SIST EN 300 443-5 V1.3.1:2004

Broadband Integrated Services Digital Network (B-ISDN); Digital Subscriber Signalling System No. two (DSS2) protocol; B-ISDN user-network interface layer 3 specification for basic call/bearer control; Part 5: Test Suite Structure and Test Purposes (TSS&TP) specification for the network

To produce a new edition of the standard aligned with the new version of the protocol standard endorsing ITU-Tamendments 2 to 4 and to correct other possible errors, based on contributions.

Širokopasovno digitalno omrežje z integriranimi storitvami (B-ISDN) - Protokol digitalne naročniške signalizacije št. 2 (DSS2) - Specifikacija tretje plasti vmesnika uporabnik-omrežje B-ISDN za krmiljenje osnovnega klica/nosilca - 5. del: Zgradba preskušalnega niza in namen preskušanja (TSS&TP) - Specifikacija za omrežje

General Information

• Status: Published
• Publication Date: 31-Mar-2004
• ICS: 33.080 - Integrated Services Digital Network (ISDN)
• Technical Committee: SPN - Services and Protocols for Networks
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Apr-2004
• Due Date: 01-Apr-2004
• Completion Date: 01-Apr-2004
• Ref Project: ETSI EN 300 443-5 V1.3.1 (2001-06) - Broadband Integrated Services Digital Network (B-ISDN); Digital Subscriber Signalling System No. two (DSS2) protocol; B-ISDN user-network interface layer 3 specification for basic call/bearer control; Part 5: Test Suite Structure and Test Purposes (TSS&TP) specification for the network

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Broadband Integrated Services Digital Network (B-ISDN); Digital Subscriber Signalling System No. two (DSS2) protocol; B-ISDN user-network interface layer 3 specification for basic call/bearer control; Part 5: Test Suite Structure and Test Purposes (TSS&TP) specification for the network33.080Digitalno omrežje z integriranimi storitvami (ISDN)Integrated Services Digital Network (ISDN)ICS:Ta slovenski standard je istoveten z:EN 300 443-5 Version 1.3.1SIST EN 300 443-5 V1.3.1:2004en01-april-2004SIST EN 300 443-5 V1.3.1:2004SLOVENSKI
STANDARD



SIST EN 300 443-5 V1.3.1:2004



ETSIEN300443-5V1.3.1(2001-06)EuropeanStandard(Telecommunicationsseries)BroadbandIntegratedServicesDigitalNetwork(B-ISDN);DigitalSubscriberSignallingSystemNo.two(DSS2)protocol;B-ISDNuser-networkinterfacelayer3specificationforbasiccall/bearercontrol;Part5:TestSuiteStructureandTestPurposes(TSS&TP)specificationforthenetworkSIST EN 300 443-5 V1.3.1:2004



ETSIETSIEN300443-5V1.3.1(2001-06)2ReferenceREN/SPAN-130254-5KeywordsBC,B-ISDN,broadband,DSS2,layer3,network,TSS&TP,UNIETSI650RoutedesLuciolesF-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 300 443-5 V1.3.1:2004



