BS ISO 18441:2021 Space data and information transfer systems. Space link extension. Application program interface for transfer services. Core specification
2021BS ISO 18441:2021 Space data and information transfer systems. Space link extension. Application program interface for transfer services. Core specification
2016BS ISO 18441:2016 Space data and information transfer systems. Space link extension. Application program interface for transfer services. Core specification
2013BS ISO 18441:2013 Space data and information transfer systems. Space Link Extension. Application Program Interface for Transfer Services. Core Specification