“Dark fiber” lease Milecom leases out “dark” optical fibers on its own network. Milecom access network is built on the basis of high-quality optical fiber on the principle of cable rings, intersecting with radial cables, which provides high reliability of communication and reserve in all areas. All cables are routed through cable duct system, through collecting channels and on supports. All placement facilities have official documents (leases, ownership). Maintenance of the fiber-optic network is carried out by the company’s own forces and contractors. “Dark fibers” can be taken on lease both in the composition of the optical ring in the settlement and on the main lines.