SIST EN 300 403-1 V1.3.2:2005

Integrated Services Digital Network (ISDN); Digital Subscriber Signalling System No. one (DSS1) protocol; Signalling network layer for circuit-mode basic call control; Part 1: Protocol specification [ITU-T Recommendation Q.931 (1993), modified]

To update the Date/Time information element according to contribution TD 207 and the BC, LLC with new codepoints. Supporting ETSI Member Organisations; VIAG Interkom, Swisscom, KPN, Telenor.

Digitalno omrežje z integriranimi storitvami (ISDN) - Protokol digitalne naročniške signalizacije št. 1 (DSS1) - Signalizacijska omrežna plast za krmiljenje vodovnega osnovnega klica - 1. del: Specifikacija protokola (priporočilo ITU-T Q.931 (1993), spremenjeno)

General Information

• Status: Published
• Publication Date: 31-Mar-2005
• ICS: 33.080 - Integrated Services Digital Network (ISDN)
• ICS: 35.100.30 - Network layer
• Technical Committee: SPN - Services and Protocols for Networks
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Apr-2005
• Due Date: 01-Apr-2005
• Completion Date: 01-Apr-2005
• Mandate: T-234B
• Ref Project: ETSI EN 300 403-1 V1.3.2 (1999-11) - Integrated Services Digital Network (ISDN); Digital Subscriber Signalling System No. one (DSS1) protocol; Signalling network layer for circuit-mode basic call control; Part 1: Protocol specification [ITU-T Recommendation Q.931 (1993), modified]

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.VSUHPHQMHQRIntegrated Services Digital Network (ISDN); Digital Subscriber Signalling System No. one (DSS1) protocol; Signalling network layer for circuit-mode basic call control; Part 1: Protocol specification [ITU-T Recommendation Q.931 (1993), modified]35.100.30Omrežni slojNetwork layer33.080Digitalno omrežje z integriranimi storitvami (ISDN)Integrated Services Digital Network (ISDN)ICS:Ta slovenski standard je istoveten z:EN 300 403-1 Version 1.3.2SIST EN 300 403-1 V1.3.2:2005en01-april-2005SIST EN 300 403-1 V1.3.2:2005SLOVENSKI
STANDARD



SIST EN 300 403-1 V1.3.2:2005



ETSIEN300403-1V1.3.2(1999-11)EuropeanStandard(Telecommunicationsseries)IntegratedServicesDigitalNetwork(ISDN);DigitalSubscriberSignallingSystemNo.one(DSS1)protocol;Signallingnetworklayerforcircuit-modebasiccallcontrol;Part1:Protocolspecification[ITU-TRecommendationQ.931(1993),modified]SIST EN 300 403-1 V1.3.2:2005



ETSIETSIEN300403-1V1.3.2(1999-11)2ReferenceREN/SPS-05210-1(3qc90j1c.PDF)Keywordsbasic,DSS1,ISDN,layer3,protocol,UNIETSIPostaladdressF-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 300 403-1 V1.3.2:2005



ETSIETSIEN300403-1V1.3.2(1999-11)3IntellectualPropertyRightsIPRsessentialorpotentiallyessentialtothepresentdocumentmayhavebeendeclaredtoETSI.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).Thepresentdocumentispart1ofamulti-partENcoveringtheIntegratedServicesDigitalNetwork(ISDN);DigitalSubscriberSignallingSystemNo.one(DSS1)protocol;Signallingnetworklayerforcircuit-modebasiccallcontrol,asidentifiedbelow:Part1:"Protocolspecification[ITU-TRecommendationQ.931(1993),modified]";Part2:"SpecificationandDescriptionLanguage(SDL)diagrams";Part3:"ProtocolImplementationConformanceStatement(PICS)proformaspecification";Part4:"TestSuiteStructureandTestPurposes(TSS&TP)specificationfortheuser";Part5:"AbstractTestSuite(ATS)andpartialProtocolImplementationeXtraInformationforTesting(PIXIT)proformaspecificationfortheuser";Part6:"TestSuiteStructureandTestPurposes(TSS&TP)specificationforthenetwork";Part7:"AbstractTestSuite(ATS)andpartialProtocolImplementationeXtraInformationforTesting(PIXIT)proformaspecificationforthenetwork".ThepresentdocumentwhichisbaseduponITU-TRecommendationQ.931(1993)isanextendedandupdatedversionofETS300403-1(1995)andETS300102-1(1990).AnnexZAidentifiesrelevantdifferencesbetweenthepresentdocumentandthesestandards.NationaltranspositiondatesDateofadoptionofthisEN:12November1999DateoflatestannouncementofthisEN(doa):29February2000DateoflatestpublicationofnewNationalStandardorendorsementofthisEN(dop/e):31August2000DateofwithdrawalofanyconflictingNationalStandard(dow):31August2000EndorsementnoticeTheelementsofITU-TRecommendationQ.931(1993)apply,withthefollowingmodifications:NOTE:Underliningand/orstrikeoutareusedtohighlightdetailedmodificationswherenecessary.SIST EN 300 403-1 V1.3.2:2005



