SIST EN 300 324-5 V3.1.1:2005

V interfaces at the digital Local Exchange (LE); V5.1 interface for the support of Access Network (AN); Part 5: Test Suite Structure and Test Purposes (TSS&TP) specification for the network layer (LE 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 V5.1 za podporo dostopovnemu omrežju (AN) – 5. del: Zgradba preskušalnega niza in namen preskušanja (TSS&TP) za omrežno plast na strani krajevne centrale (LE)

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 300 324-5 V3.1.1 (2001-03) - V interfaces at the digital Local Exchange (LE); V5.1 interface for the support of Access Network (AN); Part 5: Test Suite Structure and Test Purposes (TSS&TP) specification for the network layer (LE 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 V5.1 za podporo dostopovnemu omrežju (AN) – 5. del: Zgradba preskušalnega niza in namen preskušanja (TSS&TP) za omrežno plast na strani krajevne centrale (LE)V interfaces at the digital Local Exchange (LE); V5.1 interface for the support of Access Network (AN); Part 5: Test Suite Structure and Test Purposes (TSS&TP) specification for the network layer (LE side)33.040.30Komutacijski in signalizacijski sistemSwitching and signalling systemsICS:Ta slovenski standard je istoveten z:EN 300 324-5 Version 3.1.1SIST EN 300 324-5 V3.1.1:2005en01-januar-2005SIST EN 300 324-5 V3.1.1:2005SLOVENSKI
STANDARD



SIST EN 300 324-5 V3.1.1:2005



ETSIEN300324-5V3.1.1(2001-03)EuropeanStandard(Telecommunicationsseries)VinterfacesatthedigitalLocalExchange(LE);V5.1interfaceforthesupportofAccessNetwork(AN);Part5:TestSuiteStructureandTestPurposes(TSS&TP)specificationforthenetworklayer(LEside)SIST EN 300 324-5 V3.1.1:2005



ETSIETSIEN300324-5V3.1.1(2001-03)2ReferenceREN/SPAN-09101-5KeywordsAN,LE,network,testing,TSS&TP,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 300 324-5 V3.1.1:2005



ETSIETSIEN300324-5V3.1.1(2001-03)3ContentsIntellectualPropertyRights.6Foreword.61Scope.72References.73Definitionsandabbreviations.83.1Definitions.83.2Abbreviations.94TestSuiteStructure(TSS).104.1TSSoverview.104.2Testgroups.114.2.1Protocolgroups.114.2.1.1Controlprotocol.114.2.1.2PSTNprotocol.124.2.2Maintestgroups.124.2.2.1BasicInterconnection(IT)tests.124.2.2.2Capability(CA)tests.124.2.2.3ValidBehaviour(BV)tests.124.2.2.4InopportuneBehaviour(BO)tests.124.2.2.5InvalidBehaviour(BI)tests.124.2.2.6Timer(TI)expiryandcountermismatchtests.124.2.2.6.1TimerexpiryandcountersoftheControlprotocol.134.2.2.6.2TimerexpiryandcountersofthePSTNprotocol.134.2.2.6.3TimerexpiryandcountersoftheLEsystemmanagement.134.3Teststepstructure.144.3.1Statetransitions.144.3.1.1StartupofV5.1interface.144.3.1.2CommoncontrolProtocol(systemmanagement).154.3.1.3Controlprotocol(PSTNportFSM).164.3.1.4Controlprotocol(ISDN-BAportFSM).164.3.1.5PSTNprotocol.164.3.2Preambles.174.3.3Postambles.174.3.4Statusverification.174.3.4.1PSTNprotocol.174.3.4.2Portcontrolprotocol.184.3.4.3Commoncontrolprotocol.184.3.5Commonteststeps.184.4Defaults.184.5AbstractServicePrimitives(ASPs)andProtocolDataUnits(PDUs).194.5.1ASPs.194.5.2PDUs.194.5.2.1Commoncontrolprotocol.194.5.2.2Portcontrolprotocol.194.5.2.3PSTNprotocol.194.5.3Informationelements.194.5.3.1Variablelengthinformationelements.194.5.3.1.1Controlprotocol.194.5.3.1.2PSTNprotocol.204.5.3.2Singleoctetinformationelements.204.5.3.2.1Controlprotocol.204.5.3.2.2PSTNprotocol.204.6TimersandcountersoftheAbstractTestSuite(ATS).20SIST EN 300 324-5 V3.1.1:2005



