SIST EN 300 324-8 V2.1.1:2005

• Abstract:

  Corrections of errors in layer 2 ATS discovered as side-effect of work in STF on layer 3.

• Status: Published
• Publication Date: 31-Dec-2004
• ICS: 33.040.30 - Switching and signalling systems
• Technical Committee: SPN - Services and Protocols for Networks
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Jan-2005
• Due Date: 01-Jan-2005
• Completion Date: 01-Jan-2005
• Mandate: BC-T-340
• Ref Project: ETSI EN 300 324-8 V2.1.1 (2000-05) - V interfaces at the digital Local Exchange (LE); V5.1 interface for the support of Access Network (AN); Part 8: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the data link layer

SIST EN 300 324-8 V2.1.1:2005 is the SIST adoption of the ETSI European Standard for the V5.1 interface at the digital Local Exchange (LE). It specifies the Abstract Test Suite (ATS), the Abstract Test Method (ATM), and a partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma for the data link layer (DLL). In practice, it is used to test V5.1 implementations in Access Network (AN) and LE equipment for conformance and likely interoperability.

What does SIST EN 300 324-8 V2.1.1:2005 specify?

SIST EN 300 324-8 V2.1.1:2005 specifies conformance testing material for the V5.1 DLL. The document is organized around the test method, ATS conventions, the ATS itself, and a partial PIXIT proforma.

The main clauses cover:

• the abstract test method and point of control and observation
• untestable test purposes
• ATS naming and implementation conventions
• documentation rules for the TTCN test suite

Annex	What it covers
Annex A	Abstract Test Suite (ATS) for DLL testing
Annex B	Partial PIXIT proforma

The ATS is based on the Test Purposes from Part 7, so this part turns the declared test purposes into concrete test cases and supporting parameters.

What are the key requirements of SIST EN 300 324-8 V2.1.1:2005?

SIST EN 300 324-8 V2.1.1:2005 is mainly a test specification, so its key points are the required test method, test structure, and test data conventions. These matter because they determine how a lab sets up the test system and how test results are interpreted.

Test method and access point

Clause 4 says the DLL conformance tests use the remote test method, with the embedded variant where network layer functions are also involved. The point of control and observation is on the PSAP, and a remote Lower Tester (LT1) controls and observes the Implementation Under Test (IUT). In practice, this tells a test lab where to connect and what traffic to watch.

AN and LE testing

Clause 4.3.1 adapts the ATS for both AN and LE testing. The CR bit is handled as a test suite parameter so the same ATS can be used in both directions, and the document notes that the Frame Relay function is only implemented in the AN. For a buyer or engineer, this means the same test material supports both roles, but with parameterized behavior.

Test-case execution and verdict handling

Clause 4.3 explains that invalid and inopportune test cases can generate many MDL-ERROR-IND indications during execution, and some tests use network layer procedures to test DLL behavior. The document also recommends a test execution order by protocol group and test group to make result analysis easier. That helps labs run and review suites in a repeatable way.

Untestable test purposes

Clause 5 lists test purposes that are not implemented in the ATS because they require load conditions. This is important for planning, because it shows which declared purposes are outside the scope of the executable suite.

ATS conventions

Clause 6 defines naming, implementation, and documentation conventions for the TTCN ATS. It covers how identifiers are formed for declarations, test cases, test steps, constants, timers, and verdict labels, and it explains how base constraints and modified constraints are structured. These conventions matter when maintaining the suite or translating it into an executable TTCN environment.

ATS content and parameterization

Clause 6.2 describes how ASPs and PDUs are parameterized and how special NWK PDUs are used in tests, for example to check maximum frame length, frame length exceedance, or acceptance of specific network data. In practice, this shows the kind of stimulus and responses the suite expects from the IUT.

What terms does SIST EN 300 324-8 V2.1.1:2005 define?

