ETSI EN 300 188-4 V1.3.3 (2000-05)

Integrated Services Digital Network (ISDN); Three-Party (3PTY) supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol; Part 4: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the user

REN/SPS-05167-4

Digitalno omrežje z integriranimi storitvami (ISDN) – Dopolnilna storitev: konferenca treh (3PTY) – Protokol digitalne naročniške signalizacije št. 1 (DSS1) 4. del: Abstraktni preskušalni niz (ATS) in delna dodatna informacija za preskušanje izvedbe protokola (PIXIT) – Proforma specifikacija za uporabnika

General Information

• Status: Published
• Publication Date: 17-May-2000
• Technical Committee: SPS 5 3 - Conformance Testing
• Current Stage: 12 - Completion
• Due Date: 19-May-2000
• Completion Date: 18-May-2000
• Ref Project: SIST EN 300 188-4 V1.3.3:2003 - Integrated Services Digital Network (ISDN); Three-Party (3PTY) supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol; Part 4: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the user

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.VWRULWHYIntegrated Services Digital Network (ISDN); Three-Party (3PTY) supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol; Part 4: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the user33.080Digitalno omrežje z integriranimi storitvami (ISDN)Integrated Services Digital Network (ISDN)ICS:Ta slovenski standard je istoveten z:EN 300 188-4 Version 1.3.3SIST EN 300 188-4 V1.3.3:2003en01-december-2003SIST EN 300 188-4 V1.3.3:2003SLOVENSKI
STANDARD



SIST EN 300 188-4 V1.3.3:2003



ETSIEN300188-4V1.3.3(2000-05)EuropeanStandard(Telecommunicationsseries)IntegratedServicesDigitalNetwork(ISDN);Three-Party(3PTY)supplementaryservice;DigitalSubscriberSignallingSystemNo.one(DSS1)protocol;Part4:AbstractTestSuite(ATS)andpartialProtocolImplementationeXtraInformationforTesting(PIXIT)proformaspecificationfortheuserSIST EN 300 188-4 V1.3.3:2003



ETSIETSIEN300188-4V1.3.3(2000-05)2ReferenceREN/SPS-05167-4KeywordsISDN,DSS1,supplementaryservice,3PTY,ATS,PIXIT,userETSI650RoutedesLuciolesF-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 300 188-4 V1.3.3:2003



ETSIETSIEN300188-4V1.3.3(2000-05)3ContentsIntellectualPropertyRights.5Foreword.51Scope.62References.63Definitionsandabbreviations.73.1Definitions.73.2Abbreviations.74AbstractTestMethod(ATM).85Untestabletestpurposes.86ATSconventions.86.1Declarationspart.86.1.1Typedefinitions.86.1.1.1Simpletypedefinitions.86.1.1.2Structuredtypedefinitions.96.1.1.2.1TTCNstructuredtypedefinitions.96.1.1.2.2ASN.1structuredtypedefinitions.96.1.1.3ASPtypedefinitions.106.1.1.3.1TTCNASPtypedefinitions.106.1.1.3.2ASN.1ASPtypedefinitions.106.1.1.4PDUtypedefinitions.106.1.1.4.1TTCNPDUtypedefinitions.106.1.1.4.2ASN.1PDUtypedefinitions.116.1.2Testsuiteconstants.116.1.3Testsuiteparameters.116.1.4Variables.116.1.4.1Testsuitevariables.116.1.4.2Testcasevariables.116.1.5Testsuiteoperationdefinitions.116.2Constraintspart.126.2.1Structuredtypeconstraintdeclaration.126.2.2ASN.1typeconstraintdeclaration.126.2.2.1Specificationofencodingrules.136.2.3ASPtypeconstraintdeclaration.136.2.3.1ASN.1ASPtypeconstraintdeclaration.136.2.3.2TTCNASPtypeconstraintdeclaration.146.2.4PDUtypeconstraintdeclaration.146.2.4.1ASN.1PDUtypeconstraintdeclaration.146.2.4.2TTCNPDUtypeconstraintdeclaration.146.2.5Chainingofconstraints.146.2.5.1Staticchaining.146.2.5.2Dynamicchaining.146.2.6Derivedconstraints.146.2.7Parameterizedconstraints.156.2.8Valueassignment.156.2.8.1Specificvalues.156.2.8.2Matchingvalues.156.3Dynamicpart.156.3.1Testcases.156.3.2Teststeps.156.3.3Defaults.15SIST EN 300 188-4 V1.3.3:2003



