SIST EN 300 188-6 V1.3.4:2003

Integrated Services Digital Network (ISDN); Three-Party (3PTY) supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol; Part 6: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the network

To handle comments and incorporate appropriate corrections into the ATS of DSS1 L2

Digitalno omrežje z integriranimi storitvami (ISDN) – Dopolnilna storitev: konferenca treh (3PTY) – Protokol digitalne naročniške signalizacije št. 1 (DSS1) 6. del: Abstraktni preskušalni niz (ATS) in delna dodatna informacija za preskušanje izvedbe protokola (PIXIT) – Proforma specifikacija za omrežje

General Information

• Status: Published
• Publication Date: 30-Nov-2003
• ICS: 33.080 - Integrated Services Digital Network (ISDN)
• Technical Committee: SS EIT - Technical Board for the electrotechnical, information technology and telecommunications fields
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Dec-2003
• Due Date: 01-Dec-2003
• Completion Date: 01-Dec-2003
• Ref Project: ETSI EN 300 188-6 V1.3.4 (1999-11) - Integrated Services Digital Network (ISDN); Three-Party (3PTY) supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol; Part 6: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the network

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.VWRULWHYIntegrated Services Digital Network (ISDN); Three-Party (3PTY) supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol; Part 6: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the network33.080Digitalno omrežje z integriranimi storitvami (ISDN)Integrated Services Digital Network (ISDN)ICS:Ta slovenski standard je istoveten z:EN 300 188-6 Version 1.3.4SIST EN 300 188-6 V1.3.4:2003en01-december-2003SIST EN 300 188-6 V1.3.4:2003SLOVENSKI
STANDARD



SIST EN 300 188-6 V1.3.4:2003



ETSIEN300188-6V1.3.4(1999-11)EuropeanStandard(Telecommunicationsseries)IntegratedServicesDigitalNetwork(ISDN);ThreeParty(3PTY)supplementaryservice;DigitalSubscriberSignallingSystemNo.one(DSS1)protocol;Part6:AbstractTestSuite(ATS)andpartialProtocolImplementationeXtraInformationforTesting(PIXIT)proformaspecificationforthenetworkSIST EN 300 188-6 V1.3.4:2003



ETSIETSIEN300188-6V1.3.4(1999-11)2ReferenceREN/SPS-05167-6(1qpi0j2o.PDF)KeywordsISDN,DSS1,supplementaryservice,3PTY,ATS,PIXIT,networkETSIPostaladdressF-06921SophiaAntipolisCedex-FRANCEOfficeaddress650RoutedesLucioles-SophiaAntipolisValbonne-FRANCETel.:[phone]Fax:[phone]SiretN°34862356200017-NAF742CAssociationàbutnonlucratifenregistréeàlaSous-PréfecturedeGrasse(06)N°7803/[e-mail]ETSIdeliverablecanbedownloadedfromhttp://www.etsi.orgIfyoufinderrorsinthepresentdocument,sendyourcommentto:[e-mail]Ideliverablemaybemadeavailableinmorethanoneelectronicversionorinprint.Inanycaseofexistingorperceiveddifferenceincontentsbetweensuchversions,thereferenceversionisthePortableDocumentFormat(PDF).Incaseofdispute,thereferenceshouldbetheprintingonETSIprintersofthePDFversionkeptonaspecificnetworkdrivewithinETSISecretariat.CopyrightNotificationNopartmaybereproducedexceptasauthorizedbywrittenpermission.Thecopyrightandtheforegoingrestrictionextendtoreproductioninallmedia.©EuropeanTelecommunicationsStandardsInstitute1999.Allrightsreserved.SIST EN 300 188-6 V1.3.4:2003



ETSIETSIEN300188-6V1.3.4(1999-11)3ContentsIntellectualPropertyRights.6Foreword.61Scope.72References.73Definitionsandabbreviations.83.1Definitions.83.2Abbreviations.84AbstractTestMethod(ATM).94.1DescriptionofATMused.94.1.1ConventionsfortestcomponentsandPCOs.94.1.2Conventionsforvariablesandparameters.114.1.3Conventionsfortheremoteusergroup.114.2AlternativeATM.125Untestabletestpurposes.136ATSconventions.136.1Declarationspart.136.1.1Typedefinitions.136.1.1.1Simpletypedefinitions.136.1.1.2Structuredtypedefinitions.146.1.1.2.1TTCNstructuredtypedefinitions.146.1.1.2.2ASN.1structuredtypedefinitions.146.1.1.3ASPtypedefinitions.156.1.1.3.1TTCNASPtypedefinitions.156.1.1.3.2ASN.1ASPtypedefinitions.166.1.1.4PDUtypedefinitions.166.1.1.4.1TTCNPDUtypedefinitions.166.1.1.4.2ASN.1PDUtypedefinitions.166.1.2Testsuiteconstants.166.1.3Testsuiteparameters.166.1.4Variables.166.1.4.1Testsuitevariables.166.1.4.2Testcasevariables.166.1.5Testsuiteoperationdefinitions.166.2Constraintspart.176.2.1Structuredtypeconstraintdeclaration.176.2.2ASN.1typeconstraintdeclaration.176.2.2.1Specificationofencodingrules.186.2.3ASPtypeconstraintdeclaration.196.2.3.1ASN.1ASPtypeconstraintdeclaration.196.2.3.2TTCNASPtypeconstraintdeclaration.196.2.4PDUtypeconstraintdeclaration.196.2.4.1ASN.1PDUtypeconstraintdeclaration.196.2.4.2TTCNPDUtypeconstraintdeclaration.196.2.5Chainingofconstraints.196.2.5.1Staticchaining.196.2.5.2Dynamicchaining.196.2.6Derivedconstraints.206.2.7Parameterizedconstraints.206.2.8Valueassignment.206.2.8.1Specificvalues.206.2.8.2Matchingvalues.206.3Dynamicpart.21SIST EN 300 188-6 V1.3.4:2003



ETSIETSIEN300188-6V1.3.4(1999-11)46.3.1Testcases.216.3.2Teststeps.216.3.2.1PTC1_IN.216.3.2.2PTC1_OUT.216.3.3Defaults.217ATStoTPmap.218PCTRconformance.219PIXITconformance.2210ATSconformance.22AnnexA(normative):ProtocolConformanceTestReport(PCTR)proforma.23A.1Identificationsummary.23A.1.1Protocolconformancetestreport.23A.1.2IUTidentification.23A.1.3Testingenvironment.23A.1.4Limitsandreservations.24A.1.5Comments.24A.2IUTconformancestatus.24A.3Staticconformancesummary.24A.4Dynamicconformancesummary.24A.5Staticconformancereviewreport.25A.6Testcampaignreport.25A.7Observations.26AnnexB(normative):PartialPIXITproforma.27B.1Identificationsummary.27B.2Abstracttestsuitesummary.27B.3Testlaboratory.27B.4Client(ofthetestlaboratory).28B.5SystemUnderTest(SUT).28B.6Protocolinformation.29B.6.1Protocolidentification.29B.6.2Parametervalues.29B.6.3ActionsrequiredtostimulateIUT.29B.6.4ConfigurationofIUT.30B.6.5Timervalues.30B.7BasiccallPIXITitems.31B.7.1Parametervalues-informationelementcodings.31SIST EN 300 188-6 V1.3.4:2003



ETSIETSIEN300188-6V1.3.4(1999-11)5AnnexC(normative):AbstractTestSuite(ATS).32C.1TheTTCNGraphicalform(TTCN.GR).32C.2TheTTCNMachineProcessableform(TTCN.MP).32AnnexD(informative):GeneralstructureofATS.33AnnexE(informative):Changerecord.34E.1ChangeswithrespecttoEN300188-6(V1.2).34E.2ChangeswithrespecttoETS300188-6(Ed.1).34History.35SIST EN 300 188-6 V1.3.4:2003



ETSIETSIEN300188-6V1.3.4(1999-11)6IntellectualPropertyRightsIPRsessentialorpotentiallyessentialtothepresentdocumentmayhavebeendeclaredtoETSI.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)hasbeenproducedbyETSITechnicalCommitteeSignallingProtocolsandSwitching(SPS).Thepresentdocumentispart6ofamulti-partstandardcoveringtheDigitalSubscriberSignallingSystemNo.one(DSS1)protocolspecificationfortheIntegratedServicesDigitalNetwork(ISDN)ThreeParty(3PTY)supplementaryservice,asdescribedbelow: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".Thepresentversionupdatesthereferencestothebasiccallspecifications.NationaltranspositiondatesDateofadoptionofthisEN:5November1999DateoflatestannouncementofthisEN(doa):29February2000DateoflatestpublicationofnewNationalStandardorendorsementofthisEN(dop/e):31August2000DateofwithdrawalofanyconflictingNationalStandard(dow):31August2000SIST EN 300 188-6 V1.3.4:2003



ETSIETSIEN300188-6V1.3.4(1999-11)71ScopeThissixthpartofEN300188specifiestheAbstractTestSuite(ATS)andpartialProtocolImplementationeXtraInformationforTesting(PIXIT)proformafortheNetworksideoftheTreferencepointorcoincidentSandTreferencepoint(asdefinedinITU-TRecommendationI.411[11])ofimplementationsconformingtothestagethreestandardfortheThreeParty(3PTY)supplementaryserviceforthepan-EuropeanIntegratedServicesDigitalNetwork(ISDN)bymeansoftheDigitalSubscriberSignallingSystemNo.one(DSS1)protocol,EN300188-1[2].EN300188-5[4]specifiestheTestSuiteStructureandTestPurposes(TSS&TP)relatedtothisATSandpartialPIXITproformaspecification.OtherpartsspecifytheTSS&TPandtheATSandpartialPIXITproformafortheUsersideoftheTreferencepointorcoincidentSandTreferencepointofimplementationsconformingtoEN300188-1[2].2ReferencesThefollowingdocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthepresentdocument.• Referencesareeitherspecific(identifiedbydateofpublication,editionnumber,versionnumber,etc.)ornon-specific.• Foraspecificreference,subsequentrevisionsdonotapply.• Foranon-specificreference,thelatestversionapplies.• Anon-specificreferencetoanETSshallalsobetakentorefertolaterversionspublishedasanENwiththesamenumber.[1]EN300403-1(V1.2):"IntegratedServicesDigitalNetwork(ISDN);DigitalSubscriberSignallingSystemNo.one(DSS1)protocol;Signallingnetworklayerforcircuit-modebasiccallcontrol;Part1:Protocolspecification[ITU-TRecommendationQ.931(1993),modified]".[2]EN300188-1(V1.2):"IntegratedServicesDigitalNetwork(ISDN);Three-Party(3PTY)supplementaryservice;DigitalSubscriberSignallingSystemNo.one(DSS1)protocol;Part1:Protocolspecification".[3]EN300188-2(V1.2):"IntegratedServicesDigitalNetwork(ISDN);Three-Party(3PTY)supplementaryservice;DigitalSubscriberSignallingSystemNo.one(DSS1)protocol;Part2:ProtocolImplementationConformanceStatement(PICS)proformaspecification".[4]EN300188-5(V1.2):"IntegratedServicesDigitalNetwork(ISDN);Three-Party(3PTY)supplementaryservice;DigitalSubscriberSignallingSystemNo.one(DSS1)protocol;Part5:TestSuiteStructureandTestPurposes(TSS&TP)specificationforthenetwork".[5]EN300196-1(V1.2):"IntegratedServicesDigitalNetwork(ISDN);Genericfunctionalprotocolforthesupportofsupplementaryservices;DigitalSubscriberSignallingSystemNo.one(DSS1)protocol;Part1:Protocolspecification".[6]ISO/IEC9646-1:"InformationTechnology-OpenSystemsInterconnection-Conformancetestingmethodologyandframework-Part1:Generalconcepts".[7]ISO/IEC9646-2:"InformationTechnology-OpenSystemsInterconnection-Conformancetestingmethodologyandframework-Part2:AbstractTestSuitespecification".[8]ISO/IEC9646-3:"InformationTechnology-OpenSystemsInterconnection-Conformancetestingmethodologyandframework-Part3:TheTreeandTabularCombinedNotation(TTCN)".[9]ISO/IEC9646-4:"InformationTechnology-OpenSystemsInterconnection-Conformancetestingmethodologyandframework-Part4:Testrealization".SIST EN 300 188-6 V1.3.4:2003



ETSIETSIEN300188-6V1.3.4(1999-11)8[10]ISO/IEC9646-5:"InformationTechnology-OpenSystemsInterconnection-Conformancetestingmethodologyandframework-Part5:Requirementsontestlaboratoriesandclientsfortheconformanceassessmentprocess".[11]ITU-TRecommendationI.411(1993):"ISDNuser-networkinterfaces-Referencesconfigurations".[12]CCITTRecommendationX.209(1988):"SpecificationofbasicencodingrulesforAbstractSyntaxNotationOne(ASN.1)".3Definitionsandabbreviations3.1DefinitionsForthepurposesofthepresentdocument,thefollowingtermsanddefinitionsapply:AbstractTestSuite(ATS):seeISO/IEC9646-1[6]ImplementationUnderTest(IUT):seeISO/IEC9646-1[6]LowerTester(LT):seeISO/IEC9646-1[6]PointofControlandObservation(PCO):seeISO/IEC9646-1[6]ProtocolImplementationConformanceStatement(PICS):seeISO/IEC9646-1[6]PICSproforma:seeISO/IEC9646-1[6]ProtocolImplementationeXtraInformationforTesting(PIXIT):seeISO/IEC9646-1[6]PIXITproforma:seeISO/IEC9646-1[6]SystemUnderTest(SUT):seeISO/IEC9646-1[6]UpperTester(UT):seeISO/IEC9646-1[6]3.2AbbreviationsForthepurposesofthepresentdocument,thefollowingabbreviationsapply:3PTYThreePartyASPAbstractServicePrimitiveATMAbstractTestMethodATSAbstractTestSuiteBERBasicEncodingRulesCMCo-ordinationMessageCPCo-ordinationPointExTSExecutableTestSuiteIUTImplementationUnderTestLTLowerTesterMOTMeansOfTestingMTCMainTestComponentPCOPointofControlandObservationPDUProtocolDataUnitPICSProtocolImplementationConformanceStatementPIXITProtocolImplementationeXtraInformationforTestingPTCParallelTestComponentSUTSystemUnderTestSIST EN 300 188-6 V1.3.4:2003



ETSIETSIEN300188-6V1.3.4(1999-11)9TPTestPurposeTTCNTreeandTabularCombinedNotationUTUpperTester4AbstractTestMethod(ATM)4.1DescriptionofATMusedTherequirementfortestingthenetworkIUTistofocusonthebehaviourofthenetworkIUTattheuser-networkinterfacewhereaTreferencepointorcoincidentSandTreferencepointapplies.ThustheIUTisthenetworkDSS1protocolentityataparticularuser-networkinterfaceandisnotthewholenetwork.ItispossibletospecifyanATSbasedonaSingleparty(remote)testmethodforsuchanIUT.However,itisconsideredthatanATSbasedonsuchanapproachisoflimiteduseastheonlywaytospecifyIUTgeneratedPDUsistousethe"implicitsend"statement.ManyusersofsuchanATSwouldreplacethe"implicitsend"statementswithdescriptionsofthebehaviouratotherinterfaces.AnATSbasedonamulti-partytestmethodisconsideredtobemoreusefulinthatitisclosertohowarealtestsuitewouldbeconstructed.Suchatestmethodspecifiesbehaviouratmultiplenetworkinterfaces.Oneveryimportantlimitationhereisthattestsarefocusedononeparticularinterface.ThusthetestsystemismadeuponeMainTestComponent(MTC)andoneormoreParallelTestComponents(PTC),seefigure1.4.1.1ConventionsfortestcomponentsandPCOsMasterpartSlavepartMTCAPTC2CPA2PTC1CPA1L0PCOL1PCOL2PCOIUTNETWORKFigure1:Multi-partytestmethodSIST EN 300 188-6 V1.3.4:2003



ETSIETSIEN300188-6V1.3.4(1999-11)10Inamaster/slavearrangement,theMTCisconsideredtobethemasterwhilethePTCsaretheslaves.The"slave"testersareonlyanexplicitdescriptionofhowtodealwiththe"other"interfacesduringthetestingprocess,i.e."howtomaketheIUTsendtherequiredmessage".Thismeans,inparticular,thattheverdictwillonlybeassignedfromtheprotocolaspectsobservedontheinterfaceundertest(i.e.bythe"master"tester),asitwouldbeobservedbyaterminalconnectedtothisinterface.Afailureinthecorrelationbetweentheprotocolatthedifferentinterfacestowhichthedifferenttestersareconnected,i.e.inthemechanismofthefunctionalserviceitself,willnotcauseaFAILverdict.Forinstance,iftheIUTfailstosendamessageonthetestedinterfaceafteranotherinterfacehasreceivedtheproperstimulus,theverdictwillbeINCONCLUSIVE.TheMTCMTCAhastwofunctionsinthisconfiguration.Firstly,ithastheMTCfunctionofcontrollingtheoneormorePTCs.ThusitisresponsibleforstartingthePTCsandafterwardsco-ordinatesactivitiesbyexchangingCo-ordinationMessages(CM)withthePTCs.SecondlyitisresponsibleforthebehaviouroftheLowerTester(LT)atPCOL0.Acombinationoftheremoteandmulti-partytestmethodsisapplied.Ascanbeseenfromfigure1,severalPCOsareused.AllPCOsresideattheserviceaccesspointsbetweenlayers2and3.MTCSUTPTC1,2Layer3Layer2Layer1L0IUTL1,2Layer3Layer2Layer1ServiceproviderFigure2:Combinationoftheremoteandmulti-partytestmethodsTheMTCPCOisnamed"L0"("L"forLower).TheL0PCOisusedtocontrolandobservethebehaviouroftheIUTandtestcaseverdictsareassigneddependingonthebehaviourobservedatthisPCO.ThePTCsPTC1,PTC2etc.usePCOsL1,L2etc.ThesePCOsareusedtocontroland,inalimitedway,observethebehaviourofthenetworkequipmentatinterfacesotherthantheoneundertest.NoverdictsareassignedatthesePCOs.Asstatedinapreviousparagraph,thenon-receiptofnetworkgeneratedmessagesatL0,whicharestimulatedbyeventsattheL1,L2etc.,willresultinINCONCLUSIVEratherthanFAILverdictsbeingassigned.SIST EN 300 188-6 V1.3.4:2003



ETSIETSIEN300188-6V1.3.4(1999-11)114.1.2ConventionsforvariablesandparametersMTCAcallreferenceCREF1Bchannel(basic)bch_num1(toPTC1)channelnr(primary)CH_NUM1callreferenceCREF2Bchannel(basic)bch_num2(toPTC2)channelnr(primary)CH_NUM2PCOL0IPN0,LIPN0PTC1callreferenceP1CREFBchannel(basic)P1_bch_numchannelnr(primary)P1_CH_NUMPCOL1IPN1,LIPN1PTC2callreferenceP2CREFBchannel(basic)P2_bch_numchannelnr(primary)P2_CH_NUMPCOL2IPN2,LIPN24.1.3ConventionsfortheremoteusergroupForthisgroup,thesideofthenetworkwhichisbeingtestediswheretheconferenceremoteuserisconnected.ThemostconvenientapproachhereistoconnectPTC1totheIUT.TheMTCis,asfortheservedusergrouptestcases,connectedattheservedusersideofthenetwork.Thisapproachallowsthereuseofteststepsdevelopedfortheservedusergrouptests.Thisapproach,representingaslightmodificationinthetestmethod,isillustratedinfigure3.ThisshowsthatthepartofthenetworkconsideredtobetheIUTisconnectedtoPTC1ratherthanMTC1.SIST EN 300 188-6 V1.3.4:2003



ETSIETSIEN300188-6V1.3.4(1999-11)12MasterpartSlavepartMTCAPTC2CPA2PTC1CPA1L0PCOL1PCOL2PCOIUTNETWORKFigure3:Multi-partytestmethod-modifiedforremoteusertestsThePTC1isusedtoobservethenotificationssentbythenetwork.TheteststepPTC1_remoteUser_CR1isusedtocheckthereceiptofthenotificationanddependingontheresultsendsaCMbacktotheMTC.TheMTCthenissuesaverdictdependingontheCMreceivedfromthePTC1.ThisisdoneinordertomaintaintheconventionthattheMTCisonlyallowedtoissueverdicts.However,oneconsequenceofthisisthatanybehaviourattheservedusersidewhichisnon-conformingwillresultinaFailverdictbeingissuedeventhoughthefocusofthetestsisattheremoteuserside.Thisconstraintisviewedasacceptablegiventhefactthatinanycasethenetworkshallprovideaconformingserveduserinterfaceaswellasoneormoreconformingremoteuserinterfaces.4.2AlternativeATMAsstatedinsubclause4.1,anATSbasedonasingle-party(remote)ATMispossible.SuchanATSmaybegeneratedfromtheonespecifiedinthepresentdocument.Thefollowinggeneralstepsshouldbetaken:1)removeallPTCbehaviour;2)removeallCREATEstatements;3)replaceCMswhichareusedtoprovokePDUsattheMTC,withimplicitsendstatements.Anexample,showingthedifferencebetweenthemulti-partyATMandsingle-partyATMforasingletestcase,isgivenintables1and2.SIST EN 300 188-6 V1.3.4:2003



ETSIETSIEN300188-6V1.3.4(1999-11)13Table1:Testcasedynamicbehaviourtableusingmulti-partyATMTESTCASEDYNAMICBEHAVIOURTestCaseNameHOLD_N04_001GroupRemoteUser_ST_OR_T/Holding/PurposeEnsurethattheIUT,whileintheActivecallstateN10,tonotifythenon-serveduserthatthecallisheldsendsaNOTIFYmessagewithanotificationindicatorcodedas"remotehold"touserBandremainsintheActivecallstate.DefaultDF69901(1)ConfigurationCONFIG1Comments9.2.1validoptionalNr|Label|BEHAVIOURDESCRIPTION|CREF|V|COMMENTS1||CREATE(PTC1:PTC1_IN_servedUser)|||2||+PR31002|||preambleN103||CPA1!CP_MSTARTTWAIT|S_HL||4||L0?NOTIFYr|A_NO20(CREF1,hold_NID)|(P)|5||+CS59901(10,1)|||checkN106||?TIMEOUTTWAIT||(I)|7||+PO49901(1)|||postambleN0DETAILEDCOMMENTS:Table2:Testcasedynamicbehaviourtableusingsingle-partyATMTESTCASEDYNAMICBEHAVIOURTestCaseNameHOLD_N04_001GroupRemoteUser_ST_OR_T/Holding/PurposeEnsurethattheIUT,whileintheActivecallstateN10,tonotifythenon-serveduserthatthecallisheldsendsaNOTIFYmessagewithanotificationindicatorcodedas"remotehold"touserBandremainsintheActivecallstate.DefaultDF69901(1)ConfigurationComments9.2.1validoptionalNr|Label|BEHAVIOURDESCRIPTION|CREF|V|COMMENTS1||+PR31002|||preambleN102|||NO20(CREF1,hold_NID)||3||L0?NOTIFYr|A_NO20(CREF1,hold_NID)|(P)|4||+CS59901(10,1)|||checkN105||?TIMEOUTTWAIT||(I)|6||+PO49901(1)|||postambleN0DETAILEDCOMMENTS:5UntestabletestpurposesTherearenountestabletestcasesassociatedwiththisATSandATM.6ATSconventionsTh
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