ETSIETSIEN300403-1V1.3.2(1999-11)4Page1,clause1Deleteclause1(General)andsubclause1.1(ScopeoftheRecommendation).Insertthefollowingthreeclauses(Scope,References,Definitions)atthestartofthetext:ScopeThepresentdocumentspecifiesthestagethreeofcircuit-modeon-demandbasictelecommunicationservicesforthepan-EuropeanIntegratedServicesDigitalNetwork(ISDN)asprovidedbyEuropeantelecommunicationsoperatorsattheTreferencepointorcoincidentSandTreferencepoint(asdefinedinITU-TRecommendationI.411[95]bymeansoftheDigitalSubscriberSignallingSystemNo.one(DSS1).Stagethreeidentifiestheprotocolproceduresandswitchingfunctionsneededtosupportatelecommunicationservice(seeCCITTRecommendationI.130[92]).Inaddition,thepresentdocumentspecifiestheprotocolrequirementsattheTreferencepointwheretheserviceisprovidedtotheuserviaaprivateISDN.NOTE1:ProceduresattheTreferencepoint,tosupporttheaccessofaprivateISDNtothepublicISDNarenotexplicitlyidentifiedinthepresentdocument,howeversomeproceduresareapplicableonlytotheTreferencepoint.ThepresentdocumentdoesnotspecifytheadditionalprotocolrequirementswheretheserviceisprovidedtotheuserviaatelecommunicationnetworkthatisnotanISDN.Abasictelecommunicationserviceisafundamentaltypeofservice.Itformsthebasisonwhichsupplementaryservicesmaybeadded.NOTE2:Specificrequirementsofindividualcircuit-modebasictelecommunicationservicesarenotcoveredinthepresentdocument.However,ETR018/EG201018givesguidanceontheuseofservicespecificinformationelementstoimplementindividualbasictelecommunicationservices.FurtherpartsofthepresentdocumentspecifytheSpecificationandDescriptionLanguage(SDL)diagrams,themethodoftesting,anddetailedapplicationspecificrequirementstodetermineconformancebasedonthepresentdocument.Thepresentdocumentisapplicabletoequipmentsupportingcircuit-modeon-demandbasictelecommunicationservices,tobeattachedateithersideofaTreferencepointorcoincidentSandTreferencepointwhenusedasanaccesstothepublicISDN.ReferencesThefollowingdocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthepresentdocument.•Referencesareeitherspecific(identifiedbydateofpublication,editionnumber,versionnumber,etc.)ornon-specific.•Foraspecificreference,subsequentrevisionsdonotapply.•Foranon-specificreference,thelatestversionapplies.•Anon-specificreferencetoanETSshallalsobetakentorefertolaterversionspublishedasanENwiththesamenumber.[87]ITU-TRecommendationH.245(1998):"Controlprotocolformultimediacommunication".[88]ITU-TRecommendationF.711(1993):"AudiographicconferenceteleserviceforISDN".[89]ITU-TRecommendationF.720(1992):"Videotelephonyservices-General".[90]ITU-TRecommendationH.223(1996):"Multiplexingprotocolforlowbitratemultimediacommunication".SIST EN 300 403-1 V1.3.2:2005