• Access Network (AN) - the network side of the V5.1 interface that connects toward the Local Exchange.
• Abstract Test Suite (ATS) - the formal TTCN test suite that realizes the test purposes as executable or translatable test cases.
• Abstract Test Method (ATM) - the test setup and observation method used to apply the ATS.
• Data Link Layer (DLL) - the layer being tested in this part of the V5.1 interface.
• Implementation Under Test (IUT) - the implementation being exercised by the test suite.
• Protocol Implementation eXtra Information for Testing (PIXIT) - the implementation-specific information the tester needs before running the ATS.
• Point of Control and Observation (PCO) - the interface point where the test system sends and observes events.
• Tree and Tabular Combined Notation (TTCN) - the notation used to define the ATS.

Who uses SIST EN 300 324-8 V2.1.1:2005?

SIST EN 300 324-8 V2.1.1:2005 is used by test laboratories, equipment manufacturers, and conformance teams working on V5.1 interface implementations. It is relevant to engineers validating AN and LE products, quality managers preparing interoperability evidence, and buyers who need to know what test artifacts a supplier can provide.

The document is also useful for protocol developers working on LAPV5-EF and LAPV5-DL behavior, because it shows how the test suite exercises DLL functions and which PIXIT values must be supplied.

What changed in SIST EN 300 324-8 V2.1.1:2005 from the previous edition?

The scope states that this version corrects errors in the layer 2 ATS found as a side-effect of work in STF on layer 3. The history also shows it as the V2.1.1 publication of Part 8.

Which standards are used with SIST EN 300 324-8 V2.1.1:2005?

• ETSI ETS 300 324-1 - provides the V5.1 interface specification used as the protocol basis.
• ETSI ETS 300 324-2 - provides the Protocol Implementation Conformance Statement (PICS) proforma.
• ETSI ETS 300 324-7 - provides the Test Suite Structure and Test Purposes (TSS & TP) for the data link layer.
• ISO 7498 - supplies the OSI basic reference model used for layer terminology.
• ISO/IEC 9646-1, -2, -3, -5 - provide the conformance testing framework, ATS specification method, TTCN notation, and laboratory/client requirements.
• ETSI ETS 300 406 and ETSI ETR 141 - provide methodology and TTCN style guidance used in developing the ATS.

What does the SIST EN 300 324-8 V2.1.1:2005 document contain?

Annex A contains the ATS in both TTCN.GR and TTCN.MP forms, so the suite can be reviewed and processed with TTCN tools. Annex B contains the partial PIXIT proforma, including identification fields, test laboratory and client information, SUT and IUT details, parameter values, timer values, procedural information, and implicit send events.

The main text also includes tables for AN-LE parameters, unimplemented test purposes, address and timer values, and PIXIT information. These tables support test configuration, execution, and result recording.

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Vmesniki V pri digitalnih krajevnih centralah (LE) – Vmesnik V5.1 za podporo dostopovnemu omrežju (AN) – 8. del: Abstraktni preskušalni niz (ATS) in delna dodatna informacija za preskušanje izvedbe protokola (PIXIT) – Proforma specifikacija za podatkovno povezovalno plastV interfaces at the digital Local Exchange (LE); V5.1 interface for the support of Access Network (AN); Part 8: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the data link layer33.040.30Komutacijski in signalizacijski sistemSwitching and signalling systemsICS:Ta slovenski standard je istoveten z:EN 300 324-8 Version 2.1.1SIST EN 300 324-8 V2.1.1:2005en01-januar-2005SIST EN 300 324-8 V2.1.1:2005SLOVENSKI
STANDARD
ETSIEN300324-8V2.1.1(2000-05)EuropeanStandard(Telecommunicationsseries)VinterfacesatthedigitalLocalExchange(LE);V5.1interfaceforthesupportofAccessNetwork(AN);Part8:AbstractTestSuite(ATS)andpartialProtocolImplementationeXtraInformationforTesting(PIXIT)proformaspecificationforthedatalinklayerSIST EN 300 324-8 V2.1.1:2005