ETSIETSIEN300188-4V1.3.3(2000-05)47ATStoTPmap.158PCTRconformance.169PIXITconformance.1610ATSconformance.16AnnexA(normative):ProtocolConformanceTestReport(PCTR)proforma.17A.1Identificationsummary.17A.1.1Protocolconformancetestreport.17A.1.2IUTidentification.17A.1.3Testingenvironment.17A.1.4Limitsandreservations.18A.1.5Comments.18A.2IUTconformancestatus.18A.3Staticconformancesummary.18A.4Dynamicconformancesummary.18A.5Staticconformancereviewreport.19A.6Testcampaignreport.19A.7Observations.19AnnexB(normative):PartialPIXITproforma.20B.1Identificationsummary.20B.2Abstracttestsuitesummary.20B.3Testlaboratory.20B.4Client(ofthetestlaboratory).21B.5SystemUnderTest(SUT).21B.6Protocolinformation.22B.6.1Protocolidentification.22B.6.2Parametervalues.22B.6.3SendingofmessagesbyIUT.22B.6.4Timervalues.22AnnexC(normative):AbstractTestSuite(ATS).23C.1TheTTCNGraphicalform(TTCN.GR).23C.2TheTTCNMachineProcessableform(TTCN.MP).23AnnexD(informative):GeneralstructureofATS.24AnnexE(informative):Changerecord.25E.1ChangesbetweenEN300188-4V1.2and1.3.25E.2ChangesbetweenETS300188-4andEN300188-4V1.2.25History.26SIST EN 300 188-4 V1.3.3:2003



ETSIETSIEN300188-4V1.3.3(2000-05)5IntellectualPropertyRightsIPRsessentialorpotentiallyessentialtothepresentdocumentmayhavebeendeclaredtoETSI.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).Thepresentdocumentispart4ofamulti-partstandardcoveringtheDigitalSubscriberSignallingSystemNo.one(DSS1)protocolspecificationfortheIntegratedServicesDigitalNetwork(ISDN)ThreeParty(3PTY)supplementaryservice,asdescribedbelow:Part1:"Protocolspecification";Part2:"ProtocolImplementationConformanceStatement(PICS)proformaspecification";Part3:"TestSuiteStructureandTestPurposes(TSS&TP)specificationfortheuser";Part4:"AbstractTestSuite(ATS)andpartialProtocolImplementationeXtraInformationforTesting(PIXIT)proformaspecificationfortheuser";Part5:"TestSuiteStructureandTestPurposes(TSS&TP)specificationforthenetwork";Part6:"AbstractTestSuite(ATS)andpartialProtocolImplementationeXtraInformationforTesting(PIXIT)proformaspecificationforthenetwork".ThepresentversionupdatestheATS.NationaltranspositiondatesDateofadoptionofthisEN:28April2000DateoflatestannouncementofthisEN(doa):31July2000DateoflatestpublicationofnewNationalStandardorendorsementofthisEN(dop/e):31January2001DateofwithdrawalofanyconflictingNationalStandard(dow):31January2001SIST EN 300 188-4 V1.3.3:2003



