1. ISO/IEC 9646-1 Information Technology – Open Systems Interconnection – Conformance Testing Methodology and Framework – Part 1: General Concepts, 1994
2. ISO/IEC 9646-2 Information Technology – Open Systems Interconnection – Conformance Testing Methodology and Framework – Part 2: Abstract Test Suite Specification, 1994
3. ISO/IEC 9646-3 Information Technology – Open Systems Interconnection – Conformance Testing Methodology and Framework – Part 3: Tree and Tabular Combined Notation (TTCN), 1994
4. ISO/IEC 9646-4 Information Technology – Open Systems Interconnection – Conformance Testing Methodology and Framework – Part 4: Test Realisation, 1994
5. ISO/IEC 9646-5 Information Technology – Open Systems Interconnection – Conformance Testing Methodology and Framework – Part 5: Requirements on Test Laboratories and Clients for the Conformance Assessment Process, 1994