SIST EN 300 347-8 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
• Ref Project: ETSI EN 300 347-8 V2.1.1 (2000-06) - V interfaces at the digital Local Exchange (LE); V5.2 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 300 347-8 V2.1.1:2005 is the Slovenian adoption of ETSI EN 300 347-8 V2.1.1. It specifies an Abstract Test Suite (ATS) and a partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma for the data link layer of the V5.2 interface between an Access Network (AN) and a Local Exchange (LE). The document is used for conformance testing so manufacturers and test laboratories can check how well implementations should interoperate on that interface.

What does SIST EN 300 347-8 V2.1.1:2005 specify?

SIST EN 300 347-8 V2.1.1:2005 defines the testing material for the V5.2 data link layer. It gives the test method, the abstract test cases, and the PIXIT information needed to run the tests in a real lab.

The document is organized into six clauses and three annexes:

• Clause 1 Scope
• Clause 2 References
• Clause 3 Definitions and abbreviations
• Clause 4 Abstract test method
• Clause 5 Untestable test purposes
• Clause 6 Abstract test suite conventions

Annex	What it covers
Annex A	Normative Abstract Test Suite for DLL testing, in TTCN.GR and TTCN.MP form
Annex B	Normative partial PIXIT proforma
Annex C	Informative merging procedure for V5.1 ATS and V5.2 ATS additions

The scope states that the aim is to provide conformance tests with a high probability of interoperability between AN and LE equipment from different manufacturers. The ATS is based on ISO/IEC 9646-1 and ISO/IEC 9646-2, and it is written in Tree and Tabular Combined Notation (TTCN) according to ISO/IEC 9646-3.

What are the key requirements of SIST EN 300 347-8 V2.1.1:2005?

SIST EN 300 347-8 V2.1.1:2005 is mainly a testing specification, so its key content is the chosen test method, the way test cases are run, and the conventions used to build the ATS.

• Clause 4 uses the remote test method, with an embedded variant for some data link layer test purposes. In practice, this means the test system controls and observes the implementation from a remote point instead of direct access to the upper service boundary.
• Clause 4 defines a single Point of Control and Observation (PCO) at the PSAP, and test events at that point are expressed as PH-Data service primitives and DLL protocol data units. This matters because it fixes where the test system looks for behaviour and what kind of signals it exchanges.
• Clause 4.3.1 explains how the ATS is adapted for AN and LE testing. The CR bit is parameterized so the same suite can be used in both roles, and the AT S reflects that the V5.2 interface is almost symmetrical except for Frame Relay functions in the AN.
• Clause 4.3.2 warns that many invalid or inopportune cases trigger MDL-ERROR-IND indications during testing. For users, this means the implementation supplier must prepare the system so those indications do not distort the test result.
• Clause 4.3.3 states that the Link control FSM must communicate with the Physical Layer during link identification. The Lower Tester implementation therefore has to support that communication during execution.
• Clause 4.3.4 gives a recommended execution order: first the LAPV5-EF protocol group, then LAPV5-DL, with test groups in the stated order. This helps teams analyze results consistently.
• Clause 5 lists unimplemented test purposes that depend on load conditions. The ATS therefore gives broad coverage, but some load-dependent purposes are left out because they require a target system that can generate load.
• Clause 6 sets the naming and implementation conventions used in the TTCN ATS. That matters for maintenance, translation, and reading logs because it standardizes identifiers, verdict labels, constraints, and test-step structure.

What terms does SIST EN 300 347-8 V2.1.1:2005 define?

• Abstract Test Suite (ATS) - The defined set of abstract test cases used to check conformance.
• Abstract Test Method (ATM) - The test approach chosen for observing and controlling the implementation under test.
• Protocol Implementation eXtra Information for Testing (PIXIT) - Implementation-specific information that must be supplied before testing can be run.
• Point of Control and Observation (PCO) - The place where the test system sends stimuli and observes responses.
• Implementation Under Test (IUT) - The implementation being checked against the ATS.
• System Under Test (SUT) - The complete system configuration being tested, including the IUT and its environment.
• Tree and Tabular Combined Notation (TTCN) - The notation used to write the ATS in a structured, executable-friendly form.

Who uses SIST EN 300 347-8 V2.1.1:2005?