ETSIETSIEN300403-1V1.3.2(1999-11)5[91]ITU-TRecommendationI.112(1993):"VocabularyoftermsforISDNs".[92]CCITTRecommendationI.130(1988):"MethodforcharacterizationoftelecommunicationservicessupportedbyanISDNandnetworkcapabilitiesofanISDN".[93]ITU-RecommendationI.140(1993):"AttributetechniqueforthecharacterizationoftelecommunicationservicessupportedbyanISDNandnetworkcapabilitiesofanISDN".[94]ITU-TRecommendationI.210(1993):"PrinciplesoftelecommunicationservicessupportedbyanISDNandthemeansusedtodescribethem".[95]ITU-TRecommendationI.411(1993):"ISDNuser-networkinterfaces-Referenceconfigurations".[96]CCITTRecommendationQ.9(1988):"Vocabularyofswitchingandsignallingterms".[97]ITU-TRecommendationV.34(1994):"Amodemoperatingatdatasignallingratesofupto28800bit/sforuseonthegeneralswitchedtelephonenetworkandonleasedpoint-to-point2-wiretelephone-typecircuits".[98]ETS300007:"IntegratedServicesDigitalNetwork(ISDN);Supportofpacket-modeterminalequipmentbyanISDN".[99]ETS300011:"IntegratedServicesDigitalNetwork(ISDN);Primaryrateuser-networkinterface;Layer1specificationandtestprinciples".[100]ETS300012:"IntegratedServicesDigitalNetwork(ISDN);Basicuser-networkinterface;Layer1specificationandtestprinciples".[101]ETS300058-1:"IntegratedServicesDigitalNetwork(ISDN);CallWaiting(CW)supplementaryservice;DigitalSubscriberSignallingSystemNo.one(DSS1)protocol;Part1:Protocolspecification".[102]ETS300092-1:"IntegratedServicesDigitalNetwork(ISDN);CallingLineIdentificationPresentation(CLIP)supplementaryservice;DigitalSubscriberSignallingSystemNo.one(DSS1)protocol;Part1:Protocolspecification".[103]ETS300093-1:"IntegratedServicesDigitalNetwork(ISDN);CallingLineIdentificationRestriction(CLIR)supplementaryservice;DigitalSubscriberSignallingSystemNo.one(DSS1)protocol;Part1:Protocolspecification".[104]ETS300122-1:"IntegratedServicesDigitalNetwork(ISDN);Generickeypadprotocolforthesupportofsupplementaryservices;DigitalSubscriberSignallingSystemNo.one(DSS1)protocol;Part1:Protocolspecification".[105]EN300196-1(V1.2):"IntegratedServicesDigitalNetwork(ISDN);Genericfunctionalprotocolforthesupportofsupplementaryservices;DigitalSubscriberSignallingSystemNo.one(DSS1)protocol;Part1:Protocolspecification".[106]ETS300207-1:"IntegratedServicesDigitalNetwork(ISDN);Diversionsupplementaryservices;DigitalSubscriberSignallingSystemNo.one(DSS1)protocol;Part1:Protocolspecification".[107]ETS300286-1:"IntegratedServicesDigitalNetwork(ISDN);User-to-UserSignalling(UUS)supplementaryservice;DigitalSubscriberSignallingSystemNo.one(DSS1)protocol;Part1:Protocolspecification".[108]ETS300383:"IntegratedServicesDigitalNetwork(ISDN);FiletransferovertheISDN;EUROFILEtransferprofile".[109]ETS300388:"IntegratedServicesDigitalNetwork(ISDN);FileTransferAccess&Management(FTAM)overISDNbasedonsimplefiletransferprofile".[110]ETS300402-1:"IntegratedServicesDigitalNetwork(ISDN);DigitalSubscriberSignallingSystemNo.one(DSS1)protocol;Datalinklayer;Part1:Generalaspects[ITU-TRecommendationQ.920(1993),modified]".SIST EN 300 403-1 V1.3.2:2005



