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)

Update the test specifications to be in line with the 3rd edition of the base protocol standard.

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: 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 300 347-4 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)

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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