SIST EN 300 347-8 V2.1.1:2005 is used by test laboratories, telecom equipment manufacturers, and conformance engineers working on V5.2 interfaces. It is also relevant to quality teams and buyers who need to verify that AN and LE implementations can be tested in a consistent way. In practice, they use it to prepare PIXIT data, configure test benches, execute TTCN test cases, and interpret conformance results.

Which standards are used with SIST EN 300 347-8 V2.1.1:2005?

The document is used together with several companion standards:

• ETSI EN 300 347-1 - the V5.2 interface specification that defines the base interface.
• ETSI EN 300 347-2 - the Protocol Implementation Conformance Statement (PICS) proforma.
• ETSI ETS 300 347-7 - the data link layer Test Suite Structure and Test Purposes source for the ATS.
• ETSI ETS 300 324-8 - the V5.1 data link ATS and PIXIT proforma used with Annex A to build the complete V5.2 ATS.
• ISO/IEC 9646-1, 9646-2, 9646-3, 9646-5 - the conformance testing framework, ATS rules, TTCN notation, and test laboratory/client requirements.
• ETSI ETS 300 406 and ETR 141 - methodology and TTCN style guidance used when defining the ATS.

What does the SIST EN 300 347-8 V2.1.1:2005 document contain?

Annex A provides the abstract test suite itself in both graphical and machine-processable TTCN forms, so it can be turned into executable test software. Annex B provides the partial PIXIT proforma, including identification data, test laboratory and client fields, SUT details, protocol-layer parameters, timer values, procedural information, and implicit send events. Annex C explains how to merge the V5.1 ATS with the V5.2 additions to form a complete V5.2 ATS.

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Vmesniki V pri digitalnih krajevnih centralah (LE) – Vmesnik V5.2 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); V5.2 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 300 347-8 Version 2.1.1SIST EN 300 347-8 V2.1.1:2005en01-januar-2005SIST EN 300 347-8 V2.1.1:2005SLOVENSKI
STANDARD
ETSIEN300347-8V2.1.1(2000-06)EuropeanStandard(Telecommunicationsseries)VinterfacesatthedigitalLocalExchange(LE);V5.2interfaceforthesupportofAccessNetwork(AN);Part8:AbstractTestSuite(ATS)andpartialProtocolImplementationeXtraInformationforTesting(PIXIT)proformaspecificationforthedatalinklayerSIST EN 300 347-8 V2.1.1:2005

ETSIETSIEN300347-8V2.1.1(2000-06)2ReferenceREN/SPAN-09108-8-1KeywordsVinterface,V5interface,ISDN,LE,ATS,PIXIT,testing,layer2,ANETSI650RoutedesLuciolesF-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 300 347-8 V2.1.1:2005

ETSIETSIEN300347-8V2.1.1(2000-06)3ContentsIntellectualPropertyRights.5Foreword.51Scope.62References.63Definitionsandabbreviations.73.1Definitions.73.2Abbreviations.74Abstracttestmethod.84.1ATM.84.2DLLprotocoltesting.84.3Executionoftestcases.94.3.1AN-LEtesting.94.3.2Handlingoferrorindications.94.3.3LinkcontrolFSM-PhysicalLayerconnection.94.3.4Testcaseexecutionsequence.95Untestabletestpurposes.105.1ListofunimplementedTPs.106Abstracttestsuiteconventions.106.1Namingconventions.106.1.1Declarationpart.106.1.2Constraintpart.116.1.3Dynamicpart.116.1.3.1Testcases.116.1.3.2Teststeps.116.1.3.3Generalaspects.126.1.4ATSabbreviations.126.2Implementationconventions.126.2.1Declarationpart.126.2.2Constraintpart.136.2.3Dynamicpart.14AnnexA(normative):AbstracttestsuiteforDLLtesting.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.18SIST EN 300 347-8 V2.1.1:2005

ETSIETSIEN300347-8V2.1.1(2000-06)4AnnexC(informative):MergingprocedureofV5.1ATSandV5.2ATSadditions.20History.21SIST EN 300 347-8 V2.1.1:2005

