FIELD: electric and radio communications, possible use in railroad transport for organization of train radio communication circles of train dispatcher, station duty officers, other commanders and workers, organizing movement of trains.;SUBSTANCE: in accordance to invention, each client hears everyone, as a result of which control over train situation is provided as well as over actions of workers organizing train movement, resulting also in increased safety of train movement.;EFFECT: increased reliability of radio communications due to provision of talks via bypass branches of circles in case of disruption of main branches; expanded functional capabilities.
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