ETSIETSIEN300443-5V1.3.1(2001-06)3ContentsIntellectualPropertyRights.5Foreword.51Scope.62References.63Definitionsandabbreviations.73.1Definitions.73.1.1Definitionsrelatedtoconformancetesting.73.1.2DefinitionsrelatedtoEN300443-1.73.2Abbreviations.74TestSuiteStructure(TSS).85TestPurposes(TP).95.1Introduction.95.1.1TPnamingconvention.95.1.2SourceofTPdefinition.95.1.3Teststrategy.95.1.4Testofcallstates.95.2TPsforthebasiccall/bearercontrol,layer3,network.105.2.1SignallingproceduresatthecoincidentSB/TBandattheTBreferencepoints.105.2.1.1Call/connectionestablishmentattheoriginatinginterface.105.2.1.1.1Connectionidentifier(VPCI/VCI)allocation/selection(01).105.2.1.1.2QOSandtrafficparameterselectionprocedures(04).125.2.1.1.3Invalidcall/connectioncontrolinformation(05).125.2.1.1.4Call/connectionproceeding(06).135.2.1.1.5Call/connectionconfirmationindication(07).135.2.1.1.6Call/connectionacceptance(08).135.2.1.1.7Call/connectionrejection(09).145.2.1.1.8Transitnetworkselection(10).145.2.1.2Call/connectionestablishmentatthedestinationinterface.155.2.1.2.1Incomingcall/connectionrequest(11).155.2.1.2.2Connectionidentifier(VPCI/VCI)allocation/selection(12).155.2.1.2.3Call/connectionconfirmation(15).165.2.1.2.4Call/connectionacceptance(16).175.2.1.3Call/connectionclearing.175.2.1.3.1Exceptionconditions(17).175.2.1.3.2Clearinginitiatedbytheuser(18).175.2.1.3.3Clearinginitiatedbythenetwork(19).185.2.1.3.4Clearcollision(20).185.2.1.4Restartprocedure.195.2.1.4.1SendingRESTART(21).195.2.1.4.2ReceiptofRESTART(22).195.2.1.4.3Remoteinterface(23).225.2.1.5Handlingoferrorconditions.225.2.1.5.1ErrorhandlinginN0(24).225.2.1.5.2ErrorhandlinginN3(25).265.2.1.5.3ErrorhandlinginN4(26).275.2.1.5.4ErrorhandlinginN6(27).295.2.1.5.5ErrorhandlinginN7(28).325.2.1.5.6ErrorhandlinginN9(29).345.2.1.5.7ErrorhandlinginN10-incomingcall(30).375.2.1.5.8ErrorhandlinginN10-outgoingcall(31).405.2.1.5.9ErrorhandlinginN12-incomingcall(32).435.2.1.5.10ErrorhandlinginN12-outgoingcall(33).465.2.1.5.11ErrorhandlinginR0(34).48SIST EN 300 443-5 V1.3.1:2004



ETSIETSIEN300443-5V1.3.1(2001-06)45.2.1.5.12ErrorhandlinginR1(35).505.2.1.6Notificationprocedures(36).535.2.2SignallingproceduresforinterworkingbetweenN-ISDNandB-ISDN.535.2.2.1InterworkingN-ISDN->B-ISDN(37).535.2.2.2InterworkingB-ISDN->N-ISDN(38).545.2.3End-to-endconnectioncompletionindication(39).546Compliance.557Requirementsforacomprehensivetestingservice.55AnnexA(informative):Bibliography.56History.57SIST EN 300 443-5 V1.3.1:2004



ETSIETSIEN300443-5V1.3.1(2001-06)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).Thepresentdocumentispart5ofamulti-partdeliverablecoveringBroadbandIntegratedServicesDigitalNetwork(B-ISDN);DigitalSubscriberSignallingSystemNo.two(DSS2)protocol;B-ISDNuser-networkinterfacelayer3specificationforbasiccall/bearercontrol,asidentifiedbelow:Part1:"Protocolspecification[ITU-TRecommendationQ.2931(1995),modified]";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".NationaltranspositiondatesDateofadoptionofthisEN:15June2001DateoflatestannouncementofthisEN(doa):30September2001DateoflatestpublicationofnewNationalStandardorendorsementofthisEN(dop/e):31March2002DateofwithdrawalofanyconflictingNationalStandard(dow):31March2002SIST EN 300 443-5 V1.3.1:2004



