ETSI EN 300 347-4 V3.1.1 (2001-03)

V interfaces at the digital Local Exchange (LE); V5.2 interface for the support of Access Network (AN); Part 4: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the network layer (AN side)

REN/SPAN-09102-4

Vmesniki V pri digitalnih krajevnih centralah (LE) – Vmesnik V5.2 za podporo dostopovnemu omrežju (AN) – 4. del: Abstraktni preskušalni niz (ATS) in delna dodatna informacija za preskušanje izvedbe protokola (PIXIT) – Proforma specifikacija za omrežno plast na strani dostopovnega omrežja (AN)

General Information

• Status: Published
• Publication Date: 26-Mar-2001
• Technical Committee: SPAN 9 - Access Networks and Service Node Interfaces
• Current Stage: 12 - Completion
• Due Date: 30-Mar-2001
• Completion Date: 27-Mar-2001
• Ref Project: SIST EN 300 347-4 V3.1.1:2005 - V interfaces at the digital Local Exchange (LE); V5.2 interface for the support of Access Network (AN); Part 4: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the network layer (AN side)

Standards Content (Sample)

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) – 4. del: Abstraktni preskušalni niz (ATS) in delna dodatna informacija za preskušanje izvedbe protokola (PIXIT) – Proforma specifikacija za omrežno plast na strani dostopovnega omrežja (AN)V interfaces at the digital Local Exchange (LE); V5.2 interface for the support of Access Network (AN); Part 4: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the network layer (AN side)33.040.30Komutacijski in signalizacijski sistemSwitching and signalling systemsICS:Ta slovenski standard je istoveten z:EN 300 347-4 Version 3.1.1SIST EN 300 347-4 V3.1.1:2005en01-januar-2005SIST EN 300 347-4 V3.1.1:2005SLOVENSKI
STANDARD



SIST EN 300 347-4 V3.1.1:2005



ETSIEN300347-4V3.1.1(2001-03)EuropeanStandard(Telecommunicationsseries)VinterfacesatthedigitalLocalExchange(LE);V5.2interfaceforthesupportofAccessNetwork(AN);Part4:AbstractTestSuite(ATS)andpartialProtocolImplementationeXtraInformationforTesting(PIXIT)proformaspecificationforthenetworklayer(ANside)SIST EN 300 347-4 V3.1.1:2005



ETSIETSIEN300347-4V3.1.1(2001-03)2ReferenceREN/SPAN-09102-4KeywordsAN,ATS,LE,PIXIT,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.©EuropeanTelecommunicationsStandardsInstitute2001.Allrightsreserved.SIST EN 300 347-4 V3.1.1:2005



ETSIETSIEN300347-4V3.1.1(2001-03)3ContentsIntellectualPropertyRights.5Foreword.51Scope.62References.63Definitionsandabbreviations.73.1Definitions.73.2Abbreviations.74Abstracttestmethod.84.1ATM.84.2NWKlayerprotocoltesting.84.3DatalinkAddresses.94.4ExecutionofTCs.94.4.1Handlingoferrorindication.94.4.2TCexecutionsequence.95Untestabletestpurposes.105.1Controlprotocol.105.2PSTNprotocol.115.3Linkcontrolprotocol.115.4BCCProtocol.125.5Protectionprotocol.126Abstracttestsuiteconventions.126.1Namingconventions.126.1.1Declarationpart.126.1.2Constraintpart.136.1.3Dynamicpart.146.1.3.1Testcases.146.1.3.2Teststeps.146.1.3.3Generalaspects.146.1.4ATSabbreviations.146.2Implementationconventions.156.2.1Declarationpart.156.2.2Constraintpart.156.2.3Dynamicpart.166.2.4Documentation.17AnnexA(normative):AbstracttestsuiteforNWKtesting.18A.1TheTTCNGraphicalform(TTCN.GR).18A.2TheTTCNMachineProcessableform(TTCN.MP).18AnnexB(normative):PartialPIXITproforma.19B.1Introduction.19B.2PIXITproforma.19B.2.1Identificationsummary.19B.2.2Abstracttestsuitesummary.19B.2.3Testlaboratory.19B.2.4Client.20B.2.5SUT.20B.2.6Protocollayerinformation.21B.2.6.1Protocolidentification.21B.2.6.2IUTinformation.21SIST EN 300 347-4 V3.1.1:2005



ETSIETSIEN300347-4V3.1.1(2001-03)4History.30SIST EN 300 347-4 V3.1.1:2005



ETSIETSIEN300347-4V3.1.1(2001-03)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).Thepresentdocumentispart4ofamulti-partdeliverablecoveringtheVinterfacesatthedigitalLocalExchange(LE);V5.2interfaceforthesupportofAccessNetwork(AN),asdescribedbelow:Part1:"V5.2interfacespecification";Part2:"ProtocolImplementationConformanceStatement(PICS)proformaspecification";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:"Testspecificationforthephysicallayer".NationaltranspositiondatesDateofadoptionofthisEN:23March2001DateoflatestannouncementofthisEN(doa):30June2001DateoflatestpublicationofnewNationalStandardorendorsementofthisEN(dop/e):31December2001DateofwithdrawalofanyconflictingNationalStandard(dow):31December2001SIST EN 300 347-4 V3.1.1:2005



ETSIETSIEN300347-4V3.1.1(2001-03)61ScopeThepresentdocumentcontainstheAbstractTestSuite(ATS)aswellastheAbstractTestMethod(ATM)andthepartialProtocolImplementationeXtraInformationforTesting(PIXIT)proformafortheNetworklayer(NWK)oftheV5.2interfaceandpartsofthesystemmanagementoftheAccessNetwork(AN)sideofaV5.2interface.TheobjectiveofthepresentdocumentistoprovideanATScontainingconformancetestswhichgiveahighprobabilityofinter-operabilityofanANandaLocalExchange(LE)fromdifferentmanufacturersovertheV5.2interface.ISO/IEC9646-1[7]andISO/IEC9646-2[8]areusedasthebasisforthetestmethodology.TheATSisdefinedusingtheTreeandTabularCombinedNotation(TTCN)accordingtoISO/IEC9646-3[9].TheATSinannexAdescribesasetofTestCases(TCs)whicharebasedontheTestPurposes(TPs)specifiedinEN300347-3[6](whichisanextensionofETS300324-3[2]).TheTCsprovidetheimplementationoftheTPsandcanbeconvertedintoanexecutabletestsuitebyusingavailableTTCNtranslatorsandthecorrespondingtools.AnnexBprovidesthepartialPIXITproforma.2ReferencesThefollowingdocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthepresentdocument.• Referencesareeitherspecific(identifiedbydateofpublication,editionnumber,versionnumber,etc.)ornon-specific.• Foraspecificreference,subsequentrevisionsdonotapply.• Foranon-specificreference,thelatestversionapplies.• Anon-specificreferencetoanETSshallalsobetakentorefertolaterversionspublishedasanENwiththesamenumber.[1]ETSIEN300324-1(V1.2.3):"VinterfacesatthedigitalLocalExchange(LE);V5.1interfaceforthesupportofAccessNetwork(AN);Part1:V5.1interfacespecification".[2]ETSIETS300324-3(1999):"VinterfacesatthedigitalLocalExchange(LE);V5.1interfaceforthesupportofAccessNetwork(AN);Part3:TestSuiteStructureandTestPurposes(TSS&TP)specificationforthenetworklayer(ANside)".[3]ETSIETS300324-4(1999):"VinterfacesatthedigitalLocalExchange(LE);V5.1interfaceforthesupportofAccessNetwork(AN);Part4:AbstractTestSuite(ATS)andpartialProtocolImplementationeXtraInformationforTesting(PIXIT)proformaspecificationforthenetworklayer(ANside)".[4]ETSIEN300347-1(V2.2.2):"VinterfacesatthedigitalLocalExchange(LE);V5.2interfaceforthesupportofAccessNetwork(AN);Part1:V5.2interfacespecification".[5]ETSIEN300347-2(V2.1.3):"VinterfacesatthedigitalLocalExchange(LE);V5.2interfaceforthesupportofAccessNetwork(AN);Part2:ProtocolImplementationConformanceStatement(PICS)proformaspecification".[6]ETSIEN300347-3:"VinterfacesatthedigitalLocalExchange(LE);V5.2interfaceforthesupportofAccessNetwork(AN);Part3:TestSuiteStructureandTestPurposes(TSS&TP)specificationforthenetworklayer(ANside)".[7]ISO/IEC9646-1:"Informationtechnology-OpenSystemsInterconnection-Conformancetestingmethodologyandframework-Part1:Generalconcepts".[8]ISO/IEC9646-2:"Informationtechnology-OpenSystemsInterconnection-Conformancetestingmethodologyandframework-Part2:Abstracttestsuitespecification".SIST EN 300 347-4 V3.1.1:2005



ETSIETSIEN300347-4V3.1.1(2001-03)7[9]ISO/IEC9646-3:"Informationtechnology-OpenSystemsInterconnection-Conformancetestingmethodologyandframework-Part3:TheTreeandTabularCombinedNotation(TTCN)".[10]ISO/IEC9646-5:"Informationtechnology-OpenSystemsInterconnection-Conformancetestingmethodologyandframework-Part5:Requirementsontestlaboratoriesandclientsfortheconformanceassessmentprocess".[11]ETSIETS300406:"MethodsforTestingandSpecification(MTS);Protocolandprofileconformancetestingspecifications;Standardizationmethodology".[12]ETSIETR141:"MethodsforTestingandSpecification(MTS);Protocolandprofileconformancetestingspecifications;TheTreeandTabularCombinedNotation(TTCN)styleguide".[13]ETSIEN300377-1:"Q3interfaceattheLocalExchange(LE)forconfigurationmanagementofV5interfacesandassociatedcustomerprofiles;Part1:Q3interfacespecification".3Definitionsandabbreviations3.1DefinitionsForthepurposesofthepresentdocument,thetermsanddefinitionsgiveninETS300324-4[3]apply.3.2AbbreviationsForthepurposesofthepresentdocument,thefollowingabbreviationsapply:ANAccessNetworkASPAbstractServicePrimitiveATMAbstractTestMethodATSAbstractTestSuiteBCCBearerChannelConnectionBIInvalidBehaviourBOInopportuneBehaviourBVValidBehaviourCACApabilitytestCTRLControlDLLDataLinkLayerDSAPDatalinkSAPFEFunctionElementIEInformationElementIEIInformationElementIdentifierISDNIntegratedServicesDigitalNetworkISDN-BAISDN-BasicAccessITbasicInterconnectionTestIUTImplementationUnderTestL3addrLayer3addressLCLineCircuitLT1LowerTester1MPHManagementPhysicallayerNWKNetworkLayerPCOPointofControlandObservationPDUProtocolDataUnitPICSProtocolImplementationConformanceStatementPIXITProtocolImplementationeXtraInformationforTestingREQRequestSAPServiceAccessPointSUTSystemUnderTestTPTestPurposesTSSTestSuiteStructureSIST EN 300 347-4 V3.1.1:2005



ETSIETSIEN300347-4V3.1.1(2001-03)8TTCNTreeandTabularCombinedNotationULUpperLayerUTUpperTesterV5DLaddrV5DataLinkaddress4AbstracttestmethodThisclausedescribestheAbstractTestMethod(ATM)andthePointofControlandObservation(PCO)usedtotesttheNWKoftheV5.2protocolfortheANcomponents.4.1ATMPrincipally,theremotetestmethodisusedforV5.2ANNWKconformancetesting.CertainV5.2ANNWKTPsneedalsopartoftheserviceandnationalfunctions.Therefore,theembeddedvariantoftheremotetestmethodisapplied.ThenationaldependantinformationisdefinedinthePIXIT.4.2NWKlayerprotocoltestingTheV5.2implementationsdonotofferadirectaccesstotheupperserviceboundary.Theremotetestmethodwaschosenbecauseanyco-ordinationprocedurescanonlybeexpressedinaninformalway.SUTV5NWKPDUsServiceProviderDLL&PHLlayersLT1Control,BCC,LINK,ProtectionandPSTNDLconnectionendpointsV5TestSystemIUTV5-NWKDL-DATAPCO/DSAPUTFigure1:RemotesinglelayertestmethodappliedtotheV5.2NWKlayertestingLT1:ALowerTester(LT1)islocatedinaremoteV5.2testsystem.ItcontrolsandobservesthebehavioursoftheIUT.DSAP:AuniqueDatalinkServiceAccessPoint(DSAP)isdefinedattheV5.2interfaceandcommonlyusedforexchangingservicedataofthedifferentnetworklayerprotocolfunctionalentities.PCO:ThePCOsforNWKtestingarelocatedontheDSAP,PSAP,PSTN_ACCESSandPCM_ACCESSinterfaces.AlltesteventsattheDSAParespecifiedintermsofDataLinkLayer(DLL)AbstractServicePrimitives(ASPs)andnetworklayerPDUs.AlltesteventsatthePSAParespecifiedintermsofphysicallayerASPs.AlltesteventsatPSTN_ACCESSandPCM_ACCESSaredefinedasASPs.SIST EN 300 347-4 V3.1.1:2005