ETSIETSIEN300347-8V2.1.1(2000-06)5IntellectualPropertyRightsIPRsessentialorpotentiallyessentialtothepresentdocumentmayhavebeendeclaredtoETSI.TheinformationpertainingtotheseessentialIPRs,ifany,ispubliclyavailableforETSImembersandnon-members,andcanbefoundinETSISR000314:"IntellectualPropertyRights(IPRs);Essential,orpotentiallyEssential,IPRsnotifiedtoETSIinrespectofETSIstandards",whichisavailablefromtheETSISecretariat.LatestupdatesareavailableontheETSIWebserver(http://www.etsi.org/ipr).PursuanttotheETSIIPRPolicy,noinvestigation,includingIPRsearches,hasbeencarriedoutbyETSI.NoguaranteecanbegivenastotheexistenceofotherIPRsnotreferencedinETSISR000314(ortheupdatesontheETSIWebserver)whichare,ormaybe,ormaybecome,essentialtothepresentdocument.ForewordThisEuropeanStandard(Telecommunicationsseries)hasbeenproducedbyETSITechnicalCommitteeServicesandProtocolsforAdvancedNetworks(SPAN).Thepresentdocumentispart8ofamulti-partstandardcoveringtheV5.1interfaceasdescribedbelow:Part1:"V5.2interfacespecification";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";Part7:"TestSuiteStructureandTestPurposes(TSS&TP)specificationforthedatalinklayer";Part8:"AbstractTestSuite(ATS)andpartialProtocolImplementationeXtraInformationforTesting(PIXIT)proformaspecificationforthedatalinklayer";Part9:"Testspecificationforthephysicallayer".NationaltranspositiondatesDateofadoptionofthisEN:5May2000DateoflatestannouncementofthisEN(doa):31August2000DateoflatestpublicationofnewNationalStandardorendorsementofthisEN(dop/e):28February2001DateofwithdrawalofanyconflictingNationalStandard(dow):28February2001SIST EN 300 347-8 V2.1.1:2005

ETSIETSIEN300347-8V2.1.1(2000-06)61ScopeThiseighthpartofEN300347containstheAbstractTestSuite(ATS)aswellastheAbstractTestMethod(ATM)andthepartialProtocolImplementationeXtraInformationforTesting(PIXIT)proformafortheDataLinkLayer(DLL)oftheV5.2interface.TheobjectiveofthepresentdocumentistoprovideanATScontainingconformancetestswhichgiveahighprobabilityofinter-operabilityofanAccessNetwork(AN)andaLocalExchange(LE)fromdifferentmanufacturersovertheV5.2interface.ISO/IEC9646-1[8]andISO/IEC9646-2[9]areusedasthebasisforthetestmethodology.TheATSisdefinedusingtheTreeandTabularCombinedNotation(TTCN)accordingtoISO/IEC9646-3[10].TheATSinannexAdescribesasetofTestCases(TCs)whicharebasedontheTestPurposes(TPs)specifiedinETS300347-7[7](whichisanextensionofETS300324-7[3]).TheTCsprovidetheimplementationoftheTPsandcanbeconvertedintoanexecutabletestsuitebyusingavailableTTCNtranslatorsandthecorrespondingtools.AnnexBprovidesthepartialPIXITproforma.ThepresentdocumentneedstobeusedinconjunctionwithETS300324-8[4].TocreateacompleteV5.2ATS,theV5.1ATScontainedinETS300324-8[4]andtheV5.2ATSadditionscontainedinannexAofthepresentdocumentneedtobemerged.AnnexCgivesassistancewiththisprocedure.2ReferencesThefollowingdocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthepresentdocument.• Referencesareeitherspecific(identifiedbydateofpublication,editionnumber,versionnumber,etc.)ornon-specific.• Foraspecificreference,subsequentrevisionsdonotapply.• Foranon-specificreference,thelatestversionapplies.• Anon-specificreferencetoanETSshallalsobetakentorefertolaterversionspublishedasanENwiththesamenumber.[1]ETSIEN300324-1:"VinterfacesatthedigitalLocalExchange(LE);V5.1interfaceforthesupportofAccessNetwork(AN);Part1:V5.1interfacespecification".[2]ETSIETS300324-5(1999):"VinterfacesatthedigitalLocalExchange(LE);V5.1interfaceforthesupportofAccessNetwork(AN);Part5:TestSuiteStructureandTestPurposes(TSS&TP)specificationforthenetworklayer(LEside)".[3]ETSIETS300324-7(1999):"VinterfacesatthedigitalLocalExchange(LE);V5.1interfaceforthesupportofAccessNetwork(AN);Part7:TestSuiteStructureandTestPurposes(TSS&TP)specificationforthedatalinklayer".[4]ETSIETS300324-8(1999):"VinterfacesatthedigitalLocalExchange(LE);V5.1interfaceforthesupportofAccessNetwork(AN);Part8:AbstractTestSuite(ATS)andpartialProtocolImplementationeXtraInformationforTesting(PIXIT)proformaspecificationforthedatalinklayer".[5]ETSIETS300347-1(1994)includingamendmentA1:"VinterfacesatthedigitalLocalExchange(LE);V5.2interfaceforthesupportofAccessNetwork(AN);Part1:V5.2interfacespecification".[6]ETSIEN300347-2:"VinterfacesatthedigitalLocalExchange(LE);V5.2interfaceforthesupportofAccessNetwork(AN);Part2:ProtocolImplementationConformanceStatement(PICS)proformaspecification".SIST EN 300 347-8 V2.1.1:2005