ETSIETSIEN300403-1V1.3.2(1999-11)6[111]ETS300402-2:"IntegratedServicesDigitalNetwork(ISDN);DigitalSubscriberSignallingSystemNo.one(DSS1)protocol;Datalinklayer;Part2:Generalprotocolspecification[ITU-TRecommendationQ.921(1993),modified]".[112]ETS300403-2:"IntegratedServicesDigitalNetwork(ISDN);DigitalSubscriberSignallingSystemNo.one(DSS1)protocol;Signallingnetworklayerforcircuit-modebasiccallcontrol;Part2:SpecificationandDescriptionLanguage(SDL)diagrams".[113]ETS300485:"IntegratedServicesDigitalNetwork(ISDN);DefinitionandusageofcauseandlocationinDigitalSubscriberSignallingSystemNo.one(DSS1)andSignallingSystemNo.7ISDNUserPart(ISUP)[ITU-TRecommendationQ.850(1993),modified]".NOTE:ThereferenceslistedinthepresentdocumentareacontinuationofpublicationsreferencedinITU-TRecommendationQ.931.DefinitionsForthepurposesofthepresentdocument,thefollowingdefinitionsapply,togetherwiththosegiveninthereferencedpublications:accesschannel;channel:seeCCITTRecommendationQ.9[96],definition0008B-channel:64kbit/schannelaccompaniedbytimingintendedtocarryawidevarietyofuserinformationstreams.AB-channeldoesnotcarrysignallinginformationforcircuitswitchingbytheISDNbasicaccess:seeCCITTRecommendationQ.9[96],definition1551basicservice;basictelecommunicationservice:seeCCITTRecommendationQ.9[96],definition7018call:seeCCITTRecommendationQ.9[96],definition2201callcontrolmessage:messageasdefinedinsubclause3.1ofthepresentdocument,whichonsendingorreceiptcausesachangeofthecallstateateitherthenetworkortheuser;andalsoPROGRESSandINFORMATIONmessagescallestablishment;connectionestablishment:seeCCITTRecommendationQ.9[96],definition2207callreference:identifierofasignallingtransaction.Thesignallingtransactionmayeitherbebearerrelated,inwhichcasethesignallingtransactioncanbeusedtocontrolthatbearer,orbearerindependent,inwhichcasethereisnobearerassociatedwiththatsignallingtransaction.Allsignallingtransactionsinthepresentdocumentarebearerrelatedexceptthoseassociatedwiththeglobalcallreference.Wherethereisonlyonebearerrequiredforacall,thenthecallreferenceoftheassociatedbearerrelatedsignallingtransactionmightbeusedtoidentifythecall.Inthepresentdocument,thereisonlyonebearerforeachcallcallstate:stateasdefinedinsubclause2.1ofthepresentdocument,foreithertheusersideornetworksideasappropriate.Acallstatemayexistforeachcallreferencevalue(andatthenetworksideforeachadditionalrespondingCEIintheincomingcallstates)circuitswitched;circuitswitching:seeCCITTRecommendationQ.9[96],definition1125comprehensionrequired:requirementthatthecodingstructureandmeaningofaninformationelementshallbeunderstoodbyitsreceiverforthemessagetobeprocessed.Aspecificrangeofvaluesforinformationelementidentifiersisprovidedforthoseinformationelementsforwhichcomprehensionisrequiredconnection:seeCCITTRecommendationQ.9[96],definition0011.Inthepresentdocument,thetermistakentoincludeabeareranditsassociatedcontrolsignallingD-channel:channelprimarilyintendedtocarrysignallinginformationforcircuitswitchingbytheISDNdatalinkconnectionendpointidentifier:identifierusedbyalayer3protocolentitytoaddressitspeerentitydummycallreference:callreferencevalueofoneoctetlengthencodedas"00000000"enblocreceiving:procedure,usedincallestablishmentofanincomingcall,toenablethenetworktosendcalledpartynumberdigitstotheuserinasinglemessageSIST EN 300 403-1 V1.3.2:2005