ETSIETSIEN300347-4V3.1.1(2001-03)9UT:NoexplicitUpperTester(UT)existsinthetestsystem.However,theSUTneedstocarryoutsomeULfunctionstoachievesomeeffectsoftestco-ordinationprocedures.DesigningATS,thecapabilityofthesystemmanagementfunctions,suchascontrolsoftheIUT,itsinteractionswiththeQinterfacemaybetakenintoaccount.ThecontrolsoftheIUTwillbeimpliedorinformallyexpressedintheATS,butnoassumptionshallbemaderegardingtheirfeasibilityorrealization.ExamplesofsuchcontrolscouldbetoprovokerestartingIUTorblocking/unblockingproceduresthroughQinterface.V5-NWK:TotestthePSTNandISDNprotocols,asimulatorshallbeattachedtorelevantUserPort(UP).4.3DatalinkAddressesWithintheDSAP,differentV5DLaddrareusedtoidentifyeachcorrespondingdatalinkconnection.Eachnetworklayerprotocolfunctionalentitycanhaveonlyonedatalinkconnection,e.g.allPSTNsignallinginformationsharesonedatalinkconnection.Table1showstheallocatedV5DLaddrusedbyprotocolfunctionentities.Table1:V5DLaddrProtocolPSTNControlBCCProtectionLinkControlV5DLaddr817681778178817981804.4ExecutionofTCs4.4.1HandlingoferrorindicationDuringtheexecutionoftheNWKATSmanyerrorindicationswillbesenttothesystemmanagementduetotheinvalidandtheinopportuneTCs.ItisuptotheIUTsuppliertotakethenecessaryprecautionstoavoidanyimpactonthetestresult.4.4.2TCexecutionsequenceThefollowingtestsequenceshallbeapplied:TheTCcontainingthestart-upprocedureshallalwaysbethefirstTCexecuted.AlsoinanycasewheretheIUThastoberestartedthisTCshallbefirstexecuted.-Protocolgroups:CTRLLINKPROTECTIONPSTNBCC.-Testgroups:ITCATIBVBOBI.Interactionsbetweenthedifferenttestgroupsarenotconsidered.ItisuptotheIUTsuppliertotakethenecessaryprecautionstoavoidanyimpactonthetestresult.NOTE:ThisappliesinparticulartoPORTCONTROLmessagesfromISDNportswhiletestingPSTN-relatedprotocolsandviceversa.SIST EN 300 347-4 V3.1.1:2005



ETSIETSIEN300347-4V3.1.1(2001-03)105UntestabletestpurposesThisclausegivesalistofTPswhicharenotimplementedintheATSduetothechosenabstracttestmethodorotherrestrictions.5.1ControlprotocolTable2listsTPswhicharenotcoveredbytheATSduetounknownreactionoftheIUTaftertestingtheTPsorduetothefacttheyhavethesamepurposeofTCalreadyimplemented.Table2:UntestableTPsTestPurposeTP1311S1_01TP1313S0_01TP1321S2_01TP1324S1001TP1324S1002TP1324SM_06TP1324SM_07TP1325SM_03TP1325S2207TP1325S2208TP1325S2209TP1326SM_07TP1326S2008TP1326S2009TP1326S2010TP1326S2011TP1326S2012TP1424S1101TP1425SM_01TP1426SM_01TP1426SM_02TP1426SM_03TP1521S1-01SIST EN 300 347-4 V3.1.1:2005