ETSIETSIEN300188-4V1.3.3(2000-05)61ScopeThisfourthpartofEN300188specifiestheAbstractTestSuite(ATS)andpartialProtocolImplementationeXtraInformationforTesting(PIXIT)proformafortheUsersideoftheTreferencepointorcoincidentSandTreferencepoint(asdefinedinITU-TRecommendationI.411[11])ofimplementationsconformingtothestagethreestandardfortheThreeParty(3PTY)supplementaryserviceforthepan-EuropeanIntegratedServicesDigitalNetwork(ISDN)bymeansoftheDigitalSubscriberSignallingSystemNo.one(DSS1)protocol,EN300188-1[2].EN300188-3[4]specifiestheTestSuiteStructureandTestPurposes(TSS&TP)relatedtothisATSandpartialPIXITproformaspecification.OtherpartsspecifytheTSS&TPandtheATSandpartialPIXITproformafortheNetworksideoftheTreferencepointorcoincidentSandTreferencepointofimplementationsconformingtoEN300188-1[2].2ReferencesThefollowingdocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthepresentdocument.• Referencesareeitherspecific(identifiedbydateofpublication,editionnumber,versionnumber,etc.)ornon-specific.• Foraspecificreference,subsequentrevisionsdonotapply.• Foranon-specificreference,thelatestversionapplies.• Anon-specificreferencetoanETSshallalsobetakentorefertolaterversionspublishedasanENwiththesamenumber.[1]ETSIEN300403-1:"IntegratedServicesDigitalNetwork(ISDN);DigitalSubscriberSignallingSystemNo.one(DSS1)protocol;Signallingnetworklayerforcircuit-modebasiccallcontrol;Part1:Protocolspecification[ITU-TRecommendationQ.931(1993),modified]".[2]ETSIEN300188-1(V1.2):"IntegratedServicesDigitalNetwork(ISDN);Three-Party(3PTY)supplementaryservice;DigitalSubscriberSignallingSystemNo.one(DSS1)protocol;Part1:Protocolspecification".[3]ETSIEN300188-2(V1.2):"IntegratedServicesDigitalNetwork(ISDN);Three-Party(3PTY)supplementaryservice;DigitalSubscriberSignallingSystemNo.one(DSS1)protocol;Part2:ProtocolImplementationConformanceStatement(PICS)proformaspecification".[4]ETSIEN300188-3(V1.2):"IntegratedServicesDigitalNetwork(ISDN);Three-Party(3PTY)supplementaryservice;DigitalSubscriberSignallingSystemNo.one(DSS1)protocol;Part3:TestSuiteStructureandTestPurposes(TSS&TP)specificationfortheuser".[5]ETSIEN300196-1:"IntegratedServicesDigitalNetwork(ISDN);Genericfunctionalprotocolforthesupportofsupplementaryservices;DigitalSubscriberSignallingSystemNo.one(DSS1)protocol;Part1:Protocolspecification".[6]ISO/IEC9646-1:"Informationtechnology-OpenSystemsInterconnection-Conformancetestingmethodologyandframework-Part1:Generalconcepts".[7]ISO/IEC9646-2:"Informationtechnology-OpenSystemsInterconnection-Conformancetestingmethodologyandframework-Part2:Abstracttestsuitespecification".[8]ISO/IEC9646-3:"Informationtechnology-OpenSystemsInterconnection-Conformancetestingmethodologyandframework-Part3:TheTreeandTabularCombinedNotation(TTCN)".[9]ISO/IEC9646-4:"Informationtechnology-OpenSystemsInterconnection-Conformancetestingmethodologyandframework-Part4:Testrealization".SIST EN 300 188-4 V1.3.3:2003



