Due to the ever-increasing volume of data in global networks, Data Centers are becoming increasingly important, and their construction continues at a steady, faster pace. This places ever-increasing demands on the optical infrastructure. These requirements are met by the modular concept of the OPTOKON DOS cabling system. The system is based on factory prepared modules, preterminated cables, which significantly reduce the volume of installation work during construction and facilitate the fault clearence during operation. The DOS – SN-MT16 cabling system is based on newly developed multi-fiber connectors SN-MT16, designed to terminate 16 fiber cables. The design of a cable with 96 fibers was chosen, 16 fibers are stored in 6 tubes.