ETSIETSIEN300347-4V3.1.1(2001-03)115.2PSTNprotocolThefollowingtestpurposesarenotimplementedintheATSduetounknownreactionoftheIUTaftertestingtheTPsorduetothefacttheyhavethesamepurposeofTCalreadyimplemented.Table2aTestPurposeTP23__S0_04TP23__S0_06TP23__S0_07TP23__S1_08TP23__S1_09TP23__S2_11TP23__S3_10TP23__S3_11TP23__S4_06TP23__S4_09TP23__S4_10TP23__S6_05TP23__S7_11TP24__S2_03TP24__S2_04TP24__S3_04TP24__S3_05TP24__S4_05TP24__S5_04TP24__S5_05TP24__S5_06TP24__S7_02TP26__S5_015.3LinkcontrolprotocolThefollowingtestpurposesarenotimplementedintheATSduetounknownreactionoftheIUTaftertestingtheTPsorduetothefacttheyhavethesamepurposeofTCalreadyimplemented.Table3:UntestableTPsTestPurposeTP31__SM_01TP32__SM_01TP33_1S1_01TP33_1SM_03TP33_7S1002TP33_7S1103TP33_7S1112TP33_7S1113TP33_7S2001TP33_7S2105TP33_7S2125TP33_7S2126TP33_7S2204TP33_7S2222TP33_7SM_11TP33_7SM_29SIST EN 300 347-4 V3.1.1:2005



ETSIETSIEN300347-4V3.1.1(2001-03)125.4BCCProtocolTable4listsTPswhicharenotcoveredbytheATS.Table4:UntestableTPsTestPurposeTP41__SM_01TP43__SM_21TP44__S1_02TP44__S1_03TP44__S1_04TP46__S1_01TP46__S1_025.5ProtectionprotocolThefollowingtestpurposesarenotimplementedintheATS.Table5:UntestableTPsTestPurposeTP51__SM_01TP53__SM_05TP53__SM_06TP53__SM_18TP53__SM_20TP56__S0_02TP56__S1_046AbstracttestsuiteconventionsTheATSconventionsareintendedtogiveabetterunderstandingoftheATSbuttheydescribealsotheconventionsmadeforthedevelopmentoftheATS,thusforanylatermaintenancepurposesorfurtherdevelopmentoftheATStheconventionsdescribedinthisclauseshallbeconsidered.TheATSconventionscontaintwoclauses,thenamingconventionsandtheimplementationconventions.ThenamingconventionsdescribethestructureofthenamingofallATSelements.TheimplementationconventionsdescribethefunctionalstructureoftheATS.NOTE:TodefinetheATS,theguidelinesgiveninETS300406[11]andETR141[12]wereconsidered.6.1Namingconventions6.1.1DeclarationpartTheIDnamesofthefollowingdefinitionsarewritteninlowercase:-structuredtypedefinitions;-ASPtypedefinitions;-PDUtypedefinitions.SIST EN 300 347-4 V3.1.1:2005