ETSIETSIEN300188-4V1.3.3(2000-05)7[10]ISO/IEC9646-5:"Informationtechnology-OpenSystemsInterconnection-Conformancetestingmethodologyandframework-Part5:Requirementsontestlaboratoriesandclientsfortheconformanceassessmentprocess".[11]ITU-TRecommendationI.411(1993):"ISDNuser-networkinterfaces-Referenceconfigurations".[12]CCITTRecommendationX.209(1988):"SpecificationofbasicencodingrulesforAbstractSyntaxNotationOne(ASN.1)".[13]ETSIETS300102:"IntegratedServicesDigitalNetwork(ISDN);User-networkinterfacelayer3;Specificationsforbasiccallcontrol".3Definitionsandabbreviations3.1DefinitionsForthepurposesofthepresentdocument,thefollowingtermsanddefinitionsapply:AbstractTestSuite(ATS):seeISO/IEC9646-1[6]ImplementationUnderTest(IUT):seeISO/IEC9646-1[6]LowerTester(LT):seeISO/IEC9646-1[6]PointofControlandObservation(PCO):seeISO/IEC9646-1[6]ProtocolImplementationConformanceStatement(PICS):seeISO/IEC9646-1[6]PICSproforma:seeISO/IEC9646-1[6]ProtocolImplementationeXtraInformationforTesting(PIXIT):seeISO/IEC9646-1[6]PIXITproforma:seeISO/IEC9646-1[6]SystemUnderTest(SUT):seeISO/IEC9646-1[6]UpperTester(UT):seeISO/IEC9646-1[6]3.2AbbreviationsForthepurposesofthepresentdocument,thefollowingabbreviationsapply:3PTYThreePartyASPAbstractServicePrimitiveATMAbstractTestMethodATSAbstractTestSuiteBERBasicEncodingRulesExTSExecutableTestSuiteIUTImplementationUnderTestLTLowerTesterMOTMeansOfTestingPCOPointofControlandObservationPDUProtocolDataUnitPICSProtocolImplementationConformanceStatementPIXITProtocolImplementationeXtraInformationforTestingSUTSystemUnderTestTCPTestCo-ordinationProceduresTPTestPurposeTTCNTreeandTabularCombinedNotationUTUpperTesterSIST EN 300 188-4 V1.3.3:2003



ETSIETSIEN300188-4V1.3.3(2000-05)84AbstractTestMethod(ATM)Theremotetestmethodisappliedforthe3PTYuserATS.ThePointofControlandObservation(PCO)residesattheserviceaccesspointbetweenlayers2and3.ThisPCOisnamed"L"(forLower).TheLPCOisusedtocontrolandobservethebehaviouroftheImplementationUnderTest(IUT)andtestcaseverdictsareassigneddependingonthebehaviourobservedatthisPCO.TesterSUTLTIUTPCOLayer2Layer2Layer1Layer1ServiceproviderFigure1:RemotetestmethodISO/IEC9646-2[7]allowstheinformalexpressionofTestCo-ordinationProcedures(TCP)betweentheSystemUnderTest(SUT)upperlayer(s)andtheLowerTester(LT).IntheATScontainedinannexC,TCPisachievedbyuseofasecond"informal"PCO,called"O"(forOperator).ThisPCOisusedtospecifycontrolbutnotobservationabovetheIUTandconsequently,eventsatthisPCOareneverusedtogeneratetestcaseverdicts.TheuseofthisOPCOisregardedasapreferredalternativetotheuseoftheimplicitsendevent,inthatitallowstheATStospecifyinaclearandmeaningfulwaywhatactionsarerequiredtobeperformedontheIUT.5UntestabletestpurposesTherearenountestabletestpurposesassociatedwiththisATS.6ATSconventionsThisclauseisstructuredsimilarlytothestructureofaTTCNATS.However,thenamesofthesubclausesarearrangedinawaymoresuitabletothepresentdocument.6.1Declarationspart6.1.1Typedefinitions6.1.1.1SimpletypedefinitionsWhereappropriate,simpletypeshavealength,avaluelistorarangerestrictionattached.Simpletypesdefinedasbeingofsomestringtype(e.g.BITSTRING,OCTETSTRING),havealengthrestrictionoravaluelistattached.Simpletypes,definedasbeingofINTEGERtype,haveavaluelistorarangerestrictionattached.SIST EN 300 188-4 V1.3.3:2003



