SIST EN 301 003-3 V1.2.1:2004

• Abstract:

  Correct errors in edition 1 of the standard EN 301 003-3and make other possible modifications based on contributions.

• 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 301 003-3 V1.2.1 (2000-10) - Broadband Integrated Services Digital Network (B-ISDN); Digital Subscriber Signalling System No. two (DSS2) protocol; Connection characteristics; Peak cell rate modification by the connection owner; Part 3: Test Suite Structure and Test Purposes (TSS&TP) specification for the user

SIST EN 301 003-3 V1.2.1:2004 is the Slovenian adoption of ETSI EN 301 003-3 V1.2.1, published by SIST. It defines the Test Suite Structure and Test Purposes (TSS&TP) for user-side conformance testing of Broadband Integrated Services Digital Network (B-ISDN) Digital Subscriber Signalling System No. two (DSS2) peak cell rate modification by the connection owner. It is written for people who need to derive, select, or run conformance tests against implementations of EN 301 003-1.

What does SIST EN 301 003-3 V1.2.1 specify?

SIST EN 301 003-3 V1.2.1 specifies the user TSS&TP for implementations at the TB reference point, or the coincident SB and TB reference point, as used in the B-ISDN DSS2 user-network interface. In practice, it tells test engineers which behaviors to test, how the test groups are organized, and how those test purposes relate to the protocol and PICS information.

The standard is organized into clauses for scope, references, definitions and abbreviations, Test Suite Structure, Test Purposes, compliance, and requirements for a comprehensive testing service. Clause 5 is the core of the document because it turns the protocol behavior into named test purposes for the user side.

What are the key requirements of SIST EN 301 003-3 V1.2.1?

Test suite structure and naming

Clause 4 groups the test purposes around signaling procedures at the coincident SB/TB and TB reference points, and then splits them into modification procedures at the requesting entity and at the responding entity. Each of those groups is further divided into valid behavior, timers, and handling of error conditions.

Clause 5.1 sets the naming convention for test purposes. Test purposes are numbered within groups, and the identifier scheme uses the suite name, the group number, and a sequential number. This matters because it lets a test suite, a test log, and a PICS selection all refer to the same case unambiguously.

How the test purposes are built

SIST EN 301 003-3 V1.2.1 bases its test purposes on EN 301 003-1 and generates them by analyzing the base protocol specification together with the PICS proforma in EN 301 003-2. The text says the test purposes focus on externally observable behavior and on situations a real implementation is likely to meet.

Clause 5.1.4 also explains how call-state verification works. When a test purpose depends on the final call state, the IUT is checked by a STATUS ENQUIRY and a STATUS response that reports the current call state. For a reader, that means the test does not just check one message exchange - it also checks that the implementation ends up in the expected call state.

What the main test groups cover

The requesting-entity tests cover how the IUT initiates a peak cell rate modification, how it reacts to MODIFYACKNOWLEDGE, MODIFYREJECT, STATUS, RELEASE, and RELEASE COMPLETE, and how it handles timer expiry. The responding-entity tests cover how the IUT reacts to MODIFYREQUEST and CONNECTIONAVAILABLE, including whether the ATM traffic descriptor is compatible.

The error-handling cases are a major part of the standard. They cover protocol discriminator errors, unused call references, missing or malformed information elements, unrecognized information elements, and different information-element action indicators such as clearing the call, reporting status, ignoring the message, or proceeding. In practice, this is the part that helps a tester prove that the implementation behaves safely when it receives bad signaling.

What compliance means

Clause 6 says a compliant Abstract Test Suite (ATS) must use a suitable subset of the TSS, keep the naming conventions, preserve the relationship between test groups, TP entries, and PICS items, and follow ISO/IEC 9646-2. Clause 7 adds that anyone claiming to provide a comprehensive testing service for network equipment conforming to EN 301 003-1 shall use the Remote test method as a minimum.

What terms does SIST EN 301 003-3 V1.2.1 define?

