4ISO/IEC 9646-1, Information technology, open system intercon- nection, conformance testing methodology and framework, part 1: general concepts[S].1994.
5ISO/IEC 9646-2, Information technology, open system intercon- nection, OSI conformance testing methodology and framework. part 2: Abstract test suite specifieation[S].1994.
6ISO/IEC 9646-4, Information technology, open system intercon- nection, conformance testing methodology and framework: part 4: test realization[S]. 1994.