ETSIETSIEN300324-5V3.1.1(2001-03)45TestPurposes(TPs).215.1Introduction.215.1.1TPnamingconvention.225.1.2SourceofTPdefinition.225.1.3Teststrategy.235.1.4RequirementsnotcoveredbyTPs.235.1.5Initialstate.245.1.6Testanddataconfigurationrequirements.245.2Controlprotocol.245.2.1Basicinterconnectiontests(V5NWKLE/CTRL/IT).245.2.2Capabilitytests(V5NWKLE/CTRL/CA).245.2.3Validbehaviourtests(V5NWKLE/CTRL/BV).255.2.3.1V5NWKLE/CTRL/BV/COM.255.2.3.1.1V5NWKLE/CTRL/BV/COM/TRANS.255.2.3.1.2V5NWKLE/CTRL/BV/COM/REST.255.2.3.1.3V5NWKLE/CTRL/BV/COM/REVY.265.2.3.2V5NWKLE/CTRL/BV/PORT.285.2.3.2.1V5NWKLE/CTRL/BV/PORT/TRANS.285.2.3.2.2V5NWKLE/CTRL/BV/PORT/PSTN.285.2.3.2.3V5NWKLE/CTRL/BV/PORT/ISDNBA.305.2.4Inopportunebehaviourtests(V5NWKLE/CTRL/BO).345.2.4.1V5NWKLE/CTRL/BO/COM.345.2.4.1.1V5NWKLE/CTRL/BO/COM/TRANS.345.2.4.1.2V5NWKLE/CTRL/BO/COM/REVY.355.2.4.2V5NWKLE/CTRL/BO/PORT.355.2.4.2.1V5NWKLE/CTRL/BO/PORT/TRANS.355.2.4.2.2V5NWKLE/CTRL/BO/PORT/ISDNBA.355.2.5Invalidbehaviourtests(V5NWKLE/CTRL/BI).365.2.5.1V5NWKLE/CTRL/BI/COM.365.2.5.1.1V5NWKLE/CTRL/BI/COM/TRANS.365.2.5.2V5NWKLE/CTRL/BI/PORT.375.2.5.2.1V5NWKLE/CTRL/BI/PORT/TRANS.375.2.6Timerexpiryandcountermismatchtests(V5NWKLE/CTRL/TI).385.2.6.1V5NWKLE/CTRL/TI/COM.385.2.6.1.1V5NWKLE/CTRL/TI/COM/TRANS.385.2.6.2V5NWKLE/CTRL/TI/PORT.395.2.6.2.1V5NWKLE/CTRL/TI/PORT/TRANS.395.3PSTNProtocol.395.3.1Basicinterconnectiontests(V5NWKLE/PSTN/IT).395.3.2Capabilitytests(V5NWKLE/PSTN/CA).405.3.3Validbehaviourtests(V5NWKLE/PSTN/BV).405.3.3.1V5NWKLE/PSTN/BV/0.405.3.3.2V5NWKLE/PSTN/BV/1.405.3.3.3V5NWKLE/PSTN/BV/2.415.3.3.4V5NWKLE/PSTN/BV/4.425.3.3.5V5NWKLE/PSTN/BV/5.435.3.3.6V5NWKLE/PSTN/BV/6.445.3.4Inopportunebehaviourtests(V5NWKLE/PSTN/BO).445.3.4.1V5NWKLE/PSTN/BO/0.455.3.4.2V5NWKLE/PSTN/BO/1.465.3.4.3V5NWKLE/PSTN/BO/2.475.3.4.4V5NWKLE/PSTN/BO/4.485.3.4.5V5NWKLE/PSTN/BO/6.495.3.5Invalidbehaviourtests(V5NWKLE/PSTN/BI).505.3.5.1V5NWKLE/PSTN/BI/1.505.3.5.2V5NWKLE/PSTN/BI/4.515.3.6Timerexpiryandcountermismatchtests(V5NWKLE/PSTN/TI).515.3.6.1V5NWKLE/PSTN/TI/0.515.3.6.2V5NWKLE/PSTN/TI/1.525.3.6.3V5NWKLE/PSTN/TI/2.525.3.6.4V5NWKLE/PSTN/TI/4.535.3.6.5V5NWKLE/PSTN/TI/5.54SIST EN 300 324-5 V3.1.1:2005