ETSIETSIEN300443-5V1.3.1(2001-06)61ScopeThepresentdocumentspecifiesthenetworkTestSuiteStructureandTestPurposes(TSS&TP)fortheTBreferencepointorcoincidentSBandTBreferencepoint(asdefinedinITU-TRecommendationI.413[5])ofimplementationsconformingtothestandardsforthesignallinguser-networklayer3specificationforbasiccall/bearercontroloftheDigitalSubscriberSignallingSystemNo.two(DSS2)protocolforthepan-EuropeanBroadbandIntegratedServicesDigitalNetwork(B-ISDN),EN300443-1[1].AfurtherpartofthepresentdocumentspecifiestheAbstractTestSuite(ATS)andpartialProtocolImplementationeXtraInformationforTesting(PIXIT)proformabasedonthepresentdocument.2ReferencesThefollowingdocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthepresentdocument.• Referencesareeitherspecific(identifiedbydateofpublicationand/oreditionnumberorversionnumber)ornon-specific.• Foraspecificreference,subsequentrevisionsdonotapply.• Foranon-specificreference,thelatestversionapplies.[1]ETSIEN300443-1(2.0.1):"BroadbandIntegratedServicesDigitalNetwork(B-ISDN);DigitalSubscriberSignallingSystemNo.two(DSS2)protocol;B-ISDNuser-networkinterfacelayer3specificationforbasiccall/bearercontrol;Part1:Protocolspecification[ITU-TRecommendationQ.2931(1995),modified]".[2]ETSIEN300443-2(V1.3.1):"BroadbandIntegratedServicesDigitalNetwork(B-ISDN);DigitalSubscriberSignallingSystemNo.two(DSS2)protocol;B-ISDNuser-networkinterfacelayer3specificationforbasiccall/bearercontrol;Parts2:ProtocolImplementationConformanceStatement(PICS)proformaspecification".[3]ISO/IEC9646-1(1994):"Informationtechnology-OpenSystemsInterconnection-Conformancetestingmethodologyandframework-Part1:Generalconcepts".[4]ISO/IEC9646-2(1994):"Informationtechnology-OpenSystemsInterconnection-Conformancetestingmethodologyandframework-Part2:AbstractTestSuitespecification".[5]ITU-TRecommendationI.413(1993):"B-ISDNuser-networkinterface".[6]ETSIETS300406:"MethodsforTestingandSpecification(MTS);Protocolandprofileconformancetestingspecifications;Standardizationmethodology".SIST EN 300 443-5 V1.3.1:2004



ETSIETSIEN300443-5V1.3.1(2001-06)73Definitionsandabbreviations3.1DefinitionsForthepurposesofthepresentdocument,thetermsanddefinitionsgiveninEN300443-1[1]andthefollowingapply.3.1.1Definitionsrelatedtoconformancetestingabstracttestcase:refertoISO/IEC9646-1[3]AbstractTestMethod(ATM):refertoISO/IEC9646-1[3]AbstractTestSuite(ATS):refertoISO/IEC9646-1[3]ImplementationUnderTest(IUT):refertoISO/IEC9646-1[3]lowertester:refertoISO/IEC9646-1[3]ProtocolImplementationConformanceStatement(PICS):refertoISO/IEC9646-1[3]PICSproforma:refertoISO/IEC9646-1[3]ProtocolImplementationeXtraInformationforTesting(PIXIT):refertoISO/IEC9646-1[3]PIXITproforma:refertoISO/IEC9646-1[3]TestPurpose(TP):refertoISO/IEC9646-1[3]3.1.2DefinitionsrelatedtoEN300443-1network:DSS2protocolentityattheNetworksideoftheuser-networkinterfacewhereaTBreferencepointorcoincidentSBandTBreferencepointappliesnetwork(SB/TB):DSS2protocolentityattheNetworksideoftheuser-networkinterfacewhereacoincidentSBandTBreferencepointappliesnetwork(TB):DSS2protocolentityattheNetworksideoftheuser-networkinterfacewhereaTBreferencepointapplies(useristheprivateISDN)3.2AbbreviationsForthepurposesofthepresentdocument,thefollowingabbreviationsapply:ATMAbstractTestMethodATSAbstractTestSuiteB-ISDNBroadbandIntegratedServicesDigitalNetworkDSS2DigitalSubscriberSignallingSystemNo.twoIUTImplementationUnderTestN0NullcallstateN10ActivecallstateN12ReleaseIndicationcallstateN2OverlapSendingcallstateN3OutgoingCallProceedingcallstateN4CallDeliveredcallstateN6CallPresentcallstateN7CallReceivedcallstateN9IncomingCallProceedingcallstateN-ISDNNarrowbandIntegratedServicesDigitalNetworkPICSProtocolImplementationConformanceStatementSIST EN 300 443-5 V1.3.1:2004



