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Lira (ISS)

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The Lira system (Russian: Лира) is a two-way communication system used between the International Space Station and Mission Control via the Russian Luch relay satellite constellation including the four first generation Altair satellites and the second generation Gelios satellite. The Russian Orbital Segment (ROS) communication Subsystems can receive commands directly from ground stations through the Regul Subsystem and can receive commands from the LUCH satellite through the Lira or the Regul System.