Signalling Protocols and Switching (SPS); V Interfaces at the Digital Local Exchange (LE); V5.1 Interface for the Support of Access Network (AN); Part 7: Test Suite Structure and Test Purposes (TSS&TP) Specification for the Data Link Layer
This seventh part of ETS 300 324 contains the Test Suite Structure (TSS) and Test Purposes (TPs) for the Data Link Layer (DLL) of the V5.1 interface. The conformance tests in this ETS provide a high probability of inter-operability of the DLL between an Access Network (AN) and a Local Exchange (LE) infrastructure. This ETS covers only the procedures described in ETS 300 324-1 [1] which are based upon ETS 300 125 [3]. ISO/IEC 9646-1 [5] is used as the basis for the methodology of conformance testing. ETS 300 324-1 [1] defines the sublayers of the DLL@ i.e. Link Access Protocol for V5 interface (LAPV5) Data Link sublayer (LAPV5-DL)@ LAPV5 Envelope Function sublayer (LAPV5-EF) and the mapping function (refer to ETS 300 324-1 [1]@ figure 6 which illustrates this approach). Regarding the conformance testing these sublayer functions are not tested separately. The test purposes defined in clause 5 cover testing of the LAPV5-DL (control protocol only)@ LAPV5-EF and the mapping function. The AN frame relay function is tested in co-operation with a generic test of an Integrated Services Digital Network (ISDN) D-channel. The limitation of the DLL test to the Control DL is based on the assumption that the Public Switched Telephone Network (PSTN) DL implementation is identical with the Control DL implementation. This needs to be declared by the Implementation Under Test (IUT) supplier. Otherwise@ the TPs defined for the Control DL may be used for the PSTN DL as well