ETSIETSIEN300347-4V3.1.1(2001-03)13TheIDnamesofthefollowingdefinitionsarewritteninuppercase:-TestSuiteParameterDeclarations;-TestCaseSelectionExpressionDefinitions;-TestSuiteConstantDeclarations;-TestCaseVariableDeclarations.IDnamesofPDUsandstructuredtypescommencewithaprotocolidentifiertodefinewhichprotocoltheyarebelongingto.Thefollowingidentifiersareused:-controlprotocol:ctrle.g.crtl_common_control_ack;-PSTNsignalling:pstne.g.pstn_signal_ack.IDnamesofPDUsandstructuredtypeswhichareusedforinvalidtestscommencewith"bi".EXAMPLE1:bi_com_ctrl_two_mety.CompletenamesasdefinedinthespecificationsareusedforIDnamesofdeclarations.EXAMPLE2:ctrl_control_function_element.TestsuiteparameterIDnamescommencewithTSP:-PICSareidentifiedbyaddingtheletter"C":TSPC_.(e.g.:TSPC_PSTN);-PIXITareidentifiedbyaddingtheletter"X":TSPX_.(e.g.:TSPX_PORT_ADDRESS).Ifthetestsuiteparameterisrepresentingasystemparameterorvalue,onlytheparameternameisused.EXAMPLE3:MR(receivesequencenumberinsignalmessage).TestsuiteoperationscommencewithTSO.EXAMPLE4:TSO_INTEGER_TO_OCTETSTRING.TestsuiteconstantIDnamescommencewithTSC.EXAMPLE5:TSC_CFE_FE201_2_UNBL.Iftheconstantisrepresentingasystemparameterorvalue,onlytheparameternameisused.EXAMPLE6:N01.IDnamesofTimerscommencewithT.Thesamenamesasinthespecificationareused.EXAMPLE7:T01.6.1.2ConstraintpartConstraintnamescommencewithuppercase.TheremainingpartoftheIDnameiswritteninlowercase.IDnamesofelementsconcerningthesamesubjecthaveequivalentnamesinthedeclarationandtheconstraintpart:-Declarationpart:ctrl_control_function_element;-Constraintpart:Ctrl_control_function_element.Thenameofthemodifiedconstraintdescribestheparticularityofthemodifiedconstraint.EXAMPLE:Ctrl_cc_mand_only(commoncontrolmessagewhichcontainsonlythemandatoryIEs).Ifformalparameterlistsareused,thevariablenamesarewritteninlowercase.Thevariablenameisthesameasthenameoftheelementitisrepresenting.SIST EN 300 347-4 V3.1.1:2005



ETSIETSIEN300347-4V3.1.1(2001-03)146.1.3Dynamicpart6.1.3.1TestcasesTheidentifieroftheTCsisconstructedinthesamewayasfortheTPsdescribedinEN300347-3[6],clause5.1.1,withtheexceptionthat"TP"isreplacedby"TC".-TPidentifier:TP1324S1106;-TCidentifier:TC1324S1106.6.1.3.2TeststepsInTCs,teststepsaswellaslocaltreesareused.Toallowaneasydistinction,thefollowingnamingisapplied:-localtree:LTS_[local_tree_name];-teststep:STEP_[test-step_name].6.1.3.3GeneralaspectsAllverdictassignmentsarelabelled.Toallowanexactidentificationinwhichtabletheverdictwasassigned,thefollowingnameconventionisapplied:BtestBodyCSCheckStateteststepsDDefaultEErrorhandlingteststepsPOPOstamblePRPReambleStestStepCombinationsoflabelsarealsopossible.EXAMPLE:DPR→labelwhichisusedinadefaultforpreambles.6.1.4ATSabbreviationsTheseabbreviationsareusedtoshortenidentifiernames:addraddressactactivateaccaccessackacknowledgementallocallocationcaucausecccommoncontrolcfecontrolfunctionelementcficontrolfunctionidentifierchanchannelcomcommoncplcompletectrlcontroldldatalinkenqenquiryestestablishfuncfunctionindindicationinterfinterfacemandmandatorymetymessagetypemodmodifiedSIST EN 300 347-4 V3.1.1:2005



ETSIETSIEN300347-4V3.1.1(2001-03)15parparameterpcportcontrolpdprotocoldiscriminatorperformperformanceprogprogressprprotectionprotocolprotprotocolprovprovisionedreprore-provisioningreqrequestrestrestartrspresponseupuserportvarvariantverifyverifyingvidvariant&interfaceID6.2Implementationconventions6.2.1DeclarationpartThecommentlineofsingleelementTTCNtables(e.g.testsuiteconstants)isusedtogiveareferencewheretheformatandcontentoftheelementisdescribedintherelevantprotocolspecifications.Anyparticularityoftheelementformatorcontentisdescribedinthecommentline.Thecommentlineintheheaderofmulti-elementTTCNtables(e.g.ASPs)isusedtoreferencetotheprotocolspecification.Thedetailedcommentsareusedtodescribeanyparticularityofthetable.IntheASPandPDUdeclarations,thecommentscolumnisusedtoidentifyifanelementismandatoryoroptional.m:mandatory;o:optional.IntheASPandPDUdeclarationsthecommentscolumnisfurtherusedtogiveinformationabouttheelementvalue,inparticulariftheelementcontainsafixedsparevalue.Intableswherestructuretypesareusedtheinformationelementandtherelevantstructuredtypehavealwaysthesamename,thatallowstohavethesamestructureasintheprotocolstandardsisusedtodocumenttherelationbetweeninformationelementsinatableandtheirspecificdescriptioninanotherclauseoftheprotocolstandard.6.2.2ConstraintpartTheASPsandPDUsaredefinedinawaythatallrelevantelementareparameterized.Thatimprovesthetransparencyoftheconstraintsinthedynamicpart,asallvalueswhicharerelevantforthetestarealwayspresent.Generallythebaseconstraintcontainsallpossibleparametersandtherelevantformalparameterlistwhichgoeswiththebaseconstraint.IncasewhereaspecificmessageIEisnotusedatallintheATS,thebaseconstraintwillnotcontainsuchanIE.ThebaseconstraintsofthePSTNprotocolcontainallmandatoryIEs.TheoptionalIEsaredefinedinoneelementoftypeOCTETSTRING.TheactualvalueandformatoftheoptionalIEhastobedefinedinthePIXITsaccordingtothePSTNspecificationswhichisimplementedintheIUT.Modifiedconstraintshavethesameparameterlistasthebaseconstraint.Notusedelementsoftheparameterlistaresettoadefaultvalue"ANY"inthedynamicpart.Thenumberofbaseconstraintsisreducedtoaminimum.Thecommentlineofaconstraintcontainsalwaysthereferencetotheusedspecifications.Thedetailedcommentssectorisusedtodescribeanyparticularityofthetable.SIST EN 300 347-4 V3.1.1:2005



ETSIETSIEN300347-4V3.1.1(2001-03)166.2.3DynamicpartSomeTCsneedaparticularinitializationoftheIUTenvironmentconditionstoruntheactualtest,e.g.fortestingre-provisioningprocedures.Suchmessagesequencecanbequitecomplicatedandlong.IncaseswhereaLocalTestStep(LTS)facilitatestheTCstructure,thepreambleandtheconditionsettingaredescribedinaLTScalledLTS_pre_step.AllLTS_pre_stepsaredescribedinthedetailedcommentpartoftheTTCNtable.SomeTCsneedaftertheactualtestaparticularre-initializationoftheIUT,e.g.afterre-provisioning.Suchmessagesequencecanbequitecomplicatedandlong.IncaseswhereaLocalTestStep(LTS)facilitatestheTCstructure,thepostambleandthere-initializationaredescribedinaLTScalledLTS_post_step.AllLTS_post_stepsaredescribedinthedetailedcommentpartoftheTTCNtable.AlleventswhicharedefinedasaconformancerequirementsbytheTP,causeapreliminaryverdictPASSiftherequirementismet.Allinvalideventsarehandledinthedefaulttree.FAILverdictsareonlyassignedinthedefaulttree.ThedefaulttreecontainstheerrorhandlingprocedurefortheparticularTC.Thepreamble,thetestbodyandthepostamblehavedifferentdefaults,whatallowsaspecificverdicthandling,e.g.onlyINCONCverdictsareassignedinthepreamble.Teststepsdonotcontainadefault.Thatallowstoapplythemwithnorestrictionsregardingtheerrorhandling.Allverdictassignmentsarelabelled.AccordingtoISO/IEC9646-3[9],clauseE.2,labelsshouldbewrittentotheconformancelog.Thisallowstoidentifywerethetestfailed.Toallowanexactidentificationinwhichtabletheverdictwasassigned,thenamingconventionasdescribedinclause6.1.3.3isapplied.ThelabelsofthesametypearenumberedsequentiallyiftheyareinthesameTC,teststepordefault.TPswhichonlyreferencetoanotherTP,e.g.BVTPswhichwerealreadydefinedasCATPs,areonlyimplementedones,thusthenumberingoftheTCsisnotalwayscontinues.TPswhicharelistedintheuntestableTPlistinclause5,orwhichreferencetoanotherTP,e.g.BVTPswhichw
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