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BS ISO/IEC 10731:1994
Information technology. Open systems interconnection. Basic reference model. Conventions for the definition of OSI services (British Standard)
Establishes definitions of terms and conventions for use by Recommendations International Standards defining OSI-services within the scope of the Basic Reference Model of Open Systems Interconnection. Specifies the application of these terms and conventions to the Recommendations International Standards defining OSI-services within the Application Layer of the Basic Reference Model of Open Systems Interconnection and defining (N)-services for Layers 1 - 6 of the Basic Reference Model of Open Systems Interconnection.
British Standards Institution [bsi]