Fibre lease enables a company or institution to create its own data transmission network without the need for long-term and cost-intensive investments. Dedicated optical fibres belonging to the 3S network are used to connect the indicated locations. The bandwidth depends only on the client and the terminal equipment chosen by him, which can be flexibly adapted to changing needs. The service can also be provided with the use of 3S devices. Supervision of the network in 24/7 mode is exercised by the Network Operations Center [NOC].