BS ISO 20794-6:2020 pdf free.Road vehicles—Clock extension peripheral interface (CXPI)—Transport and network layer conformance test plan.
BS ISO 20794-6 This document specifies the transport and network layer conformance test plan, which tests the transportation of diagnostic communication, node configuration data and network layer services using the service interface parameters reported by the lower OSI layers and submitted to the higher OSI layers. The transport layer and network layer conformance test plan contain the following descriptions:  concept of operation conformance test plan; transport layer protocol conformance test plan;network layer services conformance test plan; and error detection conformance test plan.The following documents are referred to in the text in such a way that some or all of their content  constitutes requirements of this document. For dated references, only the edition cited applies. Forundated references, the latest edition of the referenced document (including any amendments) applies.  ISO/IEC 7498-1, Information processing systems一Open systems interconnection – – Basic reference model ISO 20794-2:2020, Road vehicles一Clock extension peripheral interface (CXPI)一Part 2: Application layer ISO 20794-3:2020, Road vehicles一Clock extension peripheral interface (CXPI)一Part 3: Transport and network layer ISO 20794-4:2020, Road vehicles一- Clock extension peripheral interface (CXPI)一Part 4: Data link layer and physical layer.The test system set-up follows the ISO/IEC 9646-1[1] and consists of a test system and a system under test (SUT) connected via the physical medium. The test system implements an upper tester (UT]) and a lower tester (LT). The test system uses set-up parameters (see Figure 2, key 1) for testing the communication with the IUT. The UT uses the test control protocol (see Figure 2, key 2) to control the LT. The point of control and observation (PCO) functionality between the UT of the test system and the UT App test stub in the SUT is provided by direct logical access to the abstract service primitive interface [ASPs (ETSs), PCO, see dashed line in Figure 2, key 3) and the associated parameters of the OSI layers as specified in the ISO 20794 series.BS ISO 20794-6 pdf download.