ETSIETSIEN300324-8V2.1.1(2000-05)2ReferenceREN/SPAN-09107-8-1KeywordsAN,ATS,ISDN,layer2,LE,PIXIT,PSTN,testing,Vinterface,V5interfaceETSI650RoutedesLuciolesF-06921SophiaAntipolisCedex-FRANCETel.:[phone]Fax:[phone]SiretN°34862356200017-NAF742CAssociationàbutnonlucratifenregistréeàlaSous-PréfecturedeGrasse(06)N°7803/88ImportantnoticeIndividualcopiesofthepresentdocumentcanbedownloadedfrom:http://www.etsi.orgThepresentdocumentmaybemadeavailableinmorethanoneelectronicversionorinprint.Inanycaseofexistingorperceiveddifferenceincontentsbetweensuchversions,thereferenceversionisthePortableDocumentFormat(PDF).Incaseofdispute,thereferenceshallbetheprintingonETSIprintersofthePDFversionkeptonaspecificnetworkdrivewithinETSISecretariat.Usersofthepresentdocumentshouldbeawarethatthedocumentmaybesubjecttorevisionorchangeofstatus.InformationonthecurrentstatusofthisandotherETSIdocumentsisavailableathttp://www.etsi.org/tb/status/Ifyoufinderrorsinthepresentdocument,sendyourcommentto:[e-mail]opartmaybereproducedexceptasauthorizedbywrittenpermission.Thecopyrightandtheforegoingrestrictionextendtoreproductioninallmedia.©EuropeanTelecommunicationsStandardsInstitute2000.Allrightsreserved.SIST EN 300 324-8 V2.1.1:2005

ETSIETSIEN300324-8V2.1.1(2000-05)3ContentsIntellectualPropertyRights.4Foreword.41Scope.52References.53Definitionsandabbreviations.63.1Definitions.63.2Abbreviations.74Abstracttestmethod.84.1ATM.84.2DLLprotocoltesting.84.3Executionoftestcases.94.3.1AN-LEtesting.94.3.2Handlingoferrorindications.94.3.3Testcaseexecutionsequence.95Untestabletestpurposes.96Abstracttestsuiteconventions.106.1Namingconventions.106.1.1Declarationpart.106.1.2Constraintpart.116.1.3Dynamicpart.116.1.3.1Testcases.116.1.3.2Teststeps.116.1.3.3Generalaspects.116.1.4ATSabbreviations.126.2Implementationconventions.126.2.1Declarationpart.126.2.2Constraintpart.126.2.3Dynamicpart.136.2.4Documentation.14AnnexA(normative):AbstractTestSuite(ATS)forDLLtesting.15A.1TheTTCNGraphicalform(TTCN.GR).15A.2TheTTCNMachineProcessableform(TTCN.MP).15AnnexB(normative):PartialPIXITproforma.16B.1Introduction.16B.2PIXITproforma.16B.2.1Identificationsummary.16B.2.2Abstracttestsuitesummary.16B.2.3Testlaboratory.16B.2.4Client.17B.2.5SUT.17B.2.6Protocollayerinformation.18B.2.6.1Protocolidentification.18B.2.6.2IUTinformation.18History.20SIST EN 300 324-8 V2.1.1:2005

