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IEC 60870-6-2 Ed. 1.0 b:1995
Telecontrol equipment and systems - Part 6: Telecontrol protocols compatible with ISO standards and ITU-T recommendations - Section 2: Use of basic standards (OSI layers 1-4)
Considers the standards related to layers 1-4 of the OSI reference model and describes the role and the functions carried out by each layer.
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International Electrotechnical Commission [iec]