ETSIETSIEN300324-5V3.1.1(2001-03)55.3.6.6V5NWKLE/PSTN/TI/6.54Bibliography.55History.56SIST EN 300 324-5 V3.1.1:2005



ETSIETSIEN300324-5V3.1.1(2001-03)6IntellectualPropertyRightsIPRsessentialorpotentiallyessentialtothepresentdocumentmayhavebeendeclaredtoETSI.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).Thepresentdocumentispart5ofamulti-partdeliverablecoveringtheV5.1interfaceforthesupportofAccessNetwork(AN)asdescribedbelow:Part1:"V5.1interfacespecification";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:16March2001DateoflatestannouncementofthisEN(doa):30June2001DateoflatestpublicationofnewNationalStandardorendorsementofthisEN(dop/e):31December2001DateofwithdrawalofanyconflictingNationalStandard(dow):31December2001SIST EN 300 324-5 V3.1.1:2005



ETSIETSIEN300324-5V3.1.1(2001-03)71ScopeThisfifthpartofEN300324containstheTestSuiteStructure(TSS)andTestPurposes(TPs)fortheNetworklayer(NWK)andpartsofthesystemmanagementoftheLocalExchange(LE)sideofaV5.1interface.Theobjectiveofthepresentdocumentistoprovideconformancetestsgivingahighprobabilityofinter-operabilityofanAccessNetwork(AN)andaLEfromdifferentmanufacturersovertheV5.1interface.ThepresentdocumentcoverstheproceduresdescribedinEN300324-1[1]only.ISO/IEC9646-1[4]isusedasthebasisforthemethodologyofconformancetesting.ConcerningthePublicSwitchedTelephoneNetwork(PSTN)protocoltesting,onlytheproceduresdefinedinEN300324-1[1]arecoveredbythetestsdefinedinthepresentdocument.AnImplementationUnderTest(IUT),however,willhaveimplementedanationalPSTNprotocolpartaswell.ThisrequiresthatthetestergeneratesmessagescontainingthenationalPSTNprotocolspecificoptionalInformationElements(IEs),otherwisetheIUTwouldnotactonmessagesaccordingtothePSTNprotocolproceduredefinition.However,thisdoesnotprovideacomprehensivetestofthenationalPSTNprotocolmappingspecification,whichisoutsidethescopeofthepresentdocument.AsthetestsusePSTNmessagescontainingoptionalIEsaccordingtonationalspecifications,thetestresultisonlyvalidfortheimplementednationalmappingoftheV5.1PSTNprotocol.Thepresentdocumentdoesnotcovertestsrelatedtofunctionsofthebearerchannel.ThosefunctionsshouldbetestedinconjunctionwithtestingthenationalPSTNprotocolmappingspecification.ThepresentdocumentcontainsnorequirementsconcerningNWKtestsforIntegratedServicesDigitalNetworkBasicAccess(ISDN-BA).2ReferencesThefollowingdocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthepresentdocument.• Referencesareeitherspecific(identifiedbydateofpublication,editionnumber,versionnumber,etc.)ornon-specific.• Foraspecificreference,subsequentrevisionsdonotapply.• Foranon-specificreference,thelatestversionapplies.• Anon-specificreferencetoanETSshallalsobetakentorefertolaterversionspublishedasanENwiththesamenumber.[1]ETSIEN300324-1(V2.1.1):"VinterfacesatthedigitalLocalExchange(LE);V5.1interfaceforthesupportofAccessNetwork(AN);Part1:V5.1interfacespecification".[2]ETSIEN300324-2:"VinterfacesatthedigitalLocalExchange(LE);V5.1interfaceforthesupportofAccessNetwork(AN);Part2:ProtocolImplementationConformanceStatement(PICS)proforma".[3]ISO7498:"InformationProcessingSystems-OpenSystemsInterconnection-BasicReferenceModel".[4]ISO/IEC9646-1:"Informationtechnology-OpenSystemsInterconnection-Conformancetestingmethodologyandframework-Part1:Generalconcepts".SIST EN 300 324-5 V3.1.1:2005



ETSIETSIEN300324-5V3.1.1(2001-03)83Definitionsandabbreviations3.1DefinitionsForthepurposesofthepresentdocument,thefollowingtermsanddefinitionsapply,togetherwiththosegiveninEN300324-1[1]:abstracttestcase:refertoISO/IEC9646-1[4]abstracttestsuite:refertoISO/IEC9646-1[4]currentprovisioningvariant:identifierforthepresentlyactivedatasetdatalinklayer:refertoISO7498[3]implementationundertest:refertoISO/IEC9646-1[4]incorrectinformationelement:specifiedinformationelementcarryinginformationtypesnotdefinedinEN300324-1[1]invalidPSTNinformationelement:PSTNinformationelementnotaccordingtonationalspecificrequirementsinvalidprotocoldataunit:PDUwhichcontainsanincorrectmessageformatinvalidPSTNmessage:PSTNmessagecarryinginformationelementsnotaccordingtonationalspecificrequirementslowertester:refertoISO/IEC9646-1[4]networklayer:refertoISO7498[3]newprovisioningvariant:identifierforthedatasetwhichwasannouncedtotheIUTtobecomethenextactivedatasetthroughreprovisioningphysicallayer:refertoISO7498[3]ProtocolImplementationConformanceStatement(PICS):refertoISO/IEC9646-1[4]PICSproforma:refertoISO/IEC9646-1[4]specifiedinformationelement:informationelementidentifierdefinedinEN300324-1[1]systemundertest:refertoISO/IEC9646-1[4]testpurpose:refertoISO/IEC9646-1[4]unknownprovisioningvariant:identifierforanon-availabledatasetunspecifiedinformationelement:informationelementidentifiernotdefinedinEN300324-1[1]validinformationelement:PSTNinformationelementaccordingtonationalspecificrequirementsvalidPSTNmessage:PSTNmessagecarryinginformationelementsaccordingtonationalspecificrequirementsSIST EN 300 324-5 V3.1.1:2005



ETSIETSIEN300324-5V3.1.1(2001-03)93.2AbbreviationsForthepurposesofthepresentdocument,thefollowingabbreviationsapply:ANAccessNetworkASPAbstractServicePrimitiveATCAbstractTestCaseATSAbstractTestSuiteBIInvalidBehaviourBOInopportuneBehaviourBVValidBehaviourCACapabilityCOMCommoncontrolprotocolCTRLControlFEFunctionElementFSMFiniteStateMachineIDIdentifierIEInformationElementISDNIntegratedServicesDigitalNetworkISDN-BAISDN-BasicAccessITBasicInterconnectionIUTImplementationUnderTestL3addrLayer3addressLELocalExchangeLTLowerTesterMDUManagementDataUnitMPHManagementPhysicalLayerNWKNetworkLayerPDUProtocolDataUnitPICSProtocolImplementationConformanceStatementsPSTNPublicSwitchedTelephoneNetworkRESTRestartREVYVerifyandReprovisioningSUTSystemUnderTestTITimerTPTestPurposeTSSTestSuiteStructureSIST EN 300 324-5 V3.1.1:2005



ETSIETSIEN300324-5V3.1.1(2001-03)104TestSuiteStructure(TSS)4.1TSSoverviewFigure1showsthestructureoftheV5.1LEsideNWKtestsuite.V5NWKLEITCABVCTRLCOMTRANS/PROTOCOLSYS_MAN/RESTSYS_MAN/REVYTRANS/PROTOCOLPORTPSTNISDN-BACOMTRANS/PROTOCOLBITRANS/PROTOCOLPORTCOMTRANS/PROTOCOLTRANS/PROTOCOLPORTTIITCABVPSTNSTATESTATESTATESTATEBOBITIBOCOMTRANS/PROTOCOLSYS_MAN/REVYPORTTRANS/PROTOCOLISDN-BAFigure1:NWKLETSSSIST EN 300 324-5 V3.1.1:2005



