ISO-18445 Historical Revision Information
Space data and information transfer systems - Space Link Extension - Application Program Interface for the Forward CLTU Service

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ISO 18445:2013 specifies extensions to the API needed for support of the Command Link Transmission Unit (CLTU) service defined in CCSDS 912.1-B-2.

ISO 18445:2013 defines extensions to the SLE API in terms of:

  • the CLTU-specific functionality provided by API components;
  • the CLTU-specific interfaces provided by API components; and
  • the externally visible behavior associated with the CLTU interfaces exported by the components.

It does not specify

  • individual implementations or products;
  • the internal design of the components; and
  • the technology used for communications.

ISO 18445:2013 defines only interfaces and behavior that must be provided by implementations supporting the forward CLTU service in addition to the specification in CCSDS 914.0-M-1.


To find similar documents by classification:

49.140 (Space systems and operations Including space data and information transfer systems, and ground support equipment for launch site operations)

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Document Number

ISO 18445:2013

Revision Level




Publication Date

June 1, 2013

Committee Number

ISO/TC 20/SC 13