• Abstract Test Method (ATM) - The testing approach used to structure the abstract tests.
• Abstract Test Suite (ATS) - The set of abstract test cases derived from the test purposes.
• Implementation Under Test (IUT) - The implementation being evaluated for conformance.
• Protocol Implementation Conformance Statement (PICS) - The claim of supported protocol features used to select test cases.
• Protocol Implementation eXtra Information for Testing (PIXIT) - Extra implementation-specific information needed to run the tests.
• Test Purpose (TP) - A statement of what one test case is intended to verify.
• Test Suite Structure (TSS) - The grouping of test purposes into the test suite layout.

Who uses SIST EN 301 003-3 V1.2.1?

SIST EN 301 003-3 V1.2.1 is used by conformance test laboratories, protocol implementers, and equipment suppliers working on B-ISDN DSS2 user-side behavior. It is also useful to quality managers and buyers who need to understand what a test program should cover when checking peak cell rate modification by the connection owner.

The standard helps these users select tests from a PICS, build an ATS, and verify message handling, call-state handling, and timer behavior against the protocol requirements.

What changed in SIST EN 301 003-3 V1.2.1 from the previous edition?

SIST EN 301 003-3 V1.2.1 corrects errors in edition 1 of EN 301 003-3 and includes other possible modifications based on contributions.

Which standards are used with SIST EN 301 003-3 V1.2.1?

• ETS 300 406 - Gives the testing and specification methodology used for protocol and profile conformance test specifications.
• EN 300 443-1 - Provides the user-network layer 3 specification for basic call/bearer control that is referenced for call-state and signaling context.
• EN 301 003-1 - Defines the protocol specification for peak cell rate modification by the connection owner that this test part verifies.
• EN 301 003-2 - Provides the PICS proforma used to select test purposes.
• ITU-T Recommendation I.413 - Supplies the B-ISDN user-network interface reference points.
• ISO/IEC 9646-1 - Gives the general conformance testing framework and terms.
• ISO/IEC 9646-2 - Defines abstract test suite specification rules used by the compliance clause.
• ITU-T Recommendation Q.2963.1 - Gives the underlying DSS2 connection modification specification for peak cell rate modification by the connection owner.
• EN 301 003-4, EN 301 003-5, EN 301 003-6 - The companion parts listed by the foreword for ATS/PIXIT and network-side testing.

What does the SIST EN 301 003-3 V1.2.1 document contain?

The standard contains the test suite structure, the naming convention for test purposes, and a long set of individual test purposes for valid behavior, timers, and error conditions. Table 1 defines the TP identifier scheme, and Figure 1 shows the test suite structure.

Clause 5 is the most detailed part and lists the message exchanges and call-state checks for both the requesting and responding entity. That makes the document a working basis for building conformance tests, not a protocol description and not a product specification.

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; Connection characteristics; Peak cell rate modification by the connection owner; Part 3: Test Suite Structure and Test Purposes (TSS&TP) specification for the user33.080Digitalno omrežje z integriranimi storitvami (ISDN)Integrated Services Digital Network (ISDN)ICS:Ta slovenski standard je istoveten z:EN 301 003-3 Version 1.2.1SIST EN 301 003-3 V1.2.1:2004en01-april-2004SIST EN 301 003-3 V1.2.1:2004SLOVENSKI
STANDARD
ETSIEN301003-3V1.2.1(2000-10)EuropeanStandard(Telecommunicationsseries)BroadbandIntegratedServicesDigitalNetwork(B-ISDN);DigitalSubscriberSignallingSystemNo.two(DSS2)protocol;Connectioncharacteristics;Peakcellratemodificationbytheconnectionowner;Part3:TestSuiteStructureandTestPurposes(TSS&TP)specificationfortheuserSIST EN 301 003-3 V1.2.1:2004

ETSIETSIEN301003-3V1.2.1(2000-10)2ReferenceREN/SPAN-05242-3KeywordsATM,B-ISDN,DSS2,TSS&TPETSI650RoutedesLuciolesF-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 301 003-3 V1.2.1:2004

ETSIETSIEN301003-3V1.2.1(2000-10)3ContentsIntellectualPropertyRights.4Foreword.41Scope.52References.53Definitionsandabbreviations.63.1Definitions.63.1.1Definitionsrelatedtoconformancetesting.63.1.2DefinitionsrelatedtoEN301003-1.63.2Abbreviations.64TestSuiteStructure(TSS).75TestPurposes(TP).75.1Introduction.75.1.1TPnamingconvention.75.1.2SourceofTPdefinition.75.1.3Teststrategy.85.1.4Testofcallstates.85.2TPsforthePeakcellratemodification,user.85.2.1SignallingproceduresatthecoincidentSB/TBandattheTBreferencepoints.85.2.1.1Modificationproceduresattherequestingentity.85.2.1.1.1Validbehaviour(01).85.2.1.1.2Timers(02).95.2.1.1.3Handlingoferrorconditions(03).95.2.1.2Modificationproceduresattherespondingentity.125.2.1.2.1Validbehaviour(04).125.2.1.2.2Timers(05).125.2.1.2.3Handlingoferrorconditions(06).126Compliance.177Requirementsforacomprehensivetestingservice.17Bibliography.18History.19SIST EN 301 003-3 V1.2.1:2004

ETSIETSIEN301003-3V1.2.1(2000-10)4IntellectualPropertyRightsIPRsessentialorpotentiallyessentialtothepresentdocumentmayhavebeendeclaredtoETSI.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).Thepresentdocumentispart3ofamulti-partstandardcoveringtheDigitalSubscriberSignallingSystemNo.2(DSS2)protocolspecificationfortheB-ISDNPeakcellratemodificationbytheconnectionowner,asidentified:Part1:"Protocolspecification[ITU-TRecommendationQ.2963.1[8](1996),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:29September2000DateoflatestannouncementofthisEN(doa):31December2000DateoflatestpublicationofnewNationalStandardorendorsementofthisEN(dop/e):30June2001DateofwithdrawalofanyconflictingNationalStandard(dow):30June2001SIST EN 301 003-3 V1.2.1:2004

ETSIETSIEN301003-3V1.2.1(2000-10)51ScopeThisthirdpartofEN301003specifiestheuserTestSuiteStructureandTestPurposes(TSS&TP)fortheTBreferencepointorcoincidentSBandTBreferencepoint(asdefinedinITU-TRecommendationI.413[5])ofimplementationsconformingtothestandardsforthesignallinguser-networklayer3specificationforPeakcellratemodificationbytheconnectionowneroftheDigitalSubscriberSignallingSystemNo.2(DSS2)protocolforthepan-EuropeanBroadbandIntegratedServicesDigitalNetwork(B-ISDN),EN301003-1[3].AfurtherpartofthepresentdocumentspecifiestheAbstractTestSuite(ATS)andpartialProtocolImplementationeXtraInformationforTesting(PIXIT)proformabasedonthepresentdocument.2ReferencesThefollowingdocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthepresentdocument.• Referencesareeitherspecific(identifiedbydateofpublication,editionnumber,versionnumber,etc.)ornon-specific.• Foraspecificreference,subsequentrevisionsdonotapply.• Foranon-specificreference,thelatestversionapplies.[1]ETSIETS300406:"MethodsforTestingandSpecification(MTS);Protocolandprofileconformancetestingspecifications;Standardizationmethodology".[2]ETSIEN300443-1(V1.3):"BroadbandIntegratedServicesDigitalNetwork(B-ISDN);DigitalSubscriberSignallingSystemNo.two(DSS2)protocol;B-ISDNuser-networkinterfacelayer3specificationforbasiccall/bearercontrol;Part1:Protocolspecification[ITU-TRecommendationQ.2931(1995),modified]".[3]ETSIEN301003-1(V1.1):"BroadbandIntegratedServicesDigitalNetwork(B-ISDN);DigitalSubscriberSignallingSystemNo.two(DSS2)protocol;Connectioncharacteristics;Peakcellratemodificationbytheconnectionowner;Part1:Protocolspecification[ITU-TRecommendationQ.2963.1(1996),modified]".[4]ETSIEN301003-2(V1.1):"BroadbandIntegratedServicesDigitalNetwork(B-ISDN);DigitalSubscriberSignallingSystemNo.two(DSS2)protocol;Connectioncharacteristics;Peakcellratemodificationbytheconnectionowner;Part2:ProtocolImplementationConformanceStatement(PICS)proformaspecification".[5]ITU-TRecommendationI.413(1993):"B-ISDNuser-networkinterface".[6]ISO/IEC9646-1:"InformationTechnology-OpenSystemsInterconnection-Conformancetestingmethodologyandframework-Part1:Generalconcepts".[7]ISO/IEC9646-2:"InformationTechnology-OpenSystemsInterconnection-Conformancetestingmethodologyandframework-Part2:AbstractTestSuitespecification".[8]ITU-TRecommendationQ.2963.1:"DigitalSubscriberSignallingSystemNo.2-Connectionmodification:peakcellratemodificationbytheconnectionowner".SIST EN 301 003-3 V1.2.1:2004

ETSIETSIEN301003-3V1.2.1(2000-10)63Definitionsandabbreviations3.1DefinitionsForthepurposesofthepresentdocument,thetermsanddefinitionsgiveninEN301003-1[3]andEN300443-1[2]andthefollowingapply:3.1.1Definitionsrelatedtoconformancetestingabstracttestcase:refertoISO/IEC9646-1[6]AbstractTestMethod(ATM):refertoISO/IEC9646-1[6]AbstractTestSuite(ATS):refertoISO/IEC9646-1[6]ImplementationUnderTest(IUT):refertoISO/IEC9646-1[6]lowertester:refertoISO/IEC9646-1[6]ProtocolImplementationConformanceStatement(PICS):refertoISO/IEC9646-1[6]PICSproforma:refertoISO/IEC9646-1[6]ProtocolImplementationeXtraInformationforTesting(PIXIT):refertoISO/IEC9646-1[6]PIXITproforma:refertoISO/IEC9646-1[6]TestPurpose(TP):refertoISO/IEC9646-1[6]3.1.2DefinitionsrelatedtoEN301003-1user:DSS2protocolentityattheUsersideoftheuser-networkinterfacewhereaTBreferencepointorcoincidentSBandTBreferencepointappliesuser(SB/TB):DSS2protocolentityattheUsersideoftheuser-networkinterfacewhereacoincidentSBandTBreferencepointappliesuser(TB):DSS2protocolentityattheUsersideoftheuser-networkinterfacewhereaTBreferencepointapplies(userisaprivateISDN)3.2AbbreviationsForthepurposesofthepresentdocument,thefollowingabbreviationsapply:ATMAbstractTestMethodATSAbstractTestSuiteCRCallReferenceIE_AIInformationelementactionindicatorIE_flagInformationelementinstructionindicatorflagIUTImplementationUnderTestPCRPeakCellRatePICSProtocolImplementationConformanceStatementPIXITProtocolImplementationeXtraInformationforTestingTPTestPurposeTSSTestSuiteStructureU0NulllinkstateU1CallInitiatedlinkstateU10ActivelinkstateU12DisconnectIndicationcallstateU13ModifyRequestedcallstateSIST EN 301 003-3 V1.2.1:2004

ETSIETSIEN301003-3V1.2.1(2000-10)7U3OutgoingCallProceedinglinkstateU4CallDeliveredlinkstateU6CallPresentlinkstateU7CallReceivedlinkstateU8ConnectRequestlinkstateU9IncomingCallProceedinglinkstate4TestSuiteStructure(TSS)SignallingproceduresatthecoincidentSB/TBandattheTBreferencepointsModificationproceduresattherequestingentity.Validbehaviour.(01)Handlingoferrorconditions.(02)Timers.(03)Modificationproceduresattherespondingentity.Validbehaviour.(04)Handlingoferrorconditions.(05)Timers.(06)Figure1:Testsuitestructure5TestPurposes(TP)5.1IntroductionForeachtestrequirementaTPisdefined.5.1.1TPnamingconventionTPsarenumbered,startingat01,withineachgroup.GroupsareorganizedaccordingtotheTSS.Additionalreferencesareaddedtoidentifytheactualtestsuite(seetable1).Table1:TPidentifiernamingconventionschemeIdentifier:__=layer+typeofIUT:"MODU"forMODification,IUT=User=groupnumber:twocharacterfieldrepresentingthegroupreferenceaccordingtoTSS=sequentialnumber:(01-99)5.1.2SourceofTPdefinitionTheTPsarebasedonEN301003-1[3].SIST EN 301 003-3 V1.2.1:2004

ETSIETSIEN301003-3V1.2.1(2000-10)85.1.3TeststrategyAsthebasestandardEN301003-1[3]containsnoexplicitrequirementsfortesting,theTPsweregeneratedasaresultofananalysisofthebasestandardandthePICSspecificationEN301003-2[4].TheTPsareonlybasedonconformancerequirementsrelatedtotheexternallyobservablebehaviouroftheIUT,andarelimitedtoconceivablesituationstowhicharealimplementationislikelytobefaced(ETS300406[1]).5.1.4TestofcallstatesManyTPsincludeareferencetotheIUT'sfinalcallstateaftertherealizationoftheTP.InthesecasestheTPincludestherequirementtoensurethattheIUThasenteredthisparticularfinalcallstate.EnsuringthattheIUTisinaparticularcallstateshallberealizedbyfollowingtheproceduresdescribedinclause5.6.11ofEN300443-1[2].Accordingtotheseprocedures,theIUTonreceiptofaSTATUSENQUIRYmessage,shallrespondwithaSTATUSmessageindicating,inthefifthoctetoftheCallstateinformationelement,thecurrentcallstateoftheIUT.ThisexchangeofmessagesisnotmentionedexplicitlyineachTPbutisconsideredtobeimplicitinthereferencetothefinalcallstate.ThiswayofphrasingtheTPshasbeenusedtoavoidover-complicatingthetextandstructureoftheTPsandtoimprovethereadability.5.2TPsforthePeakcellratemodification,userAllPICSitemsreferredtointhisclauseareasspecifiedinEN301003-2[4]unlessindicatedotherwisebyanothernumberedreference.Unlessspecified:-themessagesindicatedarevalidandcontainatleastthemandatoryinformationelementsandpossiblyoptionalinformationelements;-theinformationelementsindicatedarevalidandcontainatleastthemandatoryparametersandpossiblyoptionalparameters.5.2.1SignallingproceduresatthecoincidentSB/TBandattheTBreferencepointsNOTE:Unlessotherwisespecified,theconnectiondefinedbytherequestedATMtrafficdescriptorisavailableforuse.5.2.1.1Modificationproceduresattherequestingentity.TestpurposesforEN301003-1[3]clause9.1.Selection:TheIUTsupporttherequirementsforthemodificationrequestingentity.PICS:R2.15.2.1.1.1Validbehaviour(01)MODU_01_01EnsurethattheIUTinU10,inordertoinitiateaPCRmodificationrequest,-sendsaMODIFYREQUESTmessageandentersU13.MODU_01_02EnsurethattheIUTinU13,onreceiptofaMODIFYACKNOWLEDGEmessageincludingaBroadbandreporttypeinformationelementindicating"modificationconfirmation",-sendsaCONNECTIONAVAILABLEmessageandentersU10.MODU_01_03EnsurethattheIUTinU13,onreceiptofaMODIFYACKNOWLEDGEmessagewithoutBroadbandreporttypeinformationelement,-sendsnomessageandentersU10.SIST EN 301 003-3 V1.2.1:2004

ETSIETSIEN301003-3V1.2.1(2000-10)9MODU_01_04EnsurethattheIUTinU13,onreceiptofaMODIFYREJECTmessage,-sendsnomessageandentersU10.MODU_01_05EnsurethattheIUTinU13,onreceiptofaSTATUSmessage(callstate:10,causevalue:97or101,diagnostic""identifyingoftheMODIFYREQUESTmessage),-sendsnomessageandentersU10.MODU_01_06EnsurethattheIUTinU13,onreceiptofaSTATUSmessage(callstate:10,causevalue:97or101,withoutdiagnostic""identifyingoftheMODIFYREQUESTmessage),-sendsaSTATUSENQUIRYmessageandremainsinU13.MODU_01_07EnsurethattheIUTinU13,(havingsentaSTATUSENQUIRYmessage),onreceiptofaST
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