ETSIETSIEN300188-4V1.3.3(2000-05)96.1.1.2Structuredtypedefinitions6.1.1.2.1TTCNstructuredtypedefinitionsAllstructuredtypedefinitionsareprovidedwithafullname.Allelementsineverystructuredtypedefinition,definedasbeingofsomestringtype(e.g.BITSTRING,OCTETSTRING),havealengthrestrictionattached.Ifanelementinastructuredtypedefinitionisdefinedasbeingofareferencedtype,the(possible)restrictionisdefinedinthatreferencedtype.Forinformationelementstheidentifier,whichisuniqueforeachelement,hasitstypedefinedasasimpletypewherethevaluelistisrestrictedtothesinglevaluewhichistheidentifieritself.ThishastheadvantagethatitallowsatestsystemderivedfromthisATStoeasilyidentifyinformationelementsembeddedinmessages.AnATSwhereinformationelementidentifiersarerepresentedasunrestrictedtypescanpresentdifficultiesforaderivedtestsysteminthecasewhereitneedstofindoneinformationelementembeddedinanumberofothersandtheconstraintsfortheotherelementshavetheany-or-omitvalue.Insuchacasethetestsystemcannoteasilyfindthebeginningofeachinformationelement.6.1.1.2.2ASN.1structuredtypedefinitionsASN.1hasbeenusedforthreemajorreasons.First,typesdefinedinASN.1canmodelproblemsthat"pure"TTCNcannot.Forinstance,datastructuresmodellingorderedorunorderedsequencesofdataarepreferablydefinedinASN.1.Second,ASN.1providesabetterrestrictionmechanismfortypedefinitionsbyusingsub-typedefinitions.Third,itisnecessarytouseASN.1toreproducethetypedefinitionsforremoteoperationcomponentsasspecifiedinthebasestandards.ThefactthatASN.1providesabetterrestrictionmechanismfortypedefinitionsisusedforthepurposeofachievingtype-compatibility.Tables1and2showthetypicaluseofASN.1.TheFIEtypeintable1iswritteninASN.1topermittheuseoftheSETOFconstructioninthecomponentsfield.ConstraintsoftheFIEtypecanthereforebewrittenusingtheSUPERSETfunctionwhichallowstomatchasinglecomponentwhichmaybedeliveredtogetherwithasetofothercomponents.Table2showstherejectcomponenttypewhichisdefinedfollowingtheASN.1declarationinEN300196-1[5].Table1:ASN.1typedefinitionFIEASN.1TypeDefinitionTypeName:FIEComments:FacilityinformationelementtakenfromEN300196;11.2.2.1.Specifiedhereforbothsend&receiveevent.TypeDefinitionSEQUENCE{informationElementIdentifierFIE_I,lengthFIE_LengthType,extBitBITSTRING(SIZE(1)),spareBitsBITSTRING(SIZE(2)),protocolProfileBITSTRING(SIZE(5)),componentsSETOFComponent}Table2:ASN.1typedefinitionRejectComponentASN.1TypeDefinitionTypeName:RejectComponentComments:RejectComponentisnotspecifictoanyparticularoperation.TheinvokeIDmaybeusedtoidentifyaspecificoperation.TypeDefinitionSEQUENCE{invokedIDCHOICE{invokeIDInvokeIDType,nullNULL},problemCHOICE{generalProblem[0]IMPLICITGeneralProblem,invokeProblem[1]IMPLICITInvokeProblem,returnResultProblem[2]IMPLICITReturnResultProblem,returnErrorProblem[3]IMPLICITReturnErrorProblem}}SIST EN 300 188-4 V1.3.3:2003



ETSIETSIEN300188-4V1.3.3(2000-05)10Table3showsanexampleofhowASN.1canbeusedtomodelunorderedsequences.Table3:ASN.1typedefinitionFIESASN.1TypeDefinitionTypeName:FIESComments:TypeDefinitionSETOFFIEThepossibilitytouseTTCNandASN.1incombinationisused,i.e.referringtoanASN.1typefromaTTCNtype.6.1.1.3ASPtypedefinitions6.1.1.3.1TTCNASPtypedefinitionsTTCNASPtypedefinitionsonlycontainonePDUornoPDUatall.TherelationshipbetweenanASPtypeandaPDUtypeisone-to-one.Thatis,thereexistsoneASPtypedefinitionforeachPDUtypedefinition(ifthatASPtypecontainsaPDU).AllTTCNASPtypedefinitionsareprovidedwithafullidentifier.SomeASPsarenotparameterizedasshownintheexampleintable4.SuchASPsareonlyusedforrequestingorreceivingservicefromthelowerlayer.Table4:TTCNASPtypedefinitionDL_REL_INTTCNASPTypeDefinitionASPNAME:DL_REL_IN(DL_RELEASE_INDICATION)PCOType:SAPComments:ParameterName|ParameterType|CommentsDetailedComments:Table5showsanexampleofaparameterizedASP.AllASPscontainingPDUscontainonlythatPDUandnootherparameters.Table5:TTCNASPtypedefinitionDL_DATA_RQ_ALERTTTCNASPTypeDefinitionASPNAME:DL_DATA_RQ_ALERT(DL_DATA_REQUEST)PCOType:SAPComments:ParameterName|ParameterType|Commentsmun(MessageUnit)|ALERT_PDU|DetailedComments:6.1.1.3.2ASN.1ASPtypedefinitionsTherearenoASN.1ASPtypedefinitionsintheATS.6.1.1.4PDUtypedefinitions6.1.1.4.1TTCNPDUtypedefinitionsTheTTCNPDUtypereflectstheactualdatabeingtransferredorreceived.AllPDUsareembeddedinASPs.IfaspecificPDUtypedefinitioncontainselementsdefinedintermsofapre-definedtype,thatelementhasarestrictionattachedtoit.SIST EN 300 188-4 V1.3.3:2003



