The SSCS allows for direct communications between orbiting spacecraft in close proximity. This enables the Orbiter, the ISS and EVA astronauts to use the same system for communicating voice and data independent of ground support. The SSCS general command capability augments the S-band system and provides for enhanced safety and will replace the current EVA frequency comm bands.
The purpose of this Space-to-Space Communications System (SSCS) test is to demonstrate the systems capabilities and to allow the crew to gain familiarity with its operation during a mission.
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