ETSIETSIEN300324-8V2.1.1(2000-05)4IntellectualPropertyRightsIPRsessentialorpotentiallyessentialtothepresentdocumentmayhavebeendeclaredtoETSI.TheinformationpertainingtotheseessentialIPRs,ifany,ispubliclyavailableforETSImembersandnon-members,andcanbefoundinSR000314:"IntellectualPropertyRights(IPRs);Essential,orpotentiallyEssential,IPRsnotifiedtoETSIinrespectofETSIstandards",whichisavailablefromtheETSISecretariat.LatestupdatesareavailableontheETSIWebserver(http://www.etsi.org/ipr).PursuanttotheETSIIPRPolicy,noinvestigation,includingIPRsearches,hasbeencarriedoutbyETSI.NoguaranteecanbegivenastotheexistenceofotherIPRsnotreferencedinSR000314(ortheupdatesontheETSIWebserver)whichare,ormaybe,ormaybecome,essentialtothepresentdocument.ForewordThisEuropeanStandard(Telecommunicationsseries)hasbeenproducedbyETSITechnicalCommitteeServicesandProtocolsforAdvancedNetworks(SPAN).Thepresentdocumentispart8ofamulti-partstandardcoveringtheV5.1interfaceasdescribedbelow:Part1:"V5.1interfacespecification";Part2:"ProtocolImplementationConformanceStatement(PICS)proforma";Part3:"TestSuiteStructureandTestPurposes(TSS&TP)specificationforthenetworklayer(ANside)";Part4:"AbstractTestSuite(ATS)andpartialProtocolImplementationeXtraInformationforTesting(PIXIT)proformaspecificationforthenetworklayer(ANside)";Part5:"TestSuiteStructureandTestPurposes(TSS&TP)specificationforthenetworklayer(LEside)";Part6:"AbstractTestSuite(ATS)andpartialProtocolImplementationeXtraInformationforTesting(PIXIT)proformaspecificationforthenetworklayer(LEside)";Part7:"TestSuiteStructureandTestPurposes(TSS&TP)specificationforthedatalinklayer";Part8:"AbstractTestSuite(ATS)andpartialProtocolImplementationeXtraInformationforTesting(PIXIT)proformaspecificationforthedatalinklayer";Part9:"Testspecificationsforthephysicallayer".NationaltranspositiondatesDateofadoptionofthisEN:28April2000DateoflatestannouncementofthisEN(doa):31July2000DateoflatestpublicationofnewNationalStandardorendorsementofthisEN(dop/e):31January2001DateofwithdrawalofanyconflictingNationalStandard(dow):31January2001SIST EN 300 324-8 V2.1.1:2005

ETSIETSIEN300324-8V2.1.1(2000-05)51ScopeThiseighthpartofEN300324containstheAbstractTestSuite(ATS)aswellastheAbstractTestMethod(ATM)andthepartialProtocolImplementationeXtraInformationforTesting(PIXIT)proformafortheDataLinkLayer(DLL)oftheV5.1interface.TheobjectiveofthepresentdocumentistoprovideanATScontainingconformancetestswhichgiveahighprobabilityofinter-operabilityofanAccessNetwork(AN)andaLocalExchange(LE)fromdifferentmanufacturersovertheV5.1interface.ISO/IEC9646-1[5]andISO/IEC9646-2[6]areusedasthebasisforthetestmethodology.TheATSisdefinedusingtheTreeandTabularCombinedNotation(TTCN)accordingtoISO/IEC9646-3[7].TheATSinannexAdescribesasetofTestCases(TCs)whicharebasedontheTestPurposes(TPs)specifiedinETS300324-7[3].TheTCsprovidetheimplementationoftheTPsandcanbeconvertedintoanexecutabletestsuitebyusingavailableTTCNtranslatorsandthecorrespondingtools.AnnexBprovidesthepartialPIXITproforma.2ReferencesThefollowingdocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthepresentdocument.• Referencesareeitherspecific(identifiedbydateofpublication,editionnumber,versionnumber,etc.)ornon-specific.• Foraspecificreference,subsequentrevisionsdonotapply.• Foranon-specificreference,thelatestversionapplies.• Anon-specificreferencetoanETSshallalsobetakentorefertolaterversionspublishedasanENwiththesamenumber.[1]ETSIETS300324-1(1994)includingamendmentA1:"VinterfacesatthedigitalLocalExchange(LE);V5.1interfaceforthesupportofAccessNetwork(AN);Part1:V5.1interfacespecification".[2]ETSIETS300324-2(1994):"VinterfacesatthedigitalLocalExchange(LE);V5.1interfaceforthesupportofAccessNetwork(AN);Part2:ProtocolImplementationConformanceStatement(PICS)proforma".[3]ETSIETS300324-7(1999):"VinterfacesatthedigitalLocalExchange(LE);V5.1interfaceforthesupportofAccessNetwork(AN);Part7:TestSuiteStructureandTestPurposes(TSS&TP)specificationforthedatalinklayer".[4]ISO7498:"Informationprocessingsystems;OpenSystemsInterconnection;BasicReferenceModel".[5]ISO/IEC9646-1:"Informationtechnology;OpenSystemsInterconnection;Conformancetestingmethodologyandframework;Part1:Generalconcepts".[6]ISO/IEC9646-2:"Informationtechnology;OpenSystemsInterconnection;Conformancetestingmethodologyandframework;Part2:Abstracttestsuitespecification".[7]ISO/IEC9646-3:"Informationtechnology;OpenSystemsInterconnection;Conformancetestingmethodologyandframework;Part3:TheTreeandTabularCombinedNotation(TTCN)".[8]ISO/IEC9646-5:"Informationtechnology;OpenSystemsInterconnection;Conformancetestingmethodologyandframework;Part5:Requirementsontestlaboratoriesandclientsfortheconformanceassessmentprocess".SIST EN 300 324-8 V2.1.1:2005

