cable FYORMU developed by Nestor Cables. It has central tube construction and therefore it is very crush resistant. Aramid fibre armouring of the cable gives high tensile strength and good bending characteristics in all bending directions. The number of fibres is 6, 12 or 24. The riser cable has break out units on both ends. In the upper end the riser cable breaks into 2-fibre and in the lower end into 1-fibre cable pigtails. The lengths of the pigtails are customer specified at both ends.