Modernization of the technological communication network at railway transport facilities using PON technology

The existing telecommunication network the construction principle of which is nowadays based on active equipment that is required to be serviced due to its outmoded technology was considered. The modernization measures of telecommunication network at large freight terminals with the use of PON technologies which allow to complete properly and on time freigh handling, receipt of cargo, dispatch of cargo, making up and breaking down of cargo trains, shunting works were provided. It was decribed the stucture of PON technology which includes one OLT optical line terminal per network, a set of nodes of ONT subscribers connected to OLT by means of splittera over one fibre. OLT allocates time for information broadcasting to avoid the overlap of outgoing signals, to improve communication quality, noise immunity from ONT subcribers. Modernization of telecommunication network suppose the replacement of existing electrical cables laid in the cable channels on the fiber optic. Located at the station equipment and ATS Definity SI in the line-switching room will be removed. There will be a new small-size multifunctional equipment which allow to connect a large number of subscribers providing a broad range of service. Properly selected type of optical cable will allow to achieve a long duration of use of a new technological network with further development prospects, to use it only for organizing work at a large freight railway station. 