ETSIETSIEN300324-8V2.1.1(2000-05)6[9]ETSIETS300406:"MethodsforTestingandSpecification(MTS);Protocolandprofileconformancetestingspecifications;Standardizationmethodology".[10]ETSIETR141:"MethodsforTestingandSpecification(MTS);Protocolandprofileconformancetestingspecifications;TheTreeandTabularCombinedNotation(TTCN)styleguide".3Definitionsandabbreviations3.1DefinitionsForthepurposesofthepresentdocument,thefollowingtermsanddefinitionsapply:abstracttestcase:refertoISO/IEC9646-1[5]NOTE:Inthepresentdocument,thecommonlyusedtermTCisappliedinthesamewayasATC.abstracttestsuite:refertoISO/IEC9646-1[5]datalinklayer:refertoISO7498[4]embeddedvariant:refertoISO/IEC9646-2[6]implementationundertest:refertoISO/IEC9646-1[5]lowertester:refertoISO/IEC9646-1[5]networklayer:refertoISO7498[4]notionalUT:upperlayersoftheSUTareusedtorealizethefunctionsoftheuppertester,withoutanyadditionalmechanismbeinginstalledphysicallayer:refertoISO7498[4]PICSproforma:refertoISO/IEC9646-1[5]PIXITproforma:refertoISO/IEC9646-1[5]pointofcontrolandobservation:refertoISO/IEC9646-1[5]ProtocolImplementationConformanceStatement(PICS):refertoISO/IEC9646-1[5]ProtocolImplementationeXtraInformationforTesting(PIXIT):refertoISO/IEC9646-1[5]remotetestmethod:refertoISO/IEC9646-2[6]systemundertest:refertoISO/IEC9646-1[5]testpurpose:refertoISO/IEC9646-1[5]SIST EN 300 324-8 V2.1.1:2005

ETSIETSIEN300324-8V2.1.1(2000-05)73.2AbbreviationsForthepurposesofthepresentdocument,thefollowingabbreviationsapply:ANAccessNetworkASPAbstractServicePrimitiveATMAbstractTestMethodATSAbstractTestSuiteBIInvalidBehaviourBOInopportuneBehaviourBVValidBehaviourCACapabilitytestDLLDataLinkLayerIDIdentifierIEInformationElementIEIInformationElementIdentifierISDNIntegratedServicesDigitalNetworkITbasicInterconnectionTestIUTImplementationUnderTestLAPV5LinkAccessProtocolforV5interfaceLAPV5-DLLAPV5DataLinksublayerLAPV5-EFLAPV5EnvelopeFunctionsublayerLELocalExchangeLT1LowerTester1NWKNetwork(Layer)PCOPointofControlandObservationPDUProtocolDataUnitPHLPhysicalLayerPICSProtocolImplementationConformanceStatementPIXITProtocolImplementationeXtraInformationforTestingPSAPPHLServiceAccessPointPSTNPublicSwitchedTelephoneNetworkRXReceiverconditionSAPServiceAccessPointSAPIServiceAccessPointIdentifierSUTSystemUnderTestTCTestCaseTEITerminalEndpointIdentifierTITimerTPTestPurposeTSSTestSuiteStructureTTCNTreeandTabularCombinedNotationTXTransmitterconditionUTUpperTesterV5DLaddrV5DataLinkaddressV5DLLV5DataLinkLayerSIST EN 300 324-8 V2.1.1:2005

ETSIETSIEN300324-8V2.1.1(2000-05)84AbstracttestmethodThisclausedescribestheAbstractTestMethod(ATM)andthePointofControlandObservation(PCO)usedtotesttheDLLoftheV5.1protocol.4.1ATMPrincipally,theremotetestmethodisusedforV5DLLconformancetesting.CertainDLLTPsneedalsopartoftheNWKfunctions(e.g.Iframetransmission).Therefore,theembeddedvariantoftheremotetestmethodisapplied.4.2DLLprotocoltestingTheV5.1implementationsdonotofferadirectaccesstotheupperserviceboundary.Theremotetestmethodwaschosenbecauseanyco-ordinationprocedurescanonlybeexpressedinaninformalway.LT1:ALowerTester(LT1)islocatedinaremoteV5.1testsystem.ItcontrolsandobservesthebehavioursoftheIUT.PCO:ThePCOforDLLtestingislocatedonthePSAP.AlltesteventsatthePCOarespecifiedintermsofPH-DataASPsandDLLPDUs.AsinglePCOisdefinedforDLLtestinginordertoexchangemessagesoftheLAPV5-EFsublayeraswellasoftheLAPV5-DLsublayer.NotionalUT:ThenotionalUTincludestheNWKandsystemmanagementfunctions.V5-DLL:V5-DLLincludesLAPV5-EF,mappingfunctionandLAPV5-DL.ANtest:TotesttheLAPV5-EFprotocol,anISDNterminalshallbeconnectedtotherelevantuserport.SUTV5TestSystemV5-DLLPCO/PSAPV5-DLLPDULT1PhysicalLayerIUTServiceProvidernotionalUTPH-DataFigure1:RemotetestmethodappliedtotheV5.1DLLtestingSIST EN 300 324-8 V2.1.1:2005

ETSIETSIEN300324-8V2.1.1(2000-05)94.3Executionoftestcases4.3.1AN-LEtestingRegardingtheDLLprotocolofV5.1,theV5.1interfaceisalmostsymmetrical,exceptthattheFrameRelayfunctionisonlyimplementedintheAN.TherearetwoprotocolsubjectswhichhavetobeadaptedforLEtesting,themessagesequenceofagenericcalltotheISDNentityandthehandlingoftheCRbit.ThegenericcalltotheISDNentityisstoppedafterhavingreceivedfromtheIUTanUAresponseframeasaresponsetoapreviouslysentSABMEcommandframe.UntiltheISDNlinkinitialization,theV5.1protocolissymmetricalasonlyapoint-to-pointconnectionoverasingledatalinkisestablished(fixedTEI).TheproblemoftheCRbithandlingissolvedintheATS.TheCRbitisdefinedasatestsuiteparameterwhichallowstoinverttheCRbitforLEtesting.Table1documentsthisapproach.Table1:AN-LEparametersANLETSPX_ANTRUEFALSECR_0'0'B'1'BCR_1'1'B'0'B4.3.2HandlingoferrorindicationsDuringtheexecutionoftheDLLATS,manyMDL-ERROR-INDwillbesenttothesystemmanagementduetotheinvalidandinopportunetestcases.ItisuptotheIUTsuppliertotakethenecessaryprecautionstoavoidanyimpactonthetestresult.SometestsuseNWKprocedurestotestDLLfunctions,itisnotalwayspossibletohandletheNWKproperly.TheeffectsofsuchfaultyNWKmessagesandproceduresareoutofthescopeofthepresentdocument.ItisuptotheIUTsuppliertotakethenec
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