The use of communications cables are more overhead, buried, pipe, underwater, indoor and other adaptive laying cable, laying the conditions of each cable also determines the laying of different ways, SL communication technology company probably summed up a few:
 
Overhead cable is hung on the pole used in the cable. This laying method can use the original overhead bright pole road, save construction costs, shorten the construction cycle. Overhead cable hanging on the pole, required to adapt to a variety of natural environments. Overhead cables are easily affected by natural disasters, such as typhoon, ice and flood. They are also easily affected by external forces and their mechanical strength are weakened. Therefore, the failure rate of overhead optical cables is higher than that of buried and duct-type optical fiber cables. Generally used for long distance two or less lines, suitable for private network cable lines or some local special sections.
The installation of overhead cable has two ways:
1: Suspension type: First, with wire hanging in the pole, and then use the hook to suspend the cable hanging on the cable, cable load carried by the hanging line.
2: Self-supporting: With a self-supporting structure of the optical cable, optical cable was "8" shape, the upper part of the self-supporting cable, cable load borne by self-supporting wire.
 
Buried optical fiber cable: The outer cable or steel wire armored, directly buried in the ground, requiring resistance to external mechanical damage performance and prevent soil erosion performance. Depending on the use of the environment and conditions to choose a different protective layer structure, for example, insects and rodents in the area, to be used with anti-insect ratchet sheathing cable. According to the different soil and environment, the depth of optical fiber cable buried underground is generally 0.8 meters to 1.2 meters. When laying, care must also be taken to keep the fiber strain within allowable limits.
 
Pipeline laying is generally in urban areas, laying the pipeline environment is better, so there is no special requirements for the cable sheath, without armoring. Pipe laying must be selected before laying the length of the laying section and the location of the connecting point. Laying can be used mechanical bypass or manual traction. Traction traction force does not exceed the allowable tension of the cable. Production of pipe materials can be selected according to the geographical conditions of concrete, asbestos cement, steel pipe, plastic pipe.
 
Submarine cable is laid in the water through the rivers, lakes and beaches and other places at the cable. This cable laying environment pipeline laying, buried laying conditions are much worse. Submarine cable must be used steel or steel armored structure, the structure of the protective layer should be based on the river hydrogeology into account. For example, in stony soils, the seasonal river beds that are prone to erosion, the fiber cables are subject to wear and tear, and large tensile forces require not only thick steel wires to be armored but also double armor. Construction methods should also be based on river width, water depth, velocity, riverbed, flow rate, riverbed soil conditions selected.
Underwater fiber optic cable laying environment conditions are much more serious than the direct buried cable, repair the fault of the technology and measures are much more difficult, so the reliability requirements of underwater fiber optic cable is also higher than the direct buried fiber optic cable. Submarine cables are also underwater cables, but the laying of environmental conditions more stringent than the average underwater cable, the higher requirements for submarine cable systems and components of the service life of more than 25 years.