ETSIETSIEN300403-1V1.3.2(1999-11)7enblocsending:procedure,usedincallestablishmentofanoutgoingcall,toenabletheusertosendcalledpartynumberdigitstothenetworkinasinglemessageglobalcallreference:Callreferenceinformationelementwithacallreferencevalueofzero.Thelengthofthecallreferencevalueisencodedinthefirstoctetoftheinformationelement.TheGlobalcallreferenceidentifiesallcallreferencescurrentlyassociatedwiththeappropriatedatalinkconnectionendpointidentifierIncoming(call):callincomingtotheusersideoftheinterfaceIntegratedServicesDigitalNetwork(ISDN):seeITU-TRecommendationI.112[91],definition308interface:seeCCITTRecommendationQ.9[96],definition4001NetworkServiceAccessPoint(NSAP)address;OSINSAPaddress:seeCCITTRecommendationQ.9[96],definition2083network:DSS1protocolentityatthenetworksideoftheuser-networkinterfaceondemand:seeITU-TRecommendationI.140[93],annexA,clauseA.2OpenSystemInterconnection(OSI):conceptofinterconnectingsystemsinaccordancewiththearchitecturedescribedintheOpenSystemInterconnectionReferencemodel(CCITTRecommendationX.200[78])outgoing(call):calloutgoingfromtheusersideoftheinterfaceoverlapreceiving:procedure,usedincallestablishmentofanincomingcall,toenablethenetworktosendcalledpartynumberdigitstotheuserinsuccessivemessages,asandwhentheyaremadeavailablefromtheremotenetworkoverlapsending:procedure,usedincallestablishmentofanoutgoingcall,toenabletheusertosendcalledpartynumberdigitstothenetworkinsuccessivemessages,asandwhentheyaremadeavailablebytheuserpoint-to-multipointconfiguration;multipointterminalconfiguration;multipointconfiguration:terminalconfigurationinwhichthereismorethanonesignallingentitypoint-to-multipointdatalink;broadcastdatalink:datalinkconnectionwiththecapabilityofsupportingmorethantwoconnectionendpointspoint-to-pointconfiguration;single-pointterminalconfiguration;single-pointconfiguration:terminalconfigurationinwhichthereisonesignallingentitypoint-to-pointdatalink:datalinkonwhichaframeisdirectedtoasingleendpointprimaryrateaccess:seeCCITTRecommendationQ.9[96],definition1552service;telecommunicationservice:seeITU-TRecommendationI.112[91],definition201supplementaryservice:seeITU-TRecommendationI.210[94],subclause2.4user:DSS1protocolentityattheusersideoftheuser-networkinterfaceSIST EN 300 403-1 V1.3.2:2005



ETSIETSIEN300403-1V1.3.2(1999-11)8ThroughoutthetextofITU-TRecommendationQ.931Replacereferencesthroughoutthetextasshownbelow.ReferenceinITU-TRecommendationQ.931ModifiedreferenceITU-TRecommendationI.430[46]ETS300012[100]ITU-TRecommendationI.431[27]ETS300011[99]ITU-TRecommendationQ.850[67]ETS300485[113]ITU-TRecommendationQ.920[45]ITU-TRecommendationQ.920asmodifiedbyETS300402-1[110]ITU-TRecommendationQ.921[3]ITU-TRecommendationQ.921asmodifiedbyETS300402-2[111]ITU-TRecommendationQ.931ITU-TRecommendationQ.931asmodifiedbythepresentdocumentITU-TRecommendationQ.951[85],clause3ETS300092-1[102]ITU-TRecommendationQ.951[85],clause4ETS300093-1[103]ITU-TRecommendationQ.952[86]ETS300207-1[106]ITU-TRecommendationQ.953[84],clause1ETS300058-1[101]ITU-TRecommendationQ.957[54],clause1ETS300286-1[107]Pages1and2,clause2Replacethesecondparagraphby:Inthesubclauseswhichfollow,statesaredefinedforcircuitswitchedcallsinsubclause2.1(callstates)andfortheinterfaceinsubclause2.4(globalcallreferencestates).Replacethethreelastparagraphsby:Adetaileddescriptionoftheproceduresforcallcontrolisgiveninclause5intermsof:a)themessagesdefinedinclause3whicharetransferredacrosstheuser-networkinterface;b)theinformationprocessingandactionsthattakeplaceattheusersideandthenetworkside.DetailedSDLdiagramsforcallcontrolofcircuitswitchedcallsarecontainedinETS300403-2[112].Page2,subclause2.1,lastparagraphDeletethelastparagraphreferringtoannexD.Pages4to6,subclause2.2Deletesubclause2.2andallofitssubclauses.Thebasicpacket-modeaccessconnectioncontrolstatesforaccesstotheISDNvirtualbearerservicearedefinedinETS300007[98]andareoutsidethescopeofthepresentdocument.Pages6to8,subclause2.3Deletesubclause2.3andallofitssubclauses.Temporarysignallingconnectionsareoutsidethescopeofthepresentdocument.Page8,subclause2.4,lastparagraphReplacethelastparagraphby:Theglobalcallreferenceshallbehandledindependentlyforincomingandoutgoingsides,i.e.twoindependentstatemachinesinanentityshallbereferencedbytheglobalcallