SIST EN 301 144-4 V1.1.4:2005
(Main)Integrated Services Digital Network (ISDN); Digital Subscriber Signalling System No. one (DSS1) and Signalling System No.7 protocols; Signalling application for the mobility management service on the alpha interface; Part 4: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the user
General Information
- Abstract
Test specification for DE/SPS-05121-1
- Status
- Published
- Publication Date
- 31-Dec-2004
- 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
- Mandate
- BC-T-338
Overview
SIST EN 301 144-4 V1.1.4:2005 establishes standardized testing methodologies for user-side implementations of the Integrated Services Digital Network (ISDN) protocols, specifically focusing on Digital Subscriber Signalling System No. one (DSS1) and Signalling System No.7 (SS7) in the context of mobility management on the alpha interface. This standard, aligned with EN 301 144-4, defines the Abstract Test Suite (ATS) and the corresponding Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for users, ensuring interoperable and reliable protocol deployment within ISDN environments.
By providing a structured suite of protocol conformance tests and specifying necessary implementation information, the standard allows manufacturers, test laboratories, and network operators to verify that their systems conform to defined signalling protocol behaviors.
Key Topics
Abstract Test Suite (ATS):
Specification of protocol conformance tests applied to user-side implementations, allowing structured, repeatable, and comparable evaluation across products.Partial PIXIT Proforma:
Requirements for implementers and test engineers to supply key information about their specific protocol implementation (such as parameter values and configurations) necessary for effective and relevant testing.Naming Conventions and Encoding Rules:
Guidelines for naming test suite elements and test case components, including the use of ASN.1 data types and encoding variations (Basic Encoding Rules - BER).Test Case Documentation:
Provisions for test case mapping, verdict assignment, and comprehensive test reporting-including the Protocol Conformance Test Report (PCTR) and conformance status summaries.Conformance Requirements:
Specification of obligations for test laboratories, test realizers, and means of testing (MOT) to ensure consistency and reliability in test execution and reporting.
Applications
This standard plays a pivotal role in multiple practical scenarios within the telecommunications sector:
Product Certification:
Manufacturers of ISDN equipment can leverage the ATS and PIXIT proforma to demonstrate protocol compliance of their user equipment or network components, a key requirement for market acceptance and interoperability in multi-vendor environments.Quality Assurance & Interoperability Testing:
Organizations implementing ISDN-based solutions use this standard to validate that their user-side protocol implementations behave as specified, minimizing risk of integration errors and costly network disruptions.Testing Services:
Accredited test laboratories utilize the defined test suites and reporting frameworks to offer conformance testing services to equipment vendors and network operators, ensuring objective and standardized validation processes.Regulatory Compliance:
By adhering to SIST EN 301 144-4, stakeholders can demonstrate compliance with European and international requirements for digital network signalling, supporting network reliability and scalability.
Related Standards
SIST EN 301 144-4 is part of a series addressing ISDN protocol conformance and testing requirements. Related standards include:
- SIST EN 301 144-1: Protocol specification for DSS1 and SS7 over the alpha interface.
- SIST EN 301 144-3: Test Suite Structure and Test Purposes (TSS&TP) for user-side implementations.
- ISO/IEC 9646: Open Systems Interconnection – Conformance testing methodology and framework.
- ETSI EN 300 196-1: Generic functional protocol for supplementing DSS1.
- ISO/IEC 8825-1: ASN.1 encoding rules specification (BER, CER, DER).
For organizations involved in ISDN protocol development, equipment manufacturing, or network operation, adherence to this standard enhances network compatibility, security, and service quality, positioning their products and solutions for success in competitive telecommunications markets.