ETSIETSIEN300188-4V1.3.3(2000-05)116.1.1.4.2ASN.1PDUtypedefinitionsTherearenoASN.1PDUtypedefinitionsintheATS.6.1.2TestsuiteconstantsNotestsuiteconstantsareusedordefinedinthisATS.6.1.3TestsuiteparametersEachtestsuiteparameterisdefinedintermsofapredefinedtypeorareferencedtype.Areferencedtypeisusedwhenitisnecessarytoattachrestrictionstothesetypedefinitions(itisnotallowedtoincluderestrictionsdirectlyinthetestsuiteparametertable).Thereferencedtypecanhavealengthorvaluerestrictionattachedtoitinitsdeclarationtable.6.1.4Variables6.1.4.1TestsuitevariablesNotestsuitevariablesareusedordefinedinthisATS.6.1.4.2TestcasevariablesEachtestcasevariableisdefinedintermsofapredefinedtypeorareferencedtype.Areferencedtypeisusedwhenitisnecessarytoattachrestrictionstothesetypedefinitions(itisnotallowedtoincluderestrictionsdirectlyinthetestcasevariabletable).Thereferencedtypecanhavealengthorvaluerestrictionattachedtoitinitsdeclarationtable.Wheretestcasevariablesareusedinconstraints,theyarepassedasformalparameters.6.1.5TestsuiteoperationdefinitionsThedescriptionpartofatestsuiteoperationdefinitionuseseithernaturallanguageormetaC.Table6:TestsuiteoperationdefinitionASSIGN_CHITestSuiteOperationDefinitionOperationName:ASSIGN_CHI(basic,primary:CHI;basic_flag:BOOLEAN)ResultType:CHIComments:ThisoperationisusedtoassignacorrectChannelidentificationinformationelementtoPDUsdependentonthetypeofaccessthatistested.Description{if(basic_flag)returnbasic;elsereturnprimary}Detailedcomments:Thetestsuiteoperationdefinitionshownintable6isusedintheconstraintspartwhenassigninganelementoftypeCHIavalue.Aspreviouslydescribed,theCHItypecanbedefinedintwowaysdependingonwhethertheATSistestingbasicorprimaryrateaccess.ThisoperationisusedtoassignavaluetoanelementofCHItype.Ittakesthreeparameters:primary:aconstraintoftypeCHIvalidforprimaryrateaccess;basic:aconstraintoftypeCHIvalidforbasicaccess;basic_flag:aBooleanvalue:TRUEifbasicaccessisapplicable,FALSEotherwise.ThisoperationreturnsthecorrectconstraintaccordingtotheBooleanflagbasic_flag.ThatconstraintwillthenbeassignedtothespecificelementoftypeCHI.SIST EN 300 188-4 V1.3.3:2003



ETSIETSIEN300188-4V1.3.3(2000-05)126.2Constraintspart6.2.1StructuredtypeconstraintdeclarationForeverystructuredtypedefinitionthereexistsoneormorestructuredtypeconstraint.6.2.2ASN.1typecons
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