ETSIETSIEN300443-5V1.3.1(2001-06)8PIXITProtocolImplementationeXtraInformationforTestingRest0RestartNullstateRest1RestartRequeststateRest2RestartstateTPTestPurposeTSSTestSuiteStructureVCVirtualChannelVCIVirtualChannelIdentifierVPVirtualPathVPCVirtualPathConnectionVPCIVirtualPathConnectionIdentifier4TestSuiteStructure(TSS)SignallingproceduresatthecoincidentSB/TBandattheTBreferencepointsCall/connectionestablishmentattheoriginatinginterfaceConnectionidentifier(VPCI/VCI)allocation/selection.(01)Associatedsignalling.(02)Non-associatedsignalling.(03)QOSandtrafficparametersselectionprocedures.(04)Invalidcall/connectioncontrolinformation.(05)Call/connectionproceeding.(06)Call/connectionconfirmationindication.(07)Call/connectionacceptance.(08)Call/connectionrejection.(09)Transitnetworkselection.(10)Call/connectionestablishmentatthedestinationinterfaceIncomingcall/connectionrequest.(11)Connectionidentifier(VPCI/VCI)allocation/selection.(12)Associatedsignalling.(13)Non-associatedsignalling.(14)Call/connectionconfirmation.(15)Call/connectionacceptance.(16)Call/connectionclearingExceptionconditions.(17)Clearinginitiatedbytheuser.(18)Clearinginitiatedbythenetwork.(19)Clearcollision.(20)RestartprocedureSendingRESTART.(21)ReceiptofRESTART.(22)Remoteuser.(23)HandlingoferrorconditionsErrorhandlinginN0.(24)ErrorhandlinginN3.(25)ErrorhandlinginN4.(26)ErrorhandlinginN6.(27)ErrorhandlinginN7.(28)ErrorhandlinginN9.(29)ErrorhandlinginN10-incomingcall.(30)ErrorhandlinginN10-outgoingcall.(31)ErrorhandlinginN12-incomingcall.(32)ErrorhandlinginN12-outgoingcall.(33)ErrorhandlinginRest0.(34)ErrorhandlinginRest1.(35)Notificationprocedures.(36)SIST EN 300 443-5 V1.3.1:2004



ETSIETSIEN300443-5V1.3.1(2001-06)9SignallingproceduresforinterworkingbetweenN-ISDNandB-ISDNInterworkingN-ISDN->B-ISDN.(37)InterworkingB-ISDN->N-ISDN.(38)End-to-endcompletionindicationprocedures.(39)Figure1:Testsuitestructure5TestPurposes(TP)5.1IntroductionForeachtestrequirementaTPisdefined.5.1.1TPnamingconventionTPsarenumbered,startingat01,withineachgroup.GroupsareorganizedaccordingtotheTSS.Additionalreferencesareaddedtoidentifytheactualtestsuite(seetable1).Table1:TPidentifiernamingconventionschemeIdentifier:__=layer+typeofIUT:"L3BN"forLayer3Basiccall/bearercontrol,IUT=Network=groupnumber:twocharacterfieldrepresentingthegroupreferenceaccordingtoTSS=sequentialnumber:(01-99)5.1.2SourceofTPdefinitionTheTPsarebasedonEN300443-1[1].5.1.3TeststrategyAsthebasestandardEN300443-1[1]containsnoexplicitrequirementsfortesting,theTPsweregeneratedasaresultofananalysisofthebasestandardandthePICSspecificationEN300443-2[2].TheTPsareonlybasedonconformancerequirementsrelatedtotheexternallyobservablebehaviouroftheIUT,andarelimitedtoconceivablesituationstowhicharealimplementationislikelytobefaced(ETS300406[6]).5.1.4TestofcallstatesManyTPsincludeareferencetotheIUT'sfinalcallstateaftertherealizationoftheTP.InthesecasestheTPincludestherequirementtoensurethattheIUThasenteredthisparticularfinalcallstate.EnsuringthattheIUTisinaparticularcallstateshallberealizedbyfollowingtheproceduresdescribedinclause5.6.11ofEN300443-1[1].Accordingtotheseprocedures,theIUTonreceiptofaSTATUSENQUIRYmessage,shallrespondwithaSTATUSmessageindicating,inthefifthoctetoftheCallstateinformationelement,thecurrentcallstateoftheIUT.ThisexchangeofmessagesisnotmentionedexplicitlyineachTPbutisconsideredtobeimplicitinthereferencetothefinalcallstate.ThiswayofphrasingtheTPshasbeenusedtoavoidover-complicatingthetextandstructureoftheTPsandtoimprovethereadability.SIST EN 300 443-5 V1.3.1:2004



