SIST EN 300 659-3 V1.3.1:2003

Access and Terminals (AT); Analogue access to the Public Switched Telephone Network (PSTN); Subscriber line protocol over the local loop for display (and related) services; Part 3: Data link message and parameter codings

Definition of the protocol for data link messages and parameter codings on analogue lines required to support display services such as Calling Line Identification Presentation for the PSTN.

Dostop in terminali (AT) – Analogni dostop do javnega komutiranega telefonskega omrežja (PSTN) – Protokol naročniškega voda v krajevni zanki za prikazovalne (in sorodne) storitve – 3. del: Kodiranje sporočil in parametrov podatkovne povezave

General Information

• Status: Published
• Publication Date: 30-Nov-2003
• ICS: 33.040.35 - Telephone networks
• 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 300 659-3 V1.3.1 (2001-01) - Access and Terminals (AT); Analogue access to the Public Switched Telephone Network (PSTN); Subscriber line protocol over the local loop for display (and related) services; Part 3: Data link message and parameter codings

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Access and Terminals (AT); Analogue access to the Public Switched Telephone Network (PSTN); Subscriber line protocol over the local loop for display (and related) services; Part 3: Data link message and parameter codings33.040.35Telefonska omrežjaTelephone networksICS:Ta slovenski standard je istoveten z:EN 300 659-3 Version 1.3.1SIST EN 300 659-3 V1.3.1:2003en01-december-2003SIST EN 300 659-3 V1.3.1:2003SLOVENSKI
STANDARD
ETSIEN300659-3V1.3.1(2001-01)EuropeanStandard(Telecommunicationsseries)AccessandTerminals(AT);AnalogueaccesstothePublicSwitchedTelephoneNetwork(PSTN);Subscriberlineprotocoloverthelocalloopfordisplay(andrelated)services;Part3:DatalinkmessageandparametercodingsSIST EN 300 659-3 V1.3.1:2003

ETSIETSIEN300659-3V1.3.1(2001-01)2ReferenceDEN/AT-030006-3Keywordsdata,PSTN,protocol,serviceETSI650RoutedesLuciolesF-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.©EuropeanTelecommunicationsStandardsInstitute2001.Allrightsreserved.SIST EN 300 659-3 V1.3.1:2003

ETSIETSIEN300659-3V1.3.1(2001-01)3ContentsIntellectualPropertyRights.5Foreword.51Scope.72References.73Definitionsandabbreviations.73.1Definitions.73.2Abbreviations.74Dataencoding.85DataLinkmessageandparametercodings.85.1DataLinkmessageandgeneralparameterrequirements.85.1.1DataLinkMessage.85.1.2Parameter.85.1.3TEconsiderations.95.2DataLinkmessagetypes.95.2.1CallSetupmessage.95.2.2MessageWaitingIndicatormessage.105.2.3AdviceofChargemessage.115.2.4ShortMessageServicemessage.115.3Parametertypes.125.4Parametercoding.125.4.1Dateandtimeparameter.125.4.2CallingLineIdentityparameter.135.4.3CalledLineIdentityparameter.135.4.4ReasonforAbsenceofCallingLineIdentityparameter.145.4.5CallingPartyNameparameter.145.4.6ReasonforAbsenceofCallingPartyNameparameter.145.4.7VisualIndicatorparameter.155.4.8MessageIdentificationparameter.155.4.9LastMessageCLIparameter.155.4.10ComplementaryDateandTimeparameter.165.4.11ComplementaryCallingLineIdentityparameter.165.4.12CallTypeparameter.175.4.13FirstCalledLineIdentityparameter.175.4.14NumberofMessagesparameter.175.4.15TypeofForwardedCallparameter.185.4.16TypeofCallingUserparameter.185.4.17RedirectingNumberparameter.195.4.18Chargeparameter.195.4.19AdditionalChargeparameter.205.4.20DurationoftheCallparameter.215.4.21NetworkProviderIdentityparameter.225.4.22CarrierIdentityparameter.225.4.23SelectionofTerminalFunctionparameter.225.4.24Displayinformationparameter.235.4.25ServiceInformationparameter.235.4.26Extensionfornetworkoperatoruseparameter.24SIST EN 300 659-3 V1.3.1:2003

