What is ISO/IEC 8882-3 - X.25-DTE packet layer conformance suite testing about?
ISO/IEC 8882-3 is the third part of the multiple series that specifies a set of abstract tests for verifying that the implementation of X.25 protocols, for use by Data Terminal Equipment (DTE), conforms to the requirements of ISO/IEC 8882-3 that specify those protocols.
ISO/IEC 8882-3 defines the testing of a DTE operating at the packet layer designed to access public or private packet-switched network conforming to CCITT Recommendation X.25 (1980, 1984) or another DTE conforming to ISO 8208. The specification of test cases in executable/machine-processable TTCN is outside the scope of this part of ISO/IEC 8882.
Who is ISO/IEC 8882-3 - X.25-DTE packet layer conformance suite testing for?
ISO/IEC 8882-3 on X.25-DTE packet layer conformance suite testing is useful for:
- IT firms/industries
- IT engineers
- Telecommunication industries
- Manufacturers of the packet layer
Why should you use ISO/IEC 8882-3 - X.25-DTE packet layer conformance suite testing?
CCITT Recommendation X.25 1980 and X.25 1984 are written from the perspective of a DCE and therefore do not explicitly specify the DTE operation. However, recommended operation of DTEs is included by implication because of the need to communicate with X.25 DCEs. Tests within this part of ISO/IEC 8882 pertaining to X.25 1980 and X.25 1984 are based on the DTE operational characteristics implied by CCITT X.25.
ISO/IEC 8882-3 specifies a set of tests to evaluate Data Terminal Equipment (DTE). ISO/IEC 8882-3 include:
- Specifies a PIXIT proforma
- Describes the relationship of the PICS to the test suite
- Describes the relationship of the PIXIT to the test suite
- Specifies a set of abstract tests using TTCN Graphical notation
Overall, ISO/IEC 8882-3 provides the OSI Network Layer Service to every public network or every type of DTE and evaluates Data Terminal Equipment (DTE).