ETSIETSIEN300324-5V3.1.1(2001-03)114.2TestgroupsFigure2givesanoverviewofthevariousprotocolentitiesofaV5.1interface.Table1mapseachprotocolentityontestedprotocolgroups.LE_PSTN_port_FSMLE_ISDN_port_FSMLE_PSTNLE_SMLE_PSTN_DLLE_CTRLLE_V5_FSMDL-DATAMDU-CTRLMPHLE_CTRL_DLMPHPHDL-DATAFEMDU-CTRLPH-DATAMPHV5PH-DATAnationalPSTNprotocolFEL2ISDNmanagementPHMPHMDLMDLMPHFigure2:NetworkLayerLE-protocolentityoverviewTable1:Namesusedinfigure2thatcorrespondtoEN300324-1NWKprotocolentitiesProtocolentitiesdefinedinEN300324-1[1]ProtocolgroupreferencesLE_PSTN_port_FSMLE_PSTN_user_port_FSM4.2.1.1LE_ISDN_port_FSMLE_ISDN-BA_user_port_FSM4.2.1.1LE_CTRLLE_control_protocol4.2.1.1LE_SYSLE_system_management4.2.1.1LE_PSTNLE_PSTN_protocol4.2.1.24.2.1Protocolgroups4.2.1.1ControlprotocolAlltestsintheControlprotocol(V5NWKLE/CTRL)testgroupareintendedtoverifyasthoroughlyaspossiblethevariousproceduresoftheLE_control_protocolentity.Dependingonprovisioningthefollowingconfigurationsarecovered:LE_system_management:thestartup,restart,re-provisioningandverificationproceduresfornormaloperationoftheLE_system_management(V5NWKLE/CTRL/BV/COM/REST,V5NWKLE/CTRL/BV/COM/REVYandV5NWKLE/CTRL/BO/COM/REVY)aretested.LE_control_protocol:thenormalandexceptionalproceduresoftheLE_control_protocolareverifiedinthetestgroupsV5NWKLE/CTRL/BV/COM/TRANS,V5NWKLE/CTRL/BO/COM/TRANS,V5NWKLE/CTRL/TI/COM/TRANS,V5NWKLE/CTRL/BV/PORT/TRANS,V5NWKLE/CTRL/BO/PORT/TRANSandV5NWKLE/CTRL/TI/PORT/TRANS.ContentsoftheLE_control_protocolvaluesarenotverified(e.g.thecontrolfunctionID).TheerrorhandlingproceduresareverifiedintestgroupsV5NWLKE/CTRL/BI/COM/TRANSandV5NWLKE/CTRL/BI/PORT/TRANS.LE_PSTN_user_port:theblocking,blockingrequestandco-ordinatedunblockingproceduresoftheLE_PSTN_user_port_FSMareverifiedinthetestgroupV5NWKLE/CTRL/BV/PORT/PSTN.TheinterworkingoftheLE_PSTN_user_port_FSMandtheLE_PSTNprotocolentityistestedviatheLE_system_management.LE_ISDN-BA_user_port:theblocking,blockingrequest,co-ordinatedunblockingandactivation/deactivationproceduresoftheLE_ISDN-BA_user_port_FSMareverifiedinthetestgroupsV5NWKLE/CTRL/BV/PORT/ISDNBAandV5NWKLE/CTRL/BO/PORT/ISDNBA.SIST EN 300 324-5 V3.1.1:2005



ETSIETSIEN300324-5V3.1.1(2001-03)124.2.1.2PSTNprotocolAlltestsinthePSTNprotocol(V5NWKLE/PSTN)testgroupareintendedtoverifyasthoroughlyaspossiblethevariousproceduresoftheLE_PSTNprotocolentity.ThefollowingPSTNproceduresarecovered:-allpathrelatednormaloperationprocedures;-significantpathrelatedexceptionalprocedures;-thestatusenquiryprocedure;-thelayer3errordetectionprocedure;-theerrorhandlingprocedures;-theportblockingprocedure;-therestartprocedure.4.2.2Maintestgroups4.2.2.1BasicInterconnection(IT)testsTheITtestsubgroupcontainsabasicsetofTPswhichassuresthatthereisasufficientconformanceforinterconnectionandthatthechosenparametersarevalidfortheconfiguration.4.2.2.2Capability(CA)testsCapabilitytestingprovidesalimitedtestingtoascertainthecapabilitiesstatedinthePICScanbeobserved.4.2.2.3ValidBehaviour(BV)testsPredefinedstatetransitionsareconsideredasvalid.TheTPsintheBVtestsubgroupcoverasfarasreasonabletheverificationofthenormalandexceptionalproceduresofthevariousFiniteStateMachines(FSMs).Avalidtestisatestwherethemessagesequenceandthemessagecontentsareconsideredasvalid(noerrorindicationshallbeindicated).4.2.2.4InopportuneBehaviour(BO)testsThistestgroupisintendedtoverifythattheIUTisabletoreactproperlyinthecaseaninopportuneprotocoleventoccurring.Suchaneventissyntacticallycorrectbutoccurswhenitisnotexpectedandanerrorindicationiscaused.4.2.2.5InvalidBehaviour(BI)testsThistestsubgroupisintendedtoverifythattheIUTisabletoreactproperlyhavingreceivedaninvalidProtocolDataUnit(PDU).AninvalidPDUisd
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