ETSIETSIEN300443-5V1.3.1(2001-06)105.2TPsforthebasiccall/bearercontrol,layer3,networkAllPICSitemsreferredtointhisclauseareasspecifiedinEN300443-2[2]unlessindicatedotherwisebyanothernumberedreference.Unlessspecified:-themessagesindicatedarevalidandcontainatleastthemandatoryinformationelementsandpossiblyoptionalinformationelements;-theinformationelementsindicatedarevalidandcontainatleastthemandatoryparametersandpossiblyoptionalparameters.5.2.1SignallingproceduresatthecoincidentSB/TBandattheTBreferencepointsTestpurposesforEN300443-1[1],clause5.1.5.2.1.1Call/connectionestablishmentattheoriginatinginterfaceTestpurposesforEN300443-1[1],clause5.1.5.2.1.1.1Connectionidentifier(VPCI/VCI)allocation/selection(01)TestpurposesforEN300443-1[1],clause5.1.2.L3BN_01_01EnsurethattheIUTinN0,onreceiptofaSETUPmessage(Connectionidentifierpresent,VPassociatedsignalling=VPassociatedsignalling),-sendsaRELEASECOMPLETEmessage(Causevalue=36)andremainsinN0.Selection:AssociatedsignallingattheoriginatingsideNOTsupported.PICS:NOTMCn1.1.5.2.1.1.1.1Associatedsignalling(02)TestpurposesforEN300443-1[1],clause5.1.2.1.Selection:Associatedsignallingattheoriginatingsidesupported.PICS:MCn1.1.L3BN_02_01EnsurethattheIUTinN0,onreceiptofaSETUPmessage(Connectionidentifierpresent,VPassociatedsignalling=VPassociatedsignalling,preferredexclusive=exclusiveVPCI;anyVCI),whenaVCIisavailableintheVPCcarryingthesignallingVC,-sendsaCALLPROCEEDINGmessage(Connectionidentifierpresent,VPassociatedsignalling=VPassociatedsignalling,preferredexclusive=exclusiveVPCI;exclusiveVCI,virtualchannelidentifierindicatingaspecificVCI)andentersN3.L3BN_02_02EnsurethattheIUTinN0,onreceiptofaSETUPmessage(Connectionidentifierpresent,VPassociatedsignalling=VPassociatedsignalling,preferredexclusive=exclusiveVPCI;exclusiveVCI,virtualchannelidentifierindicatingaspecificVCI),whentherequestedVCIisavailableintheVPCcarryingthesignallingVC,-sendsaCALLPROCEEDINGmessage(Connectionidentifierpresent,VPassociatedsignalling=VPassociatedsignalling,preferredexclusive=exclusiveVPCI;exclusiveVCI,virtualchannelidentifierindicatingtherequestedVCI)andentersN3.L3BN_02_03EnsurethattheIUTinN0,onreceiptofaSETUPmessage(Connectionidentifierpresent,VPassociatedsignalling=VPassociatedsignalling,preferredexclusive=exclusiveVPCI;anyVCI),whennoVCIisavailableintheVPCcarryingthesignallingVC,-sendsaRELEASECOMPLETEmessage(Causevalue=45)andremainsinN0.SIST EN 300 443-5 V1.3.1:2004



