Optical dielectric cable for backbone networks with a central strength member made of FRP rod in PE sheath (or without it); loose tubes with up 24 optical fibers each and (if necessary) dummy tubes are stranded around the strength member in inner PE sheath;with an armor of round steel wires and single or double PE sheath. Operational temperature of the cable is from -60°С to 70°С. Minimum temperature for installation is -30°С.