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Frequently Asked Questions
SIST EN 301 144-4 V1.1.4:2005 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Integrated Services Digital Network (ISDN); Digital Subscriber Signalling System No. one (DSS1) and Signalling System No.7 protocols; Signalling application for the mobility management service on the alpha interface; Part 4: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the user". This standard covers: Test specification for DE/SPS-05121-1
Test specification for DE/SPS-05121-1
SIST EN 301 144-4 V1.1.4:2005 is classified under the following ICS (International Classification for Standards) categories: 33.080 - Integrated Services Digital Network (ISDN). The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 301 144-4 V1.1.4:2005 is associated with the following European legislation: Standardization Mandates: BC-T-338. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
SIST EN 301 144-4 V1.1.4:2005 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.LJLWDOQHIntegrated Services Digital Network (ISDN); Digital Subscriber Signalling System No. one (DSS1) and Signalling System No.7 protocols; Signalling application for the mobility management service on the alpha interface; Part 4: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the user33.080Digitalno omrežje z integriranimi storitvami (ISDN)Integrated Services Digital Network (ISDN)ICS:Ta slovenski standard je istoveten z:EN 301 144-4 Version 1.1.4SIST EN 301 144-4 V1.1.4:2005en01-januar-2005SIST EN 301 144-4 V1.1.4:2005SLOVENSKI
STANDARD
ETSIEN301144-4V1.1.4(2000-05)EuropeanStandard(Telecommunicationsseries)IntegratedServicesDigitalNetwork(ISDN);DigitalSubscriberSignallingSystemNo.one(DSS1)andSignallingSystemNo.7protocols;Signallingapplicationforthemobilitymanagementserviceonthealphainterface;Part4:AbstractTestSuite(ATS)andpartialProtocolImplementationeXtraInformationforTesting(PIXIT)proformaspecificationfortheuserSIST EN 301 144-4 V1.1.4:2005
ETSIETSIEN301144-4V1.1.4(2000-05)2ReferenceDEN/SPS-05121-4KeywordsATS,CTM,DSS1,ISDN,PIXIT,SS7,userETSI650RoutedesLuciolesF-06921SophiaAntipolisCedex-FRANCETel.:+33492944200Fax:+33493654716SiretN°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:editor@etsi.frCopyrightNotificationNopartmaybereproducedexceptasauthorizedbywrittenpermission.Thecopyrightandtheforegoingrestrictionextendtoreproductioninallmedia.©EuropeanTelecommunicationsStandardsInstitute2000.Allrightsreserved.SIST EN 301 144-4 V1.1.4:2005
ETSIETSIEN301144-4V1.1.4(2000-05)3ContentsIntellectualPropertyRights.5Foreword.51Scope.62References.63Definitionsandabbreviations.73.1Definitions.73.2Abbreviations.74AbstractTestMethod(ATM).75Untestabletestpurposes.86ATSconventions.86.1VersionofTTCNused.86.2Namingconventions.86.2.1Declarationspart.86.2.1.1Testsuitetypeandstructuredtypedefinitions.86.2.1.2Testsuiteoperationsdefinitions.86.2.1.3Testsuiteparameterdeclarations.86.2.1.4Testcaseselectionexpressiondefinitions.96.2.1.5Testsuiteconstantdeclarations.96.2.1.6Testsuitevariabledeclarations.96.2.1.7Testcasevariabledeclarations.96.2.1.8PCOdeclarations.96.2.1.9Timerdeclarations.96.2.1.10ASPtypedefinitions.96.2.1.11PDUtypedefinitions.96.2.2Constraintspart.96.2.2.1Structuredtypeconstraint.96.2.2.2PDUconstraint.96.2.3Dynamicpart.106.2.3.1Teststepidentifier.106.3UseofASN.1.106.3.1SituationswhereASN.1isused.106.3.2Specificationofencodingrules.107ATStoTPmapping.118PCTRconformance.119PIXITconformance.1110ATSconformance.11AnnexA(normative):PartialPCTRproforma.12A.1Identificationsummary.12A.1.1Protocolconformancetestreport.12A.1.2IUTidentification.12A.1.3Testingenvironment.12A.1.4Limitsandreservations.13A.1.5Comments.13SIST EN 301 144-4 V1.1.4:2005
ETSIETSIEN301144-4V1.1.4(2000-05)4A.2IUTconformancestatus.13A.3Staticconformancesummary.13A.4Dynamicconformancesummary.13A.5Staticconformancereviewreport.14A.6Testcampaignreport.14A.7Observations.19AnnexB(normative):PartialPIXITproforma.20B.1Identificationsummary.20B.2Abstracttestsuitesummary.20B.3Testlaboratory.20B.4Client(ofthetestlaboratory).21B.5SystemUnderTest(SUT).21B.6Protocolinformation.22B.6.1Protocolidentification.22B.6.2IUTinformation.22B.6.2.1Parametervalues.22B.6.2.2ConfigurationofIUT.23B.6.2.3Timervalues.23B.7BasiccallPIXITitems.24B.7.1Parametervalues-informationelementcodings.24AnnexC(normative):AbstractTestSuite(ATS).26C.1TheTTCNGraphicalform(TTCN.GR).26C.2TheTTCNMachineProcessableform(TTCN.MP).26AnnexD(informative):GeneralstructureofATS.27History.28SIST EN 301 144-4 V1.1.4:2005
ETSIETSIEN301144-4V1.1.4(2000-05)5IntellectualPropertyRightsIPRsessentialorpotentiallyessentialtothepresentdocumentmayhavebeendeclaredtoETSI.TheinformationpertainingtotheseessentialIPRs,ifany,ispubliclyavailableforETSImembersandnon-members,andcanbefoundinSR000314:"IntellectualPropertyRights(IPRs);Essential,orpotentiallyEssential,IPRsnotifiedtoETSIinrespectofETSIstandards",whichisavailablefromtheETSISecretariat.LatestupdatesareavailableontheETSIWebserver(http://www.etsi.org/ipr).PursuanttotheETSIIPRPolicy,noinvestigation,includingIPRsearches,hasbeencarriedoutbyETSI.NoguaranteecanbegivenastotheexistenceofotherIPRsnotreferencedinSR000314(ortheupdatesontheETSIWebserver)whichare,ormaybe,ormaybecome,essentialtothepresentdocument.ForewordThisEuropeanStandard(Telecommunicationsseries)hasbeenproducedbyETSITechnicalCommitteeServicesandProtocolsforAdvancedNetworks(SPAN).Thepresentdocumentispart4ofamulti-partENcoveringtheIntegratedServicesDigitalNetwork(ISDN)DigitalSubscriberSignallingSystemNo.one(DSS1)andSignallingSystemNo.7(SS7)protocols;Signallingapplicationforthemobilitymanagementserviceonthealphainterfaceasidentifiedbelow:Part1:"Protocolspecification";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:5May2000DateoflatestannouncementofthisEN(doa):31August2000DateoflatestpublicationofnewNationalStandardorendorsementofthisEN(dop/e):28February2001DateofwithdrawalofanyconflictingNationalStandard(dow):28February2001SIST EN 301 144-4 V1.1.4:2005
ETSIETSIEN301144-4V1.1.4(2000-05)61ScopeThepresentdocumentspecifiestheAbstractTestSuite(ATS)andpartialProtocolImplementationeXtraInformationforTesting(PIXIT)proformafortheuseroftheSignallingapplicationforthemobilitymanagementserviceonthealphainterface.Itisapplicabletoalltypesofexchangesasdefinedinthereferencespecification.EN301144-3[7]specifiestheTestSuiteStructureandTestPurposes(TSS&TP)relatedtothisprotocol.OtherpartsspecifytheTSS&TPandtheATSandpartialPIXITproformafortheNetworksideforimplementationsconformingtoEN301144-1[1].2ReferencesThefollowingdocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthepresentdocument.• Referencesareeitherspecific(identifiedbydateofpublication,editionnumber,versionnumber,etc.)ornon-specific.• Foraspecificreference,subsequentrevisionsdonotapply.• Foranon-specificreference,thelatestversionapplies.• Anon-specificreferencetoanETSshallalsobetakentorefertolaterversionspublishedasanENwiththesamenumber.[1]ETSIEN301144-1(V1.1):"IntegratedServicesDigitalNetwork(ISDN);DigitalSubscriberSignallingSystemNo.one(DSS1)andSignallingSystemNo.7(SS7);Signallingapplicationforthemobilitymanagementserviceonthealphainterface;Part1:Protocolspecification".[2]ETSIEN300196-1(V1.2):"IntegratedServicesDigitalNetwork(ISDN);Genericfunctionalprotocolforthesupportofsupplementaryservices;DigitalSubscriberSignallingSystemNo.one(DSS1)protocol;Part1:Protocolspecification".[3]ISO/IEC9646:"Informationtechnology-OpenSystemsInterconnection-ConformanceTestingMethodologyandFramework"(allparts).[4]ETSITR101101(V1.1):"MethodsforTestingandSpecification(MTS);TTCNinterimversionincludingASN.11994support[ISO/IEC9646-3](SecondEditionMock-upforJTC1/SC21Review)".[5]ISO/IEC9646-2:"Informationtechnology-OpenSystemsInterconnection-Conformancetestingmethodologyandframework-Part2:Abstracttestsuitespecification".[6]ETSIETS300175-5:"DigitalEnhancedCordlessTelecommunications(DECT);CommonInterface(CI);Part5:Network(NWK)layer".[7]ETSIEN301144-3:"IntegratedServicesDigitalNetwork(ISDN);DigitalSubscriberSignallingSystemNo.one(DSS1)andSignallingSystemNo.7protocols;Signallingapplicationforthemobilitymanagementserviceonthealphainterface;Part3:TestSuiteStructureandTestPurposes(TSS&TP)specificationfortheuser".[8]ISO/IEC9646-3/AM2:"Informationtechnology-OpenSystemsInterconnection-Conformancetestingmethodologyandframework-Part3:TheTreeandTabularCombinedNotation(TTCN)".[9]ISO/IEC8825-1:"Informationtechnology-EncodingRulesforAbstractSyntaxNotationOne(ASN.1)-Part1:SpecificationofBasicEncodingRules(BER),CanonicalEncodingRules(CER)andDistinguishedEncodingRules(DER)"(SeealsoITU-TRecommendationX.690:1994.)".[10]ISO/IEC9646-5:"Informationtechnology-OpenSystemsInterconnection-Conformancetestingmethodologyandframework-Part5:Requirementsontestlaboratoriesandclientsfortheconformanceassessmentprocess".SIST EN 301 144-4 V1.1.4:2005
ETSIETSIEN301144-4V1.1.4(2000-05)7[11]ISO/IEC9646-4:"Informationtechnology-OpenSystemsInterconnection-Conformancetestingmethodologyandframework-Part4:Testrealization".3Definitionsandabbreviations3.1DefinitionsForthepurposesofthepresentdocument,thetermsanddefinitionsgiveninISO/IEC9646[3]apply.3.2AbbreviationsForthepurposesofthepresentdocument,thefollowingabbreviationsapply:ASPAbstractServicePrimitiveATMAbstractTestMethodATSAbstractTestSuiteBERBasicEncodingRulesIUTImplementationUnderTestLTLowerTesterMOTMeansOfTestingPCOPointofControlandObservationPDUProtocolDataUnitPICSProtocolImplementationConformanceStatementPIXITProtocolImplementationeXtraInformationforTestingSUTSystemUnderTestTPTestPurposeTTCNTreeandTabularCombinedNotationUTUpperTester4AbstractTestMethod(ATM)TheremotetestmethodisappliedforthisuserAbstractTestSuite(ATS).APointofControlandObservation(PCO)residesattheserviceaccesspointbetweenlayers2and3inthetestsystem.ThisPCOisnamed"L"(forLower).TheLPCOisusedtocontrolandobservethebehaviouroftheImplementationUnderTest(IUT)andtestcaseverdictsareassigneddependingonthebehaviourobservedatthisPCO.SIST EN 301 144-4 V1.1.4:2005
ETSIETSIEN301144-4V1.1.4(2000-05)8Asecond"informal"PCO,called"O"(forOperator)isusedtospecifycontrolbutnotobservationabovetheIUT;eventsatthisPCOareneverusedtogeneratetestcaseverdicts.MessagessentbythetesteratthisPCOexplicitlyindicatetotheoperatoractionswhicharetobeperformedontheSystemUnderTest(SUT).Thisisregardedasapreferredalternativetotheuseoftheimplicitsendevent.TesterInformaltestco-ordinationbyoperatorSUTUpperlayer(s)PCOOLTIUTPCOLLayer2Layer2Layer1Layer1ServiceproviderFigure1:RemotetestmethodwithPCOOfortestco-ordination5UntestabletestpurposesTherearenountestabletestpurposesassociatedwiththisATS.6ATSconventions6.1VersionofTTCNusedTheversionofTTCNusedisthatdefinedinTR101101[4].6.2Namingconventions6.2.1DeclarationspartSubclause6.2.1describesthenamingconventionschosenfortheelementsoftheATSdeclarationspart.6.2.1.1TestsuitetypeandstructuredtypedefinitionsThetestsuitetypeandtestsuitestructuredtypeidentifiersarewritteninlowercasestartingbyanuppercaseletterorcompletelyinuppercaseletters.6.2.1.2TestsuiteoperationsdefinitionsThetestsuiteoperationidentifiersarecomposedofstringsinuppercaseandlowercaselettersstartingbythestring"TSO_".EXAMPLE:TSO_CalcFieLength6.2.1.3TestsuiteparameterdeclarationsThetestsuiteparameteridentifiersarecomposedofstringsinuppercaseandlowercaselettersstartingbytheuppercasestring"PC_"foraPICSor"PX_"foraPIXIT.SIST EN 301 144-4 V1.1.4:2005
ETSIETSIEN301144-4V1.1.4(2000-05)96.2.1.4TestcaseselectionexpressiondefinitionsThenamingconventionsforthetestcaseselectionexpressiondefinitionsusefreetextstartingwiththestring:"TCSE_".Thenameoftheexpressionshallexplainclearlytheselectionrule.Thetestcaseselectionexpressionsaregenerallylogicalcombinationsofthetestsuiteparameterdefinitions.6.2.1.5TestsuiteconstantdeclarationsThetestsuiteconstantidentifiersarecomposedofstringsinuppercaseandlowerlettersstartingbytheuppercasestring"TSC_".6.2.1.6TestsuitevariabledeclarationsThetestsuitevariableidentifiersarecomposedofstringinlowercaselettersstartingbythelowercasestring"tsv_".6.2.1.7TestcasevariabledeclarationsThetestcasevariableidentifiersarecomposedofstringsinlowercaselettersstartingbythelowercasestring"tcv_".6.2.1.8PCOdeclarationsThepointofcontrolandobservationidentifiersarecomposedofthreetosixcapitalletters,beginningwithan"L",asthereareonlyLTs.6.2.1.9TimerdeclarationsThetimernamesbeginwiththeprefix"T_",followedbyastringinlowercaseoruppercaseletterswitheachwordinthefollowingstringstartingwithanuppercaseletter.6.2.1.10ASPtypedefinitionsTheASPtypesweredefinedinuppercaseletters.6.2.1.11PDUtypedefinitionsThetypeofaProtocolDataUnit(PDU)isgiveninuppercaseletters.6.2.2ConstraintspartSubclause6.2.2describesthenamingconventionschosenfortheelementsoftheATSconstraintspart.6.2.2.1StructuredtypeconstraintStructuredTypeconstraintidentifierbeginwithanuppercaseletterfollowedbyuppercaseandlowercaseletters.Themeaningoftheidentifierrepresentthecontentsofthestructuredtypeconstraint.6.2.2.2PDUconstraintConstraintidentifierbeginwiththetypeofthePDUwritteninuppercase.Theremainingpartofthenameisseparatedfromthebeginningwithanunderscoreandiswritteninlowercasewitheachwordstartingwithanuppercaseletter.Theprefix_Sor_Rshallbeaddedattheendoftheidentifiertoindicateiftheconstraintissentorreceivedbythetester.SIST EN 301 144-4 V1.1.4:2005
ETSIETSIEN301144-4V1.1.4(2000-05)106.2.3DynamicpartSubclause6.2.3describesthenamingconventionschosenfortheelementsoftheATSdynamicpart.6.2.3.1TeststepidentifierTheteststepidentifierisbuiltwithastringoflowercaselettersleadedbyastringofcapitalletterandjoinedbyanunderscorecharacter.Thefirststringindicatesthemainfunctionoftheteststep;e.g.PREforpreamble,PSTforpostambleandSTPforanormalstep.Thesecondstringindicatesthemeaningofthestep.EXAMPLES:PRE_Name;PST_Name;STP_Name.6.3UseofASN.16.3.1SituationswhereASN.1isusedASN.1hasbeenusedforthreemajorreasons.First,typesdefinedinASN.1canmodelproblemsthat"pure"TTCNcannot.Forinstance,datastructuresmodellingorderedorunorderedsequencesofdataarepreferablydefinedinASN.1.Second,ASN.1providesabetterrestrictionmechanismfortypedefinitionsbyusingsub-typedefinitions.Third,itisnecessarytouseASN.1toreproducethetypedefinitionsforremoteoperationcomponentsspecifiedinthebasestandardsinASN.1.ThepossibilitytouseTTCNandASN.1incombinationisused,i.e.referringtoanASN.1typefromaTTCNtype.6.3.2SpecificationofencodingrulesThereisavariationintheencodingrulesappliedtoASN.1typesandconstraintsspecifiedinthisATSandthereforeamechanismisneededtodifferentiatetheencodingrules.HoweverthemechanismspecifiedinISO/IEC9646-3[8]/AM2andinTR101101[4]doesnotfacilitatedefinitionoftheencodingrulesasneededforthisATS.AsolutionisthereforeusedwhichisbroadlyinthespiritofISO/IEC9646-3[8]/AM2inwhichcommentfieldshavebeenusedasameansofencodingrules.ForASN.1usedinthisATS,twovariationsofencodingrulesareused.OneisthecommonlyknownBasicEncodingRules(BER)asspecifiedinISO/IEC8825-1[9],thesecondoneistheencodingthatcorrespondtothespecification,i.e.theASN.1datatypesarearepresentationofstructurescontainedwithinthespecification.Forexample,ifoctetsofaninformationelementarespecifiedinASN.1asaSEQUENCEthenthisshouldbeencodedinanExecutableTestSuite(ETS)asanyotherinformationelementspecifiedusingtabularTTCN.ThisencodingvariationisthedefaultencodingruleforthisATS.ThismeansthatallASN.1constrainttablesareencodedusingthissecond(non-BER)encodingunlessstatedotherwise.BERencodingshallnotbeappliedtoanASN.1constraintwhereBERencodinghasnotbeenspecified.Thisencodingruleissometimesnamed"DirectEncoding".ForBERencoding,anindicationisgiveninthecommentsfieldofthetableheaderandintheencodingvariationfield.NotethatwithinBER,thereareanumberofvariationsfortheencodingoflengthsoffields.AccordingtoEN300196-1[2],anIUTshouldbeabletointerpretalllengthformswithinBERforreceivedPDUs.WhensendingPDUscontainingBERencoding,EN300196-1[2]givesguidelinesbutmakesnorestrictionsonthelengthformswithinBERwhichanIUTmayapply.InthisparticularATSallASN.1typeconstraintswhichareoftype"Component"aretobeencodedusingBER.SIST EN 301 144-4 V1.1.4:2005
ETSIETSIEN301144-4V1.1.4(2000-05)117ATStoTPmappingTheidentifiersusedfortheTPs(seeEN301144-3[7])arereusedastestcasenames.Thusthereisastraightforwardone-to-onemapping.8PCTRconformanceAtestlaboratory,whenrequestedbyaclienttoproduceaPCTR,isrequired,asspecifiedinISO/IEC9646-5[10],toproduceaPCTRconformancewiththePCTRtemplategiveninannexBofISO/IEC9646-5[10].Furthermore,atestlaboratory,offeringtestingforeitherATSspecificationcontainedinannexC,whenrequestedbyaclienttoproduceaPCTR,isrequiredtoproduceaPCTRconformancewiththePCTRproformacontainedinannexA.APCTRwhichconformstothisPCTRproformaspecificationshallpreservethecontentandorderingoftheclausescontainedinannexA.ClauseA.6ofthePCTRmaycontainadditionalcolumns.Ifincluded,theseshallbeplacedtotherightoftheexistingcolumns.Textinitalicsmayberetainedbythetestlaboratory.9PIXITconformanceAtestrealizer,producinganexecutabletestsuiteforATSspecificationcontainedinannexC,isrequired,asspecifiedinISO/IEC9646-4[11],toproduceanaugmentedpartialPIXITproformaconformantwiththispartialPIXITproformaspecification.AnaugmentedpartialPIXITproformawhichconformstothispartialPIXITproformaspecificationshall,asaminimum,havecontentswhicharetechnicallyequivalenttoannexB.TheaugmentedpartialPIXITproformamaycontainadditionalquestionsthatneedtobeansweredinordertopreparetheMeansOfTesting(MOT)foraparticularIUT.Atestlaboratory,offeringtestingforeitherATSspecificationcontainedinannexC,isrequired,asspecifiedinISO/IEC9646-5[10],tofurtheraugmenttheaugmentedpartialPIXITproformatoproduceaPIXITproformaconformantwiththispartialPIXITproformaspecification.APIXITproformawhichconformstothispartialPIXITproformaspecificationshall,asaminimum,havecontentswhicharetechnicallyequivalenttoannexB.ThePIXITproformamaycontainadditionalquestionsthatneedtobeansweredinordertopreparethetestlaboratoryforaparticularIUT.10ATSconformanceThetestrealizer,producingMOTandexecutabletestsuiteforthisATSspecification,shallcomplywiththerequirementsofISO/IEC9646-4[11].Inparticular,theseconcerntherealizationofanexecutabletestsuitebasedtothisATSspecification.ThetestrealizershallprovideastatementofconformanceoftheMOTtothisATSspecification.AnexecutabletestsuitewhichconformstothisATSspecificationshallcontaintestgroupsandtestcaseswhicharetechnicallyequivalenttothosecontainedinattheATSinannexC.Allsequencesoftesteventscomprisinganabstracttestcaseshallbecapableofbeingrealizedintheexecutabletestcase.AnyfurthercheckingwhichthetestsystemmightbecapableofperformingisoutsidethescopeofthisATSspecificationandshallnotcontributetotheverdictassignmentforeachtestcase.Tes
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