ETSIETSIEN300443-5V1.3.1(2001-06)11L3BN_02_04EnsurethattheIUTinN0,onreceiptofaSETUPmessage(Connectionidentifierpresent,VPassociatedsignalling=VPassociatedsignalling,preferredexclusive=exclusiveVPCI;exclusiveVCI,virtualchannelidentifierindicatingaspecificVCI),whentherequestedVCIisnotavailableintheVPCcarryingthesignallingVC,-sendsaRELEASECOMPLETEmessage(Causevalue=35)andremainsinN0.5.2.1.1.1.2Non-associatedsignalling(03)TestpurposesforEN300443-1[1],clause5.1.2.2.L3BN_03_01EnsurethattheIUTinN0,onreceiptofaSETUPmessage(Connectionidentifierpresent,VPassociatedsignalling=explicitindicationofVPCI,preferredexclusive=exclusiveVPCI;anyVCI,virtualpathconnectionidentifierindicatingaspecificVPCI),whenaVCIisavailablewithintherequestedVPCI,-sendsaCALLPROCEEDINGmessage(Connectionidentifierpresent,VPassociatedsignalling=explicitindicationofVPCI,preferredexclusive=exclusiveVPCI;exclusiveVCI,virtualpathconnectionidentifierindicatingtherequestedVPCI,virtualchannelidentifierindicatingaspecificVCI)andentersN3.L3BN_03_02EnsurethattheIUTinN0,onreceiptofaSETUPmessage(Connectionidentifierpresent,VPassociatedsignalling=explicitindicationofVPCI,preferredexclusive=exclusiveVPCI;exclusiveVCI,virtualpathconnectionidentifierindicatingaspecificVPCI,virtualchannelidentifierindicatingaspecificVCI),whentherequestedVCIisavailablewithintherequestedVPCI,-sendsaCALLPROCEEDINGmessage(Connectionidentifierpresent,VPassociatedsignalling=explicitindicationofVPCI,preferredexclusive=exclusiveVPCI;exclusiveVCI,virtualpathconnectionidentifierindicatingtherequestedVPCI,virtualchannelidentifierindicatingtherequestedVCI)andentersN3.L3BN_03_03EnsurethattheIUTinN0,onreceiptofaSETUPmessage(Connectionidentifierabsent),whenaVCIisavailablewithinanyVPCI,-sendsaCALLPROCEEDINGmessage(Connectionidentifierpresent,VPassociatedsignalling=explicitindicationofVPCI,preferredexclusive=exclusiveVPCI;exclusiveVCI,virtualpathconnectionidentifierindicatingaspecificVPCI,virtualchannelidentifierindicatingaspecificVCI)andentersN3.L3BN_03_04EnsurethattheIUTinN0,onreceiptofaSETUPmessage(Connectionidentifierpresent,VPassociatedsignalling=explicitindicationofVPCI,preferredexclusive=exclusiveVPCI;anyVCI,virtualpathconnectionidentifierindicatingaspecificVPCI),whentherequestedVPCIisnotavailable,-sendsaRELEASECOMPLETEmessage(Causevalue=35)andremainsinN0.L3BN_03_05EnsurethattheIUTinN0,onreceiptofaSETUPmessage(Connectionidentifierpresent,VPassociatedsignalling=explicitindicationofVPCI,preferredexclusive=exclusiveVPCI;exclusiveVCI,virtualpathconnectionidentifierindicatingaspecificVPCI,virtualchannelidentifierindicatingaspecificVCI),whentherequestedVPCIisnotavailable,-sendsaRELEASECOMPLETEmessage(Causevalue=35)andremainsinN0.L3BN_03_06EnsurethattheIUTinN0,onreceiptofaSETUPmessage(Connectionidentifierpresent,VPassociatedsignalling=explicitindicationofVPCI,preferredexclusive=exclusiveVPCI;anyVCI,virtualpathconnectionidentifierindicatingaspecificVPCI,virtualchannelidentifierindicatingaspecificVCI),whennoVCIisavailablewithintherequestedVPCI,-sendsaRELEASECOMPLETEmessage(Causevalue=45)andremainsinN0.L3BN_03_07EnsurethattheIUTinN0,onreceiptofaSETUPmessage(Connectionidenti
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