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This recommended standard does not change the basic

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Unformatted text preview: oes not change the basic technical contents defined in reference [B2], but the name of the procedure and the presentation of the specification have been changed so that: a) COP-1 can be used to transfer any data over any space link in either direction; b) the specification matches the Open Systems Interconnection (OSI) Basic Reference Model (references [2] and [3]). The most notable change in presentation is that COP-1 is defined as a procedure in the Data Link Layer of the OSI Model in this Recommended Standard, whereas it is defined as a procedure in the Transfer Layer (a sublayer of the Data Link Layer) in reference [B2]. Together with the change in presentation, a few technical details in reference [B2] have been changed based upon experience in using this procedure. Also, some technical terms in reference [B2] have been changed in order to unify the terminology used in all CCSDS Recommended Standards that define space link protocols. These changes are listed in annex D of this Recommended Standard. Through the process of normal evolution, it is expected that expansion, deletion, or modification of this document may occur. This Recommended Standard is therefore subject to CCSDS document management and change control procedures, which are defined in the Procedures Manual for the Consultative Committee for Space Data Systems. Current versions of CCSDS documents are maintained at the CCSDS Web site: http://www.ccsds.org/ Questions relating to the contents or status of this document should be addressed to the CCSDS Secretariat at the address indicated on page i. CCSDS 232.1-B-2 Page iii September 2010 RECOMMENDED STANDARD FOR COMMUNICATIONS OPERATION PROCEDURE-1 At time of publication, the active Member and Observer Agencies of the CCSDS were: Member Agencies – – – – – – – – – – – Agenzia Spaziale Italiana (ASI)/Italy. Canadian Space Agency (CSA)/Canada. Centre National d’Etudes Spatiales (CNES)/France. China National Space Administration (CNSA)/People’s Republic of C...
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