ETSIETSIEN300347-8V2.1.1(2000-06)7[7]ETSIETS300347-7(1999):"VinterfacesatthedigitalLocalExchange(LE);V5.2interfaceforthesupportofAccessNetwork(AN);Part7:TestSuiteStructureandTestPurposes(TSS&TP)specificationforthedatalinklayer".[8]ISO/IEC9646-1:"InformationTechnology-OpenSystemsInterconnection-Conformancetestingmethodologyandframework-Part1:Generalconcepts".[9]ISO/IEC9646-2:"InformationTechnology-OpenSystemsInterconnection-Conformancetestingmethodologyandframework-Part2:Abstracttestsuitespecification".[10]ISO/IEC9646-3:"InformationTechnology-OpenSystemsInterconnection-Conformancetestingmethodologyandframework-Part3:TheTreeandTabularCombinedNotation(TTCN)".[11]ISO/IEC9646-5:"InformationTechnology-OpenSystemsInterconnection-Conformancetestingmethodologyandframework-Part5:Requirementsontestlaboratoriesandclientsfortheconformanceassessmentprocess".[12]ETSIETS300406:"MethodsforTestingandSpecification(MTS);Protocolandprofileconformancetestingspecifications;Standardizationmethodology".[13]ETSIETR141:"MethodsforTestingandSpecification(MTS);Protocolandprofileconformancetestingspecifications;TheTreeandTabularCombinedNotation(TTCN)styleguide".[14]Void.[15]ETSIETS300347-8:"VinterfacesatthedigitalLocalExchange(LE);V5.2interfaceforthesupportofAccessNetwork(AN);Part8:AbstractTestSuite(ATS)andpartialProtocolImplementationeXtraInformationforTesting(PIXIT)proformaspecificationforthedatalinklayer".3Definitionsandabbreviations3.1DefinitionsForthepurposesofthepresentdocument,thetermsanddefinitionsgiveninETS300324-8[4]apply.3.2AbbreviationsForthepurposesofthepresentdocument,thefollowingabbreviationsapply:ANAccessNetworkASPAbstractServicePrimitiveATMAbstractTestMethodATSAbstractTestSuiteBIInvalidBehaviourBOInopportuneBehaviourBVValidBehaviourCACapabilitytestDLLDataLinkLayerFSMFiniteStateMachineIDInterfaceidentifierISDNIntegratedServicesDigitalNetworkITbasicInterconnectionTestIUTImplementationUnderTestLAPV5LinkAccessProtocolforV5interfaceLAPV5-DLLAPV5DataLinksublayerLAPV5-EFLAPV5EnvelopeFunctionsublayerLELocalExchangeLT1LowerTester1SIST EN 300 347-8 V2.1.1:2005

