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About This Item
Full Description
ISO 22671:2007 defines the communications link transmission unit (CLTU) service in conformance with the transfer services specified in ISO 15396:1998. The forward CLTU service is a space link extension (SLE) transfer service that enables a mission to send communications link transmission units (CLTUs) to a spacecraft.
ISO 22671:2007 defines, in an abstract manner, the forward CLTU service in terms of
- the operations necessary to provide the transfer service;
- the parameter data associated with each operation;
- the behaviors that result from the invocation of each operation; and
- the relationship between, and the valid sequence of, the operations and resulting behaviors.
It does not specify
- individual implementations or products;
- the implementation of entities or interfaces within real systems;
- the methods or technologies required to radiate data to a spacecraft and to acquire telemetry frames from the signals received from that spacecraft for extraction of the Operational Control Field;
- the methods or technologies required for communications; or
- the management activities necessary to schedule, configure, and control the forward CLTU service.
Document History
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ISO 22671:2021
Space data and information transfer systems - Space link extension (SLE) - Forward communications link transmission unit (CLTU) service specification- Most Recent
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ISO 22671:2011
Space data and information transfer systems - Space link extension (SLE) - Forward communications link transmission unit (CLTU) service- Historical Version
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ISO 22671:2007
viewing
Space data and information transfer systems - Space link extension (SLE) - Forward communications link transmission unit (CLTU) service- Historical Version
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ISO 22671:2005
Space data and information transfer systems - Space link extension (SLE) - Forward command link transmission unit (CLTU)- Historical Version