The network between computers was first established by means of a cable. This method is mainly used for the creation of LKSH inside the administrative building. It is also possible to establish LKSH between objects located at a maximum distance of 500 meters from the administrative building by means of a cable. CAT5, CAT6 and CAT7 cables are used to build LKSH. Cables belonging to these categories differ from each other according to the speed of information transmission, cost and equipment used. CAT5 and CAT6 cables are mostly used in the territory of the Republic of Azerbaijan. LKSH, built on the basis of cables of this category, ensures the speed of information transfer from 100 Megabits/second to 1000 Megabits/second.