Outdoor direct buried optical fiber cable is a kind of transmissions cable which is especially designed to
be buried under the ground without any extra covering or piping to protect it. There has corrugated
steel tape or steel wires as the armed layer of the cable, which can bear physical damage and prevent
soil corrosion. Outdoor direct buried optical fiber cable is applied to WAN/LAN telecommunication and
harsh environmental conditions such as steep hills, rivers, etc.