ETSIETSIEN300347-8V2.1.1(2000-06)8NWKNetworkLayerPCOPointofControlandObservationPDUProtocolDataUnitPHLPhysicalLayerPICSProtocolImplementationConformanceStatementPIXITProtocolImplementationeXtranInformationforTestingPSAPPHLServiceAccessPointPSTNPublicSwitchedTelephoneNetworkSAPServiceAccessPointSUTSystemUnderTestTCTestCaseTEITerminalEndpointIdentifierTITimerTPTestPurposeTTCNTreeandTabularCombinedNotationUTUpperTesterV5DLLV5DataLinkLayer4AbstracttestmethodThisclausedescribestheAbstractTestMethod(ATM)andthePointofControlandObservation(PCO)usedtotesttheDLLoftheV5.2protocol.4.1ATMPrincipally,theremotetestmethodisusedforV5DLLconformancetesting.CertainDLLTPsneedalsopartoftheNWKfunctions(e.g.Iframetransmission).Therefore,theembeddedvariantoftheremotetestmethodisapplied.4.2DLLprotocoltestingTheV5implementationsdonotofferadirectaccesstotheupperserviceboundary.Theremotetestmethodwaschosenbecauseanyco-ordinationprocedurescanonlybeexpressedinaninformalway.SUTV5TestSystemV5-DLLPCO/PSAPV5-DLLPDULT1PhysicalLayerIUTServiceProvidernotionalUTPH-DataFigure1:RemotetestmethodappliedtotheV5.1DLLtestingSIST EN 300 347-8 V2.1.1:2005

ETSIETSIEN300347-8V2.1.1(2000-06)9LT1:ALowerTester(LT1)islocatedinaremoteV5testsystem.ItcontrolsandobservesthebehavioursoftheIUT.PCO:ThePCOforDLLtestingislocatedonthePSAP.AlltesteventsatthePCOarespecifiedintermsofPH-DataASPsandDLLPDUs.AsinglePCOisdefinedforDLLtestinginordertoexchangemessagesoftheLAPV5-EFsublayeraswellasoftheLAPV5-DLsublayer.NotionalUT:ThenotionalUTincludestheNWKandSystemManagementfunctions.V5-DLL:V5-DLLincludesLAPV5-EF,mappingfunctionandLAPV5-DL.ANtest:TotesttheLAPV5-EFprotocol,anISDNterminalshallbeconnectedtotherelevantuserport.4.3Executionoftestcases4.3.1AN-LEtestingRegardingtheDLLprotocolofV5.2,theV5.2interfaceisalmostsymmetrical,exceptthattheFrameRelayfunctionisonlyimplementedintheAN.TherearetwoprotocolsubjectswhichhavetobeadaptedforLEtesting,themessagesequenceofagenericcalltotheISDNentityandthehandlingoftheCRbit.ThegenericcalltotheISDNentityisstoppedafterhavingreceivedfromtheIUTanUAresponseframeasaresponsetoapreviouslysentSABMEcommandframe.UntiltheISDNlinkinitializationtheV5.2protocolissymmetricalasonlyapoint-to-pointconnectionoverasingledatalinkisestablished(fixedTEI).TheproblemoftheCRbithandlingissolvedintheATS.TheCRbitisdefinedasatestsuiteparameterwhichallowstoinverttheCRbitforLEtesting.Table1documentsthisapproach.Table1:AN-LEparametersANLETSPX_ANTRUEFALSECR_0'0'B'1'BCR_1'1'B'0'B4.3.2HandlingoferrorindicationsDuringtheexecutionoftheDLLATSmanyMDL-ERROR-INDwillbesenttothesystemmanagementduetotheinvalidandinopportunetestcases.ItisuptotheIUTsuppliertotakethenecessaryprecautionstoavoidanyimpactonthetestresult.SometestsuseNWKprocedurestotestDLLfunctions,itisnotalwayspossibletohandletheNWKproperly.TheeffectsofsuchfaultyNWKmessagesandproceduresareoutofthescopeoftheDLLATS.ItisuptotheIUTsuppliertotakethenecessaryprecautionstoavoidanyimpactonthetestresult.4.3.3LinkcontrolFSM-PhysicalLayerconnectionDuringtheLinkidentificationprocedure(seeETS300347-1[5],subclause16.2.4.3.5)theLinkcontrolFSMneedstocommunicatewitthePhysicallayer.ThisfacthasadirectimpactontheexecutionoftheLinkidentificationprocedure.Asitisnotpossibletomakerequirementsontheinternalbehavio
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