SIST EN 301 070-4 V1.1.2:2004

• Abstract:

  ATS and PIXIT for part 1

• 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
• Mandate: BC-T-338
• Ref Project: ETSI EN 301 070-4 V1.1.2 (2000-11) - Integrated Services Digital Network (ISDN); Signalling System No.7 (SS7); ISDN User Part (ISUP) version 3 interactions with the Intelligent Network Application Part (INAP); Part 4: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification

SIST EN 301 070-4 V1.1.2:2004 is the Slovenian adoption of ETSI EN 301 070-4 V1.1.2 for Integrated Services Digital Network (ISDN) signalling between ISDN User Part (ISUP) version 3 and Intelligent Network Application Part (INAP) CS1. It specifies the Abstract Test Suite (ATS) and the partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma used to validate conformance of exchanges that implement ISUP v3 in the call control function (CCF) and INAP CS1 in the service switching function (SSF).

What does SIST EN 301 070-4 V1.1.2:2004 specify?

SIST EN 301 070-4 V1.1.2:2004 specifies the conformance test specification for the interaction between ISUP v3 and INAP CS1 defined in EN 301 070-1. It is intended for validation testing of exchanges that implement the referenced protocol functions, and it explicitly excludes compatibility testing.

The document is organized into:

• Clause 1 - Scope
• Clause 2 - References
• Clause 3 - Definitions and abbreviations
• Clause 4 - Abstract Test Method (ATM)
• Clause 5 - Untestable test purposes
• Clause 6 - ATS to TP map
• Clause 7 - PCTR conformance
• Clause 8 - PIXIT conformance
• Clause 9 - ATS conformance
• Annex A - PCTR proforma
• Annex B - PIXIT proforma
• Annex C - ATS

Annex	What it covers
A	Protocol Conformance Test Report (PCTR) proforma for ISUP v3 and INAP CS1
B	Partial PIXIT proforma for ISUP v3 and INAP CS1
C	ATS for ISUP v3 - INAP CS1

What are the key requirements of SIST EN 301 070-4 V1.1.2:2004?

SIST EN 301 070-4 V1.1.2:2004 focuses on how to test, what information must be supplied before testing, and how conformance claims are recorded. In practice, it gives the test structure, the test data questionnaire, and the reporting forms that support a conformance campaign.

Abstract test method and control points

Clause 4 says the ATS uses a remote test method. The Point of Control and Observation (PCO) is at the service access point between layers 2 and 3 and is called L0, which means verdicts are based on what the tester can control and observe there.

Clause 4 also introduces an additional informal PCO called O for test coordination. O is used to describe operator actions, but not to decide verdicts, so it helps the tester understand the required setup without affecting pass or fail decisions.

Test purpose mapping and test coverage

Clause 5 states that there are no untestable test purposes associated with the ATS. Clause 6 reuses the test purpose identifiers from EN 301 067-3 as test case names, with a one-to-one mapping. This makes the ATS easier to trace and helps a test lab match reports to the named cases.

Reporting and configuration information

Clause 7 requires a PCTR that conforms to the ISO/IEC 9646-5 template and to Annex A of this document. For a lab, that means the final report must keep the Annex A structure so the customer can compare results consistently.

Clause 8 requires an augmented partial PIXIT proforma and then a PIXIT proforma for the ATS in Annex C. Annex B is the technical baseline, and extra questions may be added to prepare the Means of Testing (MOT) or the test laboratory for a specific Implementation Under Test (IUT).

ATS realization and executable testing

Clause 9 says a test realizer shall comply with ISO/IEC 9646-4 when producing the MOT and the Executable Test Suite (ExTS). The ExTS must be technically equivalent to the ATS in Annex C, and all abstract test event sequences must be realizable in executable form. Any extra checking done by the test system stays outside the ATS verdict rules.

What terms does SIST EN 301 070-4 V1.1.2:2004 define?

• Abstract Test Case (ATC) - A complete set of actions for one test purpose at the abstraction level of the ATM.
• Abstract Test Method (ATM) - The description of how the Implementation Under Test (IUT) is tested in a way that is independent of a specific tester design.
• Abstract Test Suite (ATS) - The collection of abstract test cases used for conformance testing.
• Implementation Under Test (IUT) - The protocol implementation being examined by testing.
• Means of Testing (MOT) - The equipment and procedures used to derive, select, parameterize and execute test cases and produce a conformance log.
• Protocol Implementation Conformance Statement (PICS) - The supplier’s statement of which protocol capabilities are implemented.
• Protocol Implementation eXtra Information for Testing (PIXIT) - The supplier’s testing information needed to run the appropriate test suite against the IUT.
• Point of Control and Observation (PCO) - The point in the test setup where test events are controlled and observed.

Who uses SIST EN 301 070-4 V1.1.2:2004?

SIST EN 301 070-4 V1.1.2:2004 is used by test laboratories, test realisers, equipment suppliers, and operators preparing conformance testing for exchanges with ISUP v3 and INAP CS1. It is also relevant to quality managers and buyers who need evidence that a switch, network element, or test service can be assessed against a defined ATS and reporting format.

In practice, users apply it to:

• prepare the PIXIT before testing
• configure the test environment and ancillary protocols
• run conformance campaigns
• produce a PCTR
• build an executable test suite from the ATS

Which standards are used with SIST EN 301 070-4 V1.1.2:2004?

Standard	What it contributes
EN 301 070-1	The protocol specification for ISUP v3 interactions with INAP CS1 that this part tests
EN 300 356-1	ISUP v3 basic services for the international interface
ETS 300 374-1	INAP CS1 protocol specification
ISO/IEC 9646-1, -2, -3, -4, -5, -7	Conformance testing methodology, ATS specification, TTCN, test realization, laboratory requirements, and ICS concepts
ITU-T Recommendation Q.762	ISUP signalling system reference and message acronyms
ITU-T Recommendation E.164	ISDN number structure used in the definitions
EN 301 067-3	Source of the test purpose identifiers reused as test case names

What does the SIST EN 301 070-4 V1.1.2:2004 document contain?

SIST EN 301 070-4 V1.1.2:2004 contains the ATS in TTCN graphical and machine-processable forms, plus the proformas needed to document test results and pre-test information. Annex A provides a structured PCTR with identification, conformance summaries, test campaign tables and observations.

Annex B gives the PIXIT proforma, including general configuration, parameter values, timer values, INAP-related information and PICS-related test suite parameters. Annex C provides the ATS itself and points to the TTCN.GR and TTCN.MP files delivered with the document.

The document therefore supports the full conformance-testing workflow: configure the IUT, run the test suite, and record the results in a standardized report.

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.DSOLNDFLMVNHJDRIRUPDVSHFLILNDFLMDIntegrated Services Digital Network (ISDN); Signalling System No.7 (SS7); ISDN User Part (ISUP) version 3 interactions with the Intelligent Network Application Part (INAP); Part 4: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification33.080Digitalno omrežje z integriranimi storitvami (ISDN)Integrated Services Digital Network (ISDN)ICS:Ta slovenski standard je istoveten z:EN 301 070-4 Version 1.1.2SIST EN 301 070-4 V1.1.2:2004en01-april-2004SIST EN 301 070-4 V1.1.2:2004SLOVENSKI
STANDARD
ETSIEN301070-4V1.1.2(2000-11)EuropeanStandard(Telecommunicationsseries)IntegratedServicesDigitalNetwork(ISDN);SignallingSystemNo.7(SS7);ISDNUserPart(ISUP)version3interactionswiththeIntelligentNetworkApplicationPart(INAP);Part4:AbstractTestSuite(ATS)andpartialProtocolImplementationeXtraInformationforTesting(PIXIT)proformaspecificationSIST EN 301 070-4 V1.1.2:2004

ETSIETSIEN301070-4V1.1.2(2000-11)2ReferenceDEN/SPAN-01044-4KeywordsATS,INAP,ISDN,ISUP,PIXIT,SS7ETSI650RoutedesLuciolesF-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 301 070-4 V1.1.2:2004

ETSIETSIEN301070-4V1.1.2(2000-11)3ContentsIntellectualPropertyRights.5Foreword.51Scope.62References.63Definitionsandabbreviations.73.1Definitions.73.2Abbreviations.84AbstractTestMethod(ATM).95Untestabletestpurposes.96ATStoTPmap.97PCTRconformance.98PIXITconformance.109ATSconformance.10AnnexA(normative):ProtocolConformanceTestReport(PCTR)ProformaforISDNUserPart(ISUP)v3andINAPCS1.11A.1Identificationsummary.11A.1.1Protocolconformancetestreport.11A.1.2IUTidentification.11A.1.3Testingenvironment.11A.1.4Limitsandreservation.11A.1.5Comments.12A.2IUTConformancestatus.12A.3Staticconformancesummary.12A.4Dynamicconformancesummary.12A.5Staticconformancereviewreport.12A.6Testcampaignreport.13A.7Observations.17AnnexB(normative):PIXITproformaforISDNUserPart(ISUP)v3andINAPCS1.18B.1Identificationsummary.18B.2Abstracttestsuitesummary.18B.3Testlaboratory.18B.4Clientidentification.18B.5Systemundertest.19B.6Ancillaryprotocols.19B.7ProtocolinformationforISUP.19B.7.1Protocolidentification.19B.7.2IUTinformation-PIXITproformatables.19B.7.2.1Generalconfiguration.19B.7.2.2Parametervalues.20B.7.2.3Timervalues.21SIST EN 301 070-4 V1.1.2:2004

ETSIETSIEN301070-4V1.1.2(2000-11)4B.7.2.4INAPrelatedinformation.21B.7.2.5PICSrelatedTestSuiteParameter.21AnnexC(normative):ATSforISDNUserPart(ISUP)v3-INAPCS1.22C.1TheTTCNGraphicalform(TTCN.GR).22C.2TheTTCNMachineProcessableform(TTCN.MP).22Bibliography.23History.24SIST EN 301 070-4 V1.1.2:2004

ETSIETSIEN301070-4V1.1.2(2000-11)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).Thepresentdocumentispart4ofamulti-partENcoveringtheapplicationofIntegratedServicesDigitalNetwork(ISDN);SignallingSystemNo.7;ISDNUserPart(ISUP)version3interactionswiththeIntelligentNetworkApplicationPart(INAP),asidentifiedbelow:Part1:"Protocolspecification[ITU-TRecommendationQ.1600(1997),modified]";Part2:"ProtocolImplementationConformanceStatement(PICS)proformaspecification";Part3:"TestSuiteStructureandTestPurposes(TSS&TP)specification";Part4:"AbstractTestSuite(ATS)andpartialProtocolImplementationeXtraInformationforTesting(PIXIT)proformaspecification".NationaltranspositiondatesDateofadoptionofthisEN:27October2000DateoflatestannouncementofthisEN(doa):31January2001DateoflatestpublicationofnewNationalStandardorendorsementofthisEN(dop/e):31July2001DateofwithdrawalofanyconflictingNationalStandard(dow):31July2001SIST EN 301 070-4 V1.1.2:2004

ETSIETSIEN301070-4V1.1.2(2000-11)61ScopeThepresentdocumentcontainsthevalidation(conformance)testspecificationfortheinteractionbetweenISUPv3andINAPCS1definedin[1].ThisRecommendationappliesonlytoexchangeshavingimplementedtheISUPv3protocolspecificationinthecallcontrolfunction(CCF)andtheINAPCS1intheserviceswitchingfunction(SSF)oftheexchange.ItisapplicableforvalidationtestingofalltypesofexchangesasdefinedintheISUPv3protocolspecification.Thepresentdocumentdoesnotdealwithcompatibilitytesting.ThepresentdocumentpresentsthePIXIT,PCTRtheATSandtherequirementsregardingthechosentestmethod.2ReferencesThefollowingdocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthepresentdocument.• Referencesareeitherspecific(identifiedbydateofpublication,editionnumber,versionnumber,etc.)ornon-specific.• Foraspecificreference,subsequentrevisionsdonotapply.• Foranon-specificreference,thelatestversionapplies.• Anon-specificreferencetoanETSshallalsobetakentorefertolaterversionspublishedasanENwiththesamenumber.[1]ETSIEN301070-1(V1.2):"IntegratedServicesDigitalNetwork(ISDN);SignallingSystemNo.7;ISDNUserPart(ISUP)version3interactionswiththeIntelligentNetworkApplicationPart(INAP);Part1:Protocolspecification[ITU-TRecommendationQ.1600(1997),modified]".[2]ETSIEN300356-1(V3.2):"IntegratedServicesDigitalNetwork(ISDN);SignallingSystemNo.7;ISDNUserPart(ISUP)version3fortheinternationalinterface;Part1:Basicservices[ITU-TRecommendationsQ.761toQ.764(1997),modified]".[3]ITU-TRecommendationQ.762:"SpecificationsofSignallingSystemNo.7-ISDNuserpart".[4]ISO/IEC9646-1:"Informationtechnology-OpenSystemsInterconnection-Conformancetestingmethodologyandframework-Part1:Generalconcepts".[5]ISO/IEC9646-2:"Informationtechnology-OpenSystemsInterconnection-Conformancetestingmethodologyandframework-Part2:AbstractTestSuitespecification".[6]ISO/IEC9646-3:"Informationtechnology-OpenSystemsInterconnection-Conformancetestingmethodologyandframework-Part3:TheTreeandTabularCombinedNotation(TTCN)".[7]ISO/IEC9646-5:"Informationtechnology-OpenSystemsInterconnection-Conformancetestingmethodologyandframework-Part5:Requirementsontestlaboratoriesandclientsfortheconformanceassessmentprocess".[8]ISO/IEC9646-7:"Informationtechnology-OpenSystemsInterconnection-Conformancetestingmethodologyandframework-Part7:ImplementationConformanceStatements".[9]ETSIETS300374-1(1994):"IntelligentNetwork(IN);IntelligentNetworkCapabilitySet1(CS1);CoreIntelligentNetworkApplicationProtocol(INAP);Part1:Protocolspecification".[10]ITU-TRecommendationE.164:"Theinternationalpublictelecommunicationnumberingplan".[11]ETSIEN301067-3:"BroadbandIntegratedServicesDigitalNetwork(B-ISDN);DigitalSubscriberSignallingSystemNo.two(DSS2)protocol;Connectioncharacteristics;Negotiationduringcall/connectionestablishmentphase;Part3:TestSuiteStructureandTestPurposes(TSS&TP)specificationfortheuser".SIST EN 301 070-4 V1.1.2:2004

ETSIETSIEN301070-4V1.1.2(2000-11)7[12]ISO/IEC9646-4:"Informationtechnology-OpenSystemsInterconnection-Conformancetestingmethodologyandframework-Part4:Testrealization".3Definitionsandabbreviations3.1DefinitionsForthepurposesofthepresentdocument,thefollowingtermsanddefinitionsapply:• termsdefinedinISDNUserPart(ISUP)referencespecification[1]to[2];• termsdefinedinISO/IEC9646-1[4],ISO/IEC9646-3[6]andinISO/IEC9646-7[8].Inparticular,thefollowingtermsapply:AbstractTestCase(ATC):completeandindependentspecificationoftheactionsrequiredtoachieveaspecifictestpurpose,definedatthelevelofabstractionofaparticularAbstractTestMethod,startinginastabletestingstateandendinginastabletestingstate(see[4],subclause3.3.3).AbstractTestMethod(ATM):descriptionofhowanIUTistobetested,givenatanappropriatelevelofabstractiontomakethedescriptionindependentofanyparticularrealizationofaMeansofTesting,butwithenoughdetailtoenableabstracttestcasestobespecifiedforthismethod(see[4],subclause3.3.5).AbstractTestSuite(ATS):testsuitecomposedofabstracttestcases(see[4],subclause3.3.6).ImplementationUnderTest(IUT):implementationofoneormoreOSIprotocolsinanadjacentuser/providerrelationship,beingpartofarealopensystemwhichistobestudiedbytesting(see[4],subclause3.3.43).ISDNnumber:numberconformingtothenumberingandstructurespecifiedinITU-TRecommendationE.164[10].MeansofTesting(MOT):combinationofequipmentandproceduresthatcanperformthederivation,selection,parameterizationandexecutionoftestcases,inconformancewithareferencestandardizedATS,andcanproduceaconformancelog(see[4],subclause3.3.54).PICSproforma:document,intheformofaquestionnaire,whichwhencompletedforanimplementationorsystembecomesthePICS.PIXITproforma:document,intheformofaquestionnaire,whichwhencompletedfortheIUTbecomesthePIXIT.PointofControlandObservation:pointwithinatestingenvironmentwheretheoccurrenceoftesteventsistobecontrolledandobserved,asdefinedinanAbstractTestMethod(see[4],subclause3.3.64).Pre-testcondition:settingorstateintheIUTwhichcannotbeachievedbyprovidingstimulusfromthetestenvironment.ProtocolImplementationConformanceStatement(PICS):statementmadebythesupplierofaprotocolclaimedtoconformtoagivenspecification,statingwhichcapabilitieshavebeenimplemented(see[4],subclause3.3.39andsubclause3.3.80).ProtocolImplementationeXtraInformationforTesting(PIXIT):statementmadebyasupplierorimplementorofanIUT(protocol)whichcontainsorreferencesalloftheinformationrelatedtotheIUTanditstestingenvironment,whichwillenablethetestlaboratorytorunanappropriatetestsuiteagainsttheIUT(see[4],subclause3.3.41andsubclause3.3.81).SystemUnderTest(SUT):realopensysteminwhichtheIUTresides(see[4],subclause3.3.103).SIST EN 301 070-4 V1.1.2:2004

ETSIETSIEN301070-4V1.1.2(2000-11)83.2AbbreviationsForthepurposesofthepresentdocument,thefollowingabbreviationsapply:ASEApplicationServiceEntityASPAbstractServicePrimitiveASSPAssistingSignallingSwitchingPointATMAbstractTestMethodATSAbstractTestSuiteCCBSCompletionofCallstoBusySubscriberCCFCallControlFunctionCDCallDeflectionCDIVCallDIVersionCLIPCallingLineIdentificationPresentationCLIRCallingLineIdentificationRestrictionCOLPConnectedLineIdentificationPresentationCOLRConnectedLineIdentificationRestrictionCS1capabilityset1DLEDestinationLocalExchangeECTExplicitCallTransferICSImplementationConformanceStatementINAPIntelligentNetworkApplicationProtocolISDNIntegratedServicesDigitalNetworkISUPISDNUserPartISSPInitiatingSignallingSwitchingPointIUTImplementationUnderTestOLEOriginatingLocalExchangeLTLowerTesterMCIDMaliciousCallIdentificationMOTMeansOfTestingMTCMainTestComponentMTPMessageTransferPartPCOPointofControlandObservationPICSProtocolImplementationConformanceStatementPIXITProtocolImplementationeXtraInformationforTestingPTCParallelTestComponentP&CPromptandCollectUserInformationOperationSCCPSignallingConnectionControlPartSSFServiceSwitchingFunctionSPSignallingPointSUTSystemUnderTestTPTestPurpose(contextdependent)TCPTestCo-ordinationProceduresTSSTestSuiteStructureTSS&TPTestSuiteStructureandTestPurposesTTCNTreeandTabularCombinedNotationTheISUPmessageacronymscanbefoundintable2ofITU-TRecommendationQ.762[3].ThefollowingabbreviationsapplyforISUPparametersandparametervalues.AdSgAddressSignalsCgPNCallingPartyNumberGenNotGenericNotificationTMRTransmissionMediumRequirementUSIUserServiceIndicatorSIST EN 301 070-4 V1.1.2:2004

ETSIETSIEN301070-4V1.1.2(2000-11)94AbstractTestMethod(ATM)TheremotetestmethodisappliedfortheuserATS.ThePointofControlandObservation(PCO)residesattheserviceaccesspointbetweenlayers2and3.ThisPCOisnamed"L0"(forLower).TheL0PCOisusedtocontrolandobservethebehaviouroftheImplementationUnderTest(IUT)andtestcaseverdictsareassigneddependingonthebehaviourobservedatthisPCO.TesterSUTLTIUTPCOLayer2Layer2Layer1Layer1ServiceproviderFigure1:RemotetestmethodISO/IEC9646-2[5]allowstheinformalexpressionofTestCo-ordinationProcedures(TCP)betweentheSystemUnderTest(SUT)upperlayer(s)andtheLowerTester(LT).IntheATScontainedinannexC,TCPisachievedbyuseofasecond"informal"PCO,called"O"(forOperator).ThisPCOisusedtospecifycontrolbutnotobservationabovetheIUTandconsequently,eventsatthisPCOareneverusedtogeneratetestcaseverdicts.TheuseofthisOPCOisregardedasapreferredalternativetotheuseoftheimplicitsendevent,inthatitallowstheATStospecifyinaclearandmeaningfulwaywhatactionsarerequiredtobeperformedontheIUT.5UntestabletestpurposesTherearenountestabletestpurposesassociatedwiththisATS.6ATStoTPmapTheidentifiersusedfortheTPs(seeEN301067-3[11])arereusedastestcasenames.Thusthereisastraightforwardone-to-onemapping.7PCTRconformanceAtestlaboratory,whenrequestedbyaclienttoproduceaPCTR,isrequired,asspecifiedinISO/IEC9646-5[7],toproduceaPCTRconformantwiththePCTRtemplategiveninannexBofISO/IEC9646-5[7].Furthermore,atestlaboratory,offeringtestingfortheATSspecificationcontainedinannexC,whenrequestedbyaclienttoproduceaPCTR,isrequiredtoproduceaPCTRconformantwiththePCTRproformacontainedinannexAofthepresentdocument.APCTRwhichconformstothisPCTRproformaspecificationshallpreservethecontentandorderingoftheclausescontainedinannexA.ClauseA.6ofthePCTRmaycontainadditionalcolumns.Ifincluded,theseshallbeplacedtotherightoftheexistingcolumns.Textinitalicsmayberetainedbythetestlaboratory.SIST
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