SIST EN 300 324-6 V3.1.1:2005
(Main)V interfaces at the digital Local Exchange (LE); V5.1 interface for the support of Access Network (AN); Part 6: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the network layer (LE side)
General Information
- Abstract
Update the test specifications to be in line with the 3rd edition of the base protocol standard.
- 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
Overview
SIST EN 300 324-6 V3.1.1:2005 specifies the Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma for the network layer of the V5.1 interface at digital Local Exchanges (LEs), focusing on the LE side. This standard aligns test specifications with the 3rd edition of the V5.1 protocol, ensuring consistent and interoperable implementations in telecommunication networks. The document targets implementers and testers aiming to verify conformance and interoperability between Access Networks (AN) and Local Exchanges from different vendors using the V5.1 interface.
Key Topics
- Abstract Test Suite (ATS): Provides a comprehensive set of conformance test cases for the V5.1 network layer (on the LE side) using the Tree and Tabular Combined Notation (TTCN), in accordance with established ISO/IEC methodologies.
- Abstract Test Method (ATM): Specifies the test environment, including the use of remote test methods and detailed Point of Control and Observation (PCO) structures, to evaluate the behaviour of the system under test (SUT).
- Partial PIXIT Proforma: Offers standardized templates to capture specific implementation details and extra test information required for rigorous protocol testing.
- Naming and Implementation Conventions: Establishes consistent naming structures for test case identifiers, parameters, and constraints, improving maintainability, clarity, and traceability in test documentation and execution.
- Test Coverage and Structure: Details the sequence for executing test cases, handling of errors, and exclusion of certain untestable test purposes due to practical restrictions.
- References to International Standards: Integrates ISO/IEC 9646 series for conformance testing frameworks and methodologies.
Applications
The standard plays a critical role in the telecommunications sector by providing:
- Interoperability assurance: Verifies that Access Networks (AN) and Local Exchanges (LE) comply with V5.1 interface requirements, even if sourced from different manufacturers.
- Quality assurance in deployments: Offers a robust framework for verifying implementations before live network deployment, minimizing costly interworking issues.
- Streamlined integration and upgrades: Facilitates consistent updates and integration in multi-vendor environments by harmonizing testing methodologies.
- Support for test laboratories: Supplies laboratories with standardized test cases (ATS) and proformas (PIXIT), ensuring repeatable and auditable testing processes.
- Vendor-neutral verification: Empowers network operators and regulators to objectively evaluate V5.1 protocol implementations on the LE side.
- Compliance with international best practices: Adopts industry-leading frameworks for both test specification and execution, promoting global compatibility.
Related Standards
For complete and comprehensive V5.1 interface testing and implementation, the following related standards are particularly relevant:
- EN 300 324-1: V5.1 interface specification - defines the fundamental protocol.
- EN 300 324-2: Protocol Implementation Conformance Statement (PICS) proforma - documents compliance statements.
- EN 300 324-5: Test Suite Structure and Test Purposes (TSS&TP) for the network layer (LE side).
- EN 300 324-3/4: Comparable test specifications and suites for the AN side of the interface.
- EN 300 324-7/8/9: Specifications for the data link and physical layers.
- ISO/IEC 9646 Series: Frameworks and methodologies for conformance testing, including the use of Tree and Tabular Combined Notation (TTCN).
- ETSI ETS 300 406: General testing methodologies in telecommunications.
Keywords: V5.1 interface, Abstract Test Suite, PIXIT, digital Local Exchange (LE), Access Network (AN), TTCN, protocol conformance, interoperability, telecommunications testing.
Implementers, testers, and network operators can rely on SIST EN 300 324-6 to drive efficient, reliable, and standardized V5.1 network layer protocol evaluations for digital local exchanges across Europe and internationally.
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Frequently Asked Questions
SIST EN 300 324-6 V3.1.1:2005 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "V interfaces at the digital Local Exchange (LE); V5.1 interface for the support of Access Network (AN); Part 6: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the network layer (LE side)". This standard covers: Update the test specifications to be in line with the 3rd edition of the base protocol standard.
Update the test specifications to be in line with the 3rd edition of the base protocol standard.
SIST EN 300 324-6 V3.1.1:2005 is classified under the following ICS (International Classification for Standards) categories: 33.040.30 - Switching and signalling systems. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 300 324-6 V3.1.1:2005 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.Vmesniki V pri digitalnih krajevnih centralah (LE) – Vmesnik V5.1 za podporo dostopovnemu omrežju (AN) – 6. del: Abstraktni preskušalni niz (ATS) in delna dodatna informacija za preskušanje izvedbe protokola (PIXIT) – Proforma specifikacija 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 6: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the network layer (LE side)33.040.30Komutacijski in signalizacijski sistemSwitching and signalling systemsICS:Ta slovenski standard je istoveten z:EN 300 324-6 Version 3.1.1SIST EN 300 324-6 V3.1.1:2005en01-januar-2005SIST EN 300 324-6 V3.1.1:2005SLOVENSKI
STANDARD
ETSIEN300324-6V3.1.1(2001-03)EuropeanStandard(Telecommunicationsseries)VinterfacesatthedigitalLocalExchange(LE);V5.1interfaceforthesupportofAccessNetwork(AN);Part6:AbstractTestSuite(ATS)andpartialProtocolImplementationeXtraInformationforTesting(PIXIT)proformaspecificationforthenetworklayer(LEside)SIST EN 300 324-6 V3.1.1:2005
ETSIETSIEN300324-6V3.1.1(2001-03)2ReferenceREN/SPAN-09101-6KeywordsANV,ATS,LE,PIXIT,testing,Vinterface,V5interfaceETSI650RoutedesLuciolesF-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.©EuropeanTelecommunicationsStandardsInstitute2001.Allrightsreserved.SIST EN 300 324-6 V3.1.1:2005
ETSIETSIEN300324-6V3.1.1(2001-03)3ContentsIntellectualPropertyRights.4Foreword.41Scope.52References.53Definitionsandabbreviations.63.1Definitions.63.2Abbreviations.74Abstracttestmethod.84.1ATM.84.2NWKprotocoltesting.84.3Datalinkaddresses.94.4ExecutionofTCs.94.4.1Handlingoferrorindication.94.4.2TCexecutionsequence.95Untestabletestpurposes.105.1Controlprotocol.105.2PSTNprotocol.106Abstracttestsuiteconventions.116.1Namingconventions.116.1.1Declarationpart.116.1.2Constraintpart.126.1.3Dynamicpart.126.1.3.1Testcases.126.1.3.2Teststeps.126.1.3.3Generalaspects.126.1.4ATSabbreviations.136.2Implementationconventions.136.2.1Declarationpart.136.2.2Constraintpart.146.2.3Dynamicpart.146.2.4Documentation.15AnnexA(normative):AbstracttestsuiteforNWKtesting.16A1TheTTCNGraphicalform(TTCN.GR).16A2TheTTCNMachineProcessableform(TTCN.MP).16AnnexB(normative):PartialPIXITproforma.17B.1Introduction.17B.2PIXITproforma.17B.2.1Identificationsummary.17B.2.2Abstracttestsuitesummary.17B.2.3Testlaboratory.17B.2.4Client.18B.2.5SUT.18B.2.6Protocollayerinformation.19B.2.6.1Protocolidentification.19B.2.6.2IUTinformation.19History.23SIST EN 300 324-6 V3.1.1:2005
ETSIETSIEN300324-6V3.1.1(2001-03)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).Thepresentdocumentispart6ofamulti-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 300 324-6 V3.1.1:2005
ETSIETSIEN300324-6V3.1.1(2001-03)51ScopeThissixthpartofEN300324containstheAbstractTestSuite(ATS)aswellastheAbstractTestMethod(ATM)andthepartialProtocolImplementationeXtraInformationforTesting(PIXIT)proformafortheNetworklayer(NWK)ofaV5.1interfaceandpartsofthesystemmanagementoftheLocalExchange(LE)sideofaV5.1interface.TheobjectiveofthepresentdocumentistoprovideanATScontainingconformancetestswhichgiveahighprobabilityofinter-operabilityofanAccessNetwork(AN)andaLEfromdifferentmanufacturersovertheV5.1interface.ISO/IEC9646-1[5]andISO/IEC9646-2[6]areusedasthebasisforthetestmethodology.TheATSisdefinedusingtheTreeandTabularCombinedNotation(TTCN)accordingtoISO/IEC9646-3[7].TheATSinannexAdescribesasetofTestCases(TCs)whicharebasedontheTestPurposes(TPs)specifiedinEN300324-5[3].TheTCsprovidetheimplementationoftheTPsandcanbeconvertedintoanexecutabletestsuitebyusingavailableTTCNtranslatorsandthecorrespondingtools.AnnexBprovidesthepartialPIXITproforma.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)proformaspecification".[3]ETSIEN300324-5:"VinterfacesatthedigitalLocalExchange(LE);V5.1interfaceforthesupportofAccessNetwork(AN);Part5:TestSuiteStructureandTestPurposes(TSS&TP)specificationforthenetworklayer(LEside)".[4]ISO7498:"InformationProcessingSystems-OpenSystemsInterconnection-BasicReferenceModel".[5]ISO/IEC9646-1:"InformationTechnology-OpenSystemsInterconnection-Conformancetestingmethodologyandframework-Part1:Generalconcepts".[6]ISO/IEC9646-2:"InformationTechnology-OpenSystemsInterconnection-Conformancetestingmethodologyandframework-Part2:Abstracttestsuitespecification".[7]ISO/IEC9646-3:"InformationTechnology-OpenSystemsInterconnection-Conformancetestingmethodologyandframework-Part3:TheTreeandTabularCombinedNotation(TTCN)".[8]ISO/IEC9646-5:"InformationTechnology-OpenSystemsInterconnection-Conformancetestingmethodologyandframework-Part5:Requirementsontestlaboratoriesandclientsfortheconformanceassessmentprocess".SIST EN 300 324-6 V3.1.1:2005
ETSIETSIEN300324-6V3.1.1(2001-03)6[9]ETSIETS300406(1995):"MethodsforTestingandSpecification(MTS);Protocolandprofileconformancetestingspecifications;Standardizationmethodology".[10]ETSIETR141(1994):"MethodsforTestingandSpecification(MTS);Protocolandprofileconformancetestingspecifications;TheTreeandTabularCombinedNotation(TTCN)styleguide".3Definitionsandabbreviations3.1DefinitionsForthepurposesofthepresentdocument,thefollowingtermsanddefinitionsapply,togetherwiththosegiveninEN300324-1[1]:abstracttestcase:refertoISO/IEC9646-1[5]NOTE:Inthepresentdocument,thecommonlyusedtermTCisappliedinthesamewayasATC.abstracttestsuite:refertoISO/IEC9646-1[5]currentprovisioningvariant:IDforthepresentlyactivedatasetdatalinklayer:refertoISO7498[4]embeddedvariant:refertoISO/IEC9646-2[6]implementationundertest:refertoISO/IEC9646-1[5]incorrectinformationelement:specifiedinformationelementcarryinginformationelementtypesnotdefinedinEN300324-1[1]invalidPSTNinformationelement:PSTNinformationelementnotaccordingtonationalspecificrequirementsinvalidprotocoldataunit:protocolDataUnit(PDU)whichcontainsanincorrectmessageformatinvalidPSTNmessage:PSTNmessagecarryinginformationelementsnotaccordingtonationalspecificrequirementslowertester:refertoISO/IEC9646-1[5]networklayer:refertoISO7498[4]newprovisioningvariant:IDforthedatasetwhichwasannouncedtotheIUTtobecomethenextactivedatasetthroughre-provisioningphysicallayer:refertoISO7498[4]PICSproforma:refertoISO/IEC9646-1[5]PIXITproforma:refertoISO/IEC9646-1[5]PointOfControlAndObservation(PCO):refertoISO/IEC9646-1[5]ProtocolImplementationConformanceStatement(PICS):refertoISO/IEC9646-1[5]ProtocolImplementationeXtraInformationForTesting(PIXIT):refertoISO/IEC9646-1[5]remotetestmethod:refertoISO/IEC9646-2[6]specifiedinformationelement:informationelementIDdefinedinEN300324-1[1]systemundertest:refertoISO/IEC9646-1[5]SIST EN 300 324-6 V3.1.1:2005
ETSIETSIEN300324-6V3.1.1(2001-03)7testpurpose:refertoISO/IEC9646-1[5]unknownprovisioningvariant:IDforanon-availabledatasetunspecifiedinformationelement:informationelementIDnotdefinedinEN300324-1[1]validinformationelement:PSTNinformationelementaccordingtonationalspecificrequirementsvalidPSTNmessage:PSTNmessagecarryinginformationelementsaccordingtonationalspecificrequirements3.2AbbreviationsForthepurposesofthepresentdocument,thefollowingabbreviationsapply:ANAccessNetworkASPAbstractServicePrimitiveATCAbstractTestCaseATMAbstractTestMethodATSAbstractTestSuiteBIInvalidBehaviourBOInopportuneBehaviourBVValidBehaviourCACApabilitytestCTRLControlDLLDataLinkLayerDSAPDatalinkServiceAccessPointFEFunctionElementIDIdentifierIEInformationElementISDNIntegratedServicesDigitalNetworkISDN-BAISDN-BasicAccessITbasicInterconnectionTestIUTImplementationUnderTestL3addrLayer3addressLELocalExchangeLT1LowerTester1MPHManagementPhysicallayerNWKNetworkLayerPCOPointofControlandObservationPDUProtocolDataUnitPHLPhysicalLayerPICSProtocolImplementationConformanceStatementPIXITProtocolImplementationeXtraInformationforTestingPSTNPublicSwitchedTelephoneNetworkSAPServiceAccessPointSUTSystemUnderTestTCTestCase(abstractTC)TITimerExpiryandCounterMismatchTPTestPurposeTSSTestSuiteStructureTTCNTreeandTabularCombinedNotationULUpperLayerUTUpperTesterV5DLaddrV5DataLinkaddressSIST EN 300 324-6 V3.1.1:2005
ETSIETSIEN300324-6V3.1.1(2001-03)84AbstracttestmethodThisclausedescribestheAbstractTestMethod(ATM)andthePointofControlandObservation(PCO)usedtotesttheNWKoftheV5.1protocolfortheLEcomponents.4.1ATMPrincipally,theremotetestmethodisusedforV5.1LENWKconformancetesting.CertainV5.1LENWKTPsneedalsopartoftheserviceandnationalfunctions.Therefore,theembeddedvariantoftheremotetestmethodisapplied.ThenationaldependentinformationisdefinedinthePIXIT.4.2NWKprotocoltestingTheV5.1implementationsdonotofferadirectaccesstotheupperserviceboundary.Theremotetestmethodwaschosenbecauseanyco-ordinationprocedurescanonlybeexpressedinaninformalway.SUTV5NWKPDUsServiceProviderDLL&PHLlayersLT1PCO/DSAPDLconnectionendpointsV5TestSystemIUTV5NWKDL-DATAUTControlandPSTNprotocolFigure1:RemotetestmethodappliedtotheV5.1NWKtestingLT1:ALowerTester(LT1)islocatedinaremoteV5.1testsystem.ItcontrolsandobservesthebehavioursoftheIUT.DSAP:AuniqueDatalinkServiceAccessPoint(DSAP)isdefinedattheV5.1interfaceandcommonlyusedforexchangingservicedataofthedifferentnetworklayerprotocolfunctionalentities:PSTN,Controlprotocols.PCO:ThePCOforNWKtestingislocatedontheDSAP.AlltesteventsatthePCOarespecifiedintermsofdatalinkAbstractServicePrimitives(ASPs)andnetworklayerPDUs.UT:NoexplicitUpperTester(UT)existsinthetestsystem.However,theSUTneedstocarryoutsomeULfunctionstoachievesomeeffectsoftestco-ordinationprocedures.DesigningATS,thecapabilityofthesystemmanagementfunctions,suchascontrolsoftheIUT,itsinteractionswiththeQinterfacemaybetakenintoaccount.ThecontrolsoftheIUTwillbeimpliedorinformallyexpressedintheATS,butnoassumptionshallbemaderegardingtheirfeasibilityorrealization.ExamplesofsuchcontrolscouldbetoprovokerestartingIUTorblocking/unblockingproceduresthroughQinterface.SIST EN 300 324-6 V3.1.1:2005
ETSIETSIEN300324-6V3.1.1(2001-03)94.3DatalinkaddressesWithintheDSAP,differentV5DLaddrareusedtoidentifyeachcorrespondingdatalinkconnection.Eachnetworklayerprotocolfunctionalentitycanhaveonlyonedatalinkconnection,e.g.allPSTNsignallinginformationshareonedatalinkconnection.Table1showstheallocatedV5DLaddrusedbytheprotocolfunctionentities.Table1:V5DLaddrProtocolPSTNControlV5DLaddr817681774.4ExecutionofTCs4.4.1HandlingoferrorindicationDuringtheexecutionoftheNWKATSmanyerrorindicationswillbesenttothesystemmanagementduetotheinvalidandtheinopportuneTCs.ItisuptotheIUTsuppliertotakethenecessaryprecautionstoavoidanyimpactonthetestresult.4.4.2TCexecutionsequenceThefollowingtestsequenceshallbeapplied:TheTCcontainingthestart-upprocedure(TC11__SM_01)shallalwaysbethefirstTCexecuted.AlsoinanycasewheretheIUThastoberestartedthisTCshallbefirstexecuted.Protocolgroups:CTRLPSTN.Testgroups:ITCATIBVBOBI.Interactionsbetweenthedifferenttestgroupsarenotconsidered.ItisuptotheIUTsuppliertotakethenecessaryprecautionstoavoidanyimpactonthetestresult.NOTE:ThisappliesinparticulartoPORTCONTROLmessagesfromISDNportswhiletestingPSTN-relatedprotocolsandviceversa.SIST EN 300 324-6 V3.1.1:2005
ETSIETSIEN300324-6V3.1.1(2001-03)105UntestabletestpurposesThisclausecontainsalistofTPswhicharenotcoveredbytheATSduetothechosenATMorotherrestrictions.5.1ControlprotocolTable2listsTPswhicharenotcoveredbytheATSduetotheunknownreactionoftheIUTaftertestingtheTPs.Table2:UntestableTPs(4)TestPurposeIDTP1311S1_01TP1313S0_01TP1313SM_06TP1313SM_07TP1313SM_08TP1313SM_09TP1321S1_01TP1324S1001TP1324SM_05TP1324SM_11TP1325S1001TP1325S2013TP1325SM_11TP1325SM_245.2PSTNprotocolThetestpurposeslistedintable3arenotimplementedintheATSduetounknownreactionoftheIUTaftertestingtheTPs.Table3:UntestableTPs(6)TestPurposeIDTP23__S1_04TP23__S1_06TP23__S2_08TP23__S2_09TP23__S4_07TP23__S5_10TP23__S6_01TP26__S4_01SIST EN 300 324-6 V3.1.1:2005
ETSIETSIEN300324-6V3.1.1(2001-03)116AbstracttestsuiteconventionsTheATSconventionsareintendedtogiveabetterunderstandingoftheATSbuttheydescribealsotheconventionsmadeforthedevelopmentoftheATS,thusforanylatermaintenancepurposesorfurtherdevelopmentoftheATStheconventionsdescribedinthisclauseshallbeconsidered.TheATSconventionscontaintwoclauses,thenamingconventionsandtheimplementationconventions.ThenamingconventionsdescribethestructureofthenamingofallATSelements.TheimplementationconventionsdescribethefunctionalstructureoftheATS.NOTE:TodefinetheATS,theguidelinesgiveninETS300406[9]andETR141[10]wereconsidered.6.1Namingconventions6.1.1DeclarationpartTheIDnamesofthefollowingdefinitionsarewritteninlowercase:-structuredtypedefinitions;-SPtypedefinitions;-PDUtypedefinitions.TheIDnamesofthefollowingdefinitionsarewritteninuppercase:-TestSuiteParameterDeclarations;-TestCaseSelectionExpressionDefinitions;-TestSuiteConstantDeclarations;-TestCaseVariableDeclarations.IDnamesofPDUsandstructuredtypescommencewithaprotocolidentifiertodefinewhichprotocoltheyarebelongingto.Thefollowingidentifiersareused:-controlprotocol:ctrle.g.crtl_common_contro
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