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i) service data unit.
18.104.22.168 Definitions from OSI Service Definition Conventions This Recommended Standard makes use of a number of terms defined in reference . The
use of those terms in this Recommended Standard shall be understood in a generic sense; i.e.,
in the sense that those terms are generally applicable to any of a variety of technologies that
provide for the exchange of information between real systems. Those terms are:
d) service provider;
e) service user.
22.214.171.124 Definitions from TC Space Data Link Protocol This Recommended Standard makes use of the following terms defined in reference : CCSDS 232.1-B-2 Page 1-3 September 2010 RECOMMENDED STANDARD FOR COMMUNICATIONS OPERATION PROCEDURE-1 a) Communications Link Control Word (CLCW);
b) Control Command;
c) Frame Data Unit (FDU);
d) Global Virtual Channel Identifier (GVCID);
e) Transfer Frame;
f) Type-A Service;
g) Type-A Transfer Frame;
h) Type-AD Transfer Frame;
i) Type-B Service;
j) Type-B Transfer Frame;
k) Type-BC Transfer Frame;
l) Type-BD Transfer Frame;
m) Virtual Channel Identifier (VCID);
n) Virtual Channel (VC).
1.6.2 NOMENCLATURE The following conventions apply throughout this Recommended Standard:
a) the words ‘shall’ and ‘must’ imply a binding and verifiable specification;
b) the word ‘should’ implies an optional, but desirable, specification;
c) the word ‘may’ implies an optional specification;
d) the words ‘is’, ‘are’, and ‘will’ imply statements of fact.
1.7 REFERENCES The following documents contain provisions which, through reference in this text, constitute
provisions of this Recommended Standard. At the time of publication, the editions indicated
were valid. All documents are subject to revision, and users of this Recommended Standard
are encouraged to investigate the possibility of applying the most recent editions of the
documents indicated below. The CCSDS Secretariat maintains a register of currently valid
CCSDS Recommended Standards. CCSDS 232.1-B-2 Page 1-4 September 2010 RECOMMENDED STANDARD FOR COMMUNICATIONS OPERATION PROCEDURE-1  Information Technology—Open...
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- Spring '14
- Space Exploration, ........., European Space Agency, CCSDS