ETSIETSIEN300659-3V1.3.1(2001-01)4AnnexA(normative):PSTNCLIPserviceparameterlist.25AnnexB(normative):Parameterlistperservice.26AnnexC(informative):Internationalreferencealphabet-7-bitbasiccodetable.30AnnexD(informative):Examplesforchargeparameteruse.32D.1Example:Currencyamount(23,45FRF).32D.2Example:onlyunits(23)withoutpriceperunit.32D.3Example:units(78)withpriceperunit(0,12DEM).33Bibliography.34History.35SIST EN 300 659-3 V1.3.1:2003

ETSIETSIEN300659-3V1.3.1(2001-01)5IntellectualPropertyRightsIPRsessentialorpotentiallyessentialtothepresentdocumentmayhavebeendeclaredtoETSI.TheinformationpertainingtotheseessentialIPRs,ifany,ispubliclyavailableforETSImembersandnon-members,andcanbefoundinETSISR000314:"IntellectualPropertyRights(IPRs);Essential,orpotentiallyEssential,IPRsnotifiedtoETSIinrespectofETSIstandards",whichisavailablefromtheETSISecretariat.LatestupdatesareavailableontheETSIWebserver(http://www.etsi.org/ipr).TheattentionofETSIhasbeendrawntotheIntellectualPropertyRights(IPRs)listedbelowwhichare,ormaybe,ormaybecome,Essentialtothepresentdocumentand,inparticular,onhookdatatransmissionassociatedwithringing,networkoperatoroption:"transmissionduringringing".TheIPRownerhasundertakentograntirrevocablelicences,onfair,reasonableandnon-discriminatorytermsandconditionsundertheseIPRspursuanttotheETSIIPRPolicy.FurtherdetailspertainingtotheseIPRscanbeobtaineddirectlyfromtheIPRowner.ThepresentIPRinformationhasbeensubmittedtoETSIandpursuanttotheETSIIPRPolicy,noinvestigation,includingIPRsearches,hasbeencarriedoutbyETSI.NoguaranteecanbegivenastotheexistenceofotherIPRsnotreferencedinETSISR000314(ortheupdatesontheETSIWebserver)whichare,ormaybe,ormaybecome,essentialtothepresentdocument.IPRs:USA4,582,956Canada1,225,726Belgium0,150,181France0,150,181UnitedKingdom0,150,181Japan1,832,616Netherlands0,150,181Sweden0,150,181Germany3,376,377TherelatedInternationalPatentApplication(WHO85/00488)designatedthefollowingcountries:AT,AU,BE,BR,CH,DE,DK,FI,FR,GB,JP,LU,NL,NO,SEandSU.IPRowner:AT&T10IndependenceBlvd.Warren,NJ07059-6799USAContact:Mr.RichDeFeliceTel:[phone]Fax:[phone]ForewordThisEuropeanStandard(Telecommunicationsseries)hasbeenproducedbyETSITechnicalCommitteeAccessandTerminals(AT).Version1.2.1ofthepresentdocumenthadbeensubmittedtoOne-stepApprovalProcedure200017butwaswithdrawnduetothereceiptofsubstantialtechnicalcomments.Thepresentdocumentispart3ofamulti-partstandardcoveringthePSTNsubscriberlineprotocoloverthelocalloopfordisplay(andrelated)services,asdescribedbelow:Part1:"On-hookdatatransmission";Part2:"Off-hookdatatransmission";Part3:"Datalinkmessageandparametercodings".SIST EN 300 659-3 V1.3.1:2003

ETSIETSIEN300659-3V1.3.1(2001-01)6NationaltranspositiondatesDateofadoptionofthisEN:12January2001DateoflatestannouncementofthisEN(doa):30April2001DateoflatestpublicationofnewNationalStandardorendorsementofthisEN(dop/e):31October2001DateofwithdrawalofanyconflictingNationalStandard(dow):31October2001SIST EN 300 659-3 V1.3.1:2003

ETSIETSIEN300659-3V1.3.1(2001-01)71ScopeThepresentdocumentspecifiesthedatalinkmessageandparametercodingsforthePSTNsubscriberlineprotocoltosupportdisplayandrelatedservicessentbytheLocalExchange(LE).Thedatatransmissioninthesubscriberlineprotocolisaccomplishedbyusingasynchronousvoice-bandFrequency-ShiftKeying(FSK)signalling.2ReferencesThefollowingdocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthepresentdocument.• Referencesareeitherspecific(identifiedbydateofpublication,editionnumber,versionnumber,etc.)ornon-specific.• Foraspecificreference,subsequentrevisionsdonotapply.• Foranon-specificreference,thelatestversionapplies.• Anon-specificreferencetoanETSshallalsobetakentorefertolaterversionspublishedasanENwiththesamenumber.[1]ETSIETS300648(1997):"PublicSwitchedTelephoneNetwork(PSTN);CallingLineIdentificationPresentation(CLIP)supplementaryservice;Servicedescription".[2]CCITTRecommendationQ.11(1988):"Numberingplanfortheinternationaltelephoneservice".[3]CCITTRecommendationT.50(1992):"InternationalReferenceAlphabet(IRA)(FormerlyInternationalAlphabetNo.5orIA5)-Informationtechnology-7-bitcodedcharactersetforinformationinterchange".[4]ETSITR101292:"PublicSwitchedTelephoneNetwork(PSTN);Protocoloverthelocalloopfordisplayandrelatedservices;Proposedenhancementsandmaintenanceofexistingstandards".3Definitionsandabbreviations3.1DefinitionsForthepurposesofthepresentdocument,thefollowingtermsanddefinitionsapply:callinglineidentity:seeETS300648[1]graphiccharacter:characterthathasavisualrepresentationnormallyhand-written,printedordisplayed;inIRAcharacters2/1to7/14(seeCCITTRecommendationT.50[3])3.2AbbreviationsForthepurposesofthepresentdocument,thefollowingabbreviationsapply:AOC-DAdviceOfChargeDuringthecallAOC-EAdviceOfChargeattheEndofthecallAOC-SAdviceOfChargeatcallSet-upANAccessNetworkCCBSCompletionofCallstoBusySubscriberCCNRCompletionofCallsonNoReplyCLIPCallingLineIdentificationPresentationCLIRCallingLineIdentificationRestrictionSIST EN 300 659-3 V1.3.1:2003

ETSIETSIEN300659-3V1.3.1(2001-01)8CNIPCallingNameIdentificationPresentationCNIRCallingNameIdentificationRestrictionCTConnectionTypeFSKFrequency-ShiftKeyingIRAInternationalReferenceAlphabetLELocalExchangeMSNMultipleSubscriberNumberMWIMessageWaitingIndicationNPINetworkProviderIdentityNPNNetworkProvidedNumberPSTNPublicSwitchedTelephoneNetworkSDSSServerDisplayandScriptServicesSMSShortMessageServiceSUBSubaddressingTETerminalEquipmentUPNUserProvidedNumberVPNVirtualPrivateNetwork4DataencodingIRA,asspecifiedinCCITTrecommendationT.50[3](seeannexC)includingnationalversions,shallbeusedforthecharactercoding.Controlcharacters0/0to1/15and7/15arenotusedwithinthisprotocol.Characters8/0to15/15arereservedfornetworkoperatoruse.5DataLinkmessageandparametercodings5.1DataLinkmessageandgeneralparameterrequirements5.1.1DataLinkMessageADataLinkmessage(forsimplicity:amessage)isgenerallyrelatedtoagivenservice,butcanbeusedinsupportofseveraldifferentapplications(eachofthemrequiringdifferentparameters).Foreachmessagetype(orforeachserviceifthesamemessagetypeisusedfordifferentapplications)alistofparametersisdefined.Parametersmaybesentinanyorderwithinamessage.Amessagecancontainparametersfornetworkoperatoruseonly.ArangewithintheMessagetypecodingisreservedfornetworkoperatoruse.5.1.2ParameterAparametershallbeusedonlyonceineachmessage.Theparameter"Extensionfornetworkoperatoruse"(seesubclause5.4.26)shallbeincludedinthemessagewhenareservedvaluefornetworkoperatorisusedinMessagetype,ParametertypeorParameterdatavalue.Thesameparametermaybeusedwithindifferentmessages(ordifferentservices).Parameterscanbeeithermandatoryoroptionalaccordingtotheservicedescription.ArangewithintheParametertypecodingisreservedfornetworkoperatoruse.Arangewithinthevaluesofaparametercanbereservedfornetworkoperatoruse.SIST EN 300 659-3 V1.3.1:2003

ETSIETSIEN300659-3V1.3.1(2001-01)95.1.3TEconsiderationsTheTEdoesnotneedtoknowwhichparametersaremandatory/optional.TheTEdecideshowtohandletheparameters(e.g.todisplayinformationornot).TheTEshoulddiscardaparameterwithanunknownvalue.TheTEshoulddiscardanunknownmessage.TheTEshoulddiscardanunknownparameterinaknownmessage,keepingtheknownparameters.Ifmutuallyexclusiveparametersarefoundinamessage,theTEshoulddiscardthemessage.Iftwoormoreofthesameparameters,butwithdifferentvalues,arefoundinamessage,theTEshoulddiscardthemessage.Iftwoparameterswithinamessageareidentical(sametypecodingvalue)theTEshoulddiscardthesecondparameter.IftheTErecognizesthe"Extensionfornetworkoperator"parameterdata,itshouldprocessthenetworkoperatorspecificMessageand/orParameterinaccordancewiththenetworkoperatorspecifications.IftheTEdoesnotrecognizethe"Extensionfornetworkoperator"parameter,theTEshoulddiscard:• thecompletemessage,ifitisanetworkoperatorspecifictypeofMessage;• theparameter,ifitisanetworkoperatorspecificParameterorParametervalue.5.2DataLinkmessagetypesTable1summarizesthemessagessupportedinthepresentdocument.Table1:DataLinkmessagetypesMessageTypeBinarycodingHexadecimalcodingReference(clause)CallSet-up10000000805.2.1MessageWaitingIndicator10000010825.2.2AdviceofCharge10000110865.2.3ShortMessageService10001001895.2.4ReservedforNetworkOperatoruse11110001to11111111F1toFF-5.2.1CallSetupmessageThismessageisusedtosendinformationrelatedwithanincomingcall.E.g.CallingLineIdentificationPresentation(CLIP)andrelatedservices.TheCallset-upmessagemaycontainthefollowingparameters:Table2:Callset-upmessageparametersParametertypeReference(clause)DateandTime5.4.1CallingLineIdentity5.4.2OrReasonforabsenceofCallingLineIdentity5.4.4CalledLineIdentity5.4.3SIST EN 300 659-3 V1.3.1:2003

ETSIETSIEN300659-3V1.3.1(2001-01)10CallingPartyName5.4.5OrReasonforabsenceofCallingPartyName5.4.6ComplementaryCallingLineIdentity5.4.11Calltype5.4.12FirstCalledLineIdentity5.4.13NumberofMessages5.4.14TypeofForwardedcall5.4.15TypeofCallingUser5.4.16RedirectingNumber5.4.17NetworkProviderIdentity5.4.21CarrierIdentity5.4.22SelectionofTerminalFunction5.4.23DisplayInformation5.4.24Extensionfornetworkoperatoruse5.4.26Networkoperatorparameter-SeeannexAandannexBfortheparameterstatus(mandatory/optionalattheLE)accordingtoservicerequirements.5.2.2MessageWaitingIndicatormessageThismessagetypeisusedtohandleinformationrelatedtomessagesinamessagesystem.TheMessageWaitingIndicatormessagemaycontainthefollowingparameters:Table3:MessageWaitingIndicatormessageparametersParametertypeReference(clause)DateandTime5.4.1CallingLineIdentity5.4.2OrReasonforabsenceofCallingLineIdentity5.4.4CallingPartyName5.4.5OrReasonforabsenceofCallingPartyName5.4.6VisualIndicator5.4.7MessageIdentification5.4.8LastMessageCLI5.4.9ComplementaryDateandTime5.4.10ComplementaryCallingLineIdentity5.4.11NumberofMessages5.4.14TypeofCallingUser5.4.16NetworkProviderIdentity5.4.21SelectionofTerminalFunction5.4.23DisplayInformation5.4.24Extensionfornetworkoperatoruse5.4.26Networkoperatorparameter-SeeannexBfortheparameterstatus(mandatory/optionalattheLE)accordingtoservicerequirements.SIST EN 300 659-3 V1.3.1:2003

ETSIETSIEN300659-3V1.3.1(2001-01)115.2.3AdviceofChargemessageThismessageisusedtosendinformationrelatedtothechargeofacall.TheAdviceOfChargemessagemaycontainthefollowingparameters:Table4:AdviceOfChargemessageparametersParametertypeReference(clause)DateandTime5.4.1CallingLineIdentity5.4.2OrReasonforabsenceofCallingLineIdentity5.4.4Calledlineidentity5.4.3ComplementaryCallingLineIdentity5.4.11Charge5.4.18AdditionalCharge5.4.19Durationofthecall5.4.20NetworkProviderIdentity5.4.21CarrierIdentity5.4.22SelectionofTerminalFunction5.4.23Displayinformation5.4.24Extensionfornetworkoperatoruse5.4.26Networkoperatorparameter-SeeannexBfortheparameterstatus(mandatory/optionalattheLE)accordingtoservicerequirements.NOTE:TheAdviceofchargeatcallSet-up(AOC-S)hasnotbeenincludedinthepresentdocumentbecauseithasnotbeendeemedfeasibleinthePSTNnetwork.Thecharginginformationisverycomplexandnotuniformwithalloperators.Theinformationtransfermayinterferewiththecommunicationanddisturbtheuserorongoingdatatransmission.5.2.4ShortMessageServicemessageThismessageisusedtosendshorttextmessagestoaTE.TheShortMessageServicemessagemaycontainthefollowingparameters:Table5:ShortMessageServicemessageparametersParametertypeReference(clause)DateandTime5.4.1CallingLineIdentity5.4.2OrReasonforabsenceofCallingLineIdentity5.4.4CallingPartyName5.4.5OrReasonforabsenceofCallingPartyName5.4.6ComplementaryCallingLineIdentity5.4.11TypeofCallingUser5.4.16NetworkProviderIdentity5.4.21SelectionofTerminalFunction5.4.23DisplayInformation5.4.24ServiceInformation5.4.25Extensionfornetworkoperatoruse5.4.26Networkoperatorparameter-SeeannexBfortheparameterstatus(mandatory/optionalattheLE)accordingtoservicerequirements.SIST EN 300 659-3 V1.3.1:2003

ETSIETSIEN300659-3V1.3.1(2001-01)125.3ParametertypesTable6summarizestheParametertypesthataresupported.Table6:ParametertypesBinarycodingHexadecimalcodingLengthParametertype00000001018DateandTime0000001002max.20(note)CallingLineIdentity0000001103max.20(note)CalledLineIdentity00000100041ReasonforAbsenceofCallingLineIdentity0000011107max.50CallingPartyName00001000081ReasonforabsenceofCallingPartyName000010110B1VisualIndicator000011010D3MessageIdentification000011100Emax.20(note)LastMessageCLI000011110F8or10ComplementaryDateandTime0001000010max.20(note)ComplementaryCallingLineIdentity00010001111Calltype0001001012max.20(note)FirstCalledLineIdentity00010011131NumberofMessages00010101151TypeofForwardedcall00010110161TypeofCallinguser000110101Amax.20(note)RedirectingNumber001000002014Charge001000012114AdditionalCharge00100011236DurationoftheCall0011000030max.20NetworkProviderIdentity0011000131max.20CarrierIdentity0100000040max.21SelectionOfTerminalFunction0101000050max.253DisplayInformation01010101551ServiceInformation11100000E010Extensionfornetworkoperatoruse11100001to11111111E1toFF-ReservedfornetworkoperatoruseNOTE:Newapplicationshavebeenidentifiedthatrequiremorethan20digitsandthesemaybeimplementedinthefuturebysomenetworkoperators.Asaresultstudieshavebeeninitiatedtoidentifyamethodofextendingtheparameterfieldsthat:-allowsexistingterminalstodisplayusefulinformationwhenreceivingmorethan20digits;-allowsfurtherextensioninthefuture(ifrequired).5.4Parametercoding5.4.1DateandtimeparameterThepurposeoftheDateandtimeparameteristoprovidethedateandthetimetotheuser.ItindicatesthepointintimewhenthemessagehasbeengeneratedbytheLE.SIST EN 300 659-3 V1.3.1:2003

ETSIETSIEN300659-3V1.3.1(2001-01)13Table7OctetnumberBinarycodingHexadecimalcodingContents10000000101DateandTime20000100008Parameterlength(8)30011XXXX3XMonth'smostsignificantdigit40011XXXX3XMonth'sleastsignificantdigit50011XXXX3XDay'smostsignificantdigit60011XXXX3XDay'sleastsignificantdigit70011XXXX3XHour'smostsignificantdigit80011XXXX3XHour'sleastsignificantdigit90011XXXX3XMinute'smostsignificantdigit100011XXXX3XMinute'sleastsignificantdigitDaysshallrangefrom01to31.Monthsshallrangefrom01(January)to12(December).Hoursshallrangefrom00(midnight)to23.Minutesshallrangefrom00to59.EachdigitshallbecodedaccordingtoCCITTRecommendationT.50[3].5.4.2CallingLineIdentityparameterThepurposeoftheCallingLineIdentityparameteristoidentifytheoriginofacall.Table8OctetnumberBinarycodingHexadecimalcodingContents10000001002CallingLineIdentity(CLI)2000XXXXXXXParameterlength(max.20)3XXXXXXXXXXDigit1.n+2XXXXXXXXXXDigitnDigits(0to9,*and#)shallbecodedaccordingtoCCITTRecommendationT.50[3].Thedigitsmaybeinterspersedwithcharacters"space"(2/0),"-"(2/13),"("(2/8),or")"(2/9).5.4.3CalledLineIdentityparameterThepurposeoftheCalledLineIdentityparameteristoidentifythecalledpartyofacall.Table9OctetnumberBinarycodingHexadecimalcodingContents10000001103CalledLineIdentity2000XXXXXXXParameterlength(max.20)3XXXXXXXXXXDigit1.n+2XXXXXXXXXXDigitnDigits(0to9,*and#)shallbecodedaccordingtoCCITTRecommendationT.50[3].Thedigitsmaybeinterspersedwithcharacters"space"(2/0),"-"(2/13),"("(2/8),or")"(2/9).SIST EN 300 659-3 V1.3.1:2003

ETSIETSIEN300659-3V1.3.1(2001-01)145.4.4ReasonforAbsenceofCallingLineIdentityparameterThepurposeoftheReasonforAbsenceofCallingLineIdentityparameteristodescribethereasonforabsenceofCallingLineIdentity.Theparameters"CallingLineIdentity"and"ReasonforAbsenceofCallingLineIdentity"aremutuallyexclusivewithinamessage.Table10OctetnumberBinarycodingHexadecimalcodingContents10000010004ReasonforabsenceofCLI20000000101Parameterlength(1)3010011110101000010000000to111111114F5080toFFUnavailablePrivate(CLIRinvolved)reservedfornetworkoperatoruse5.4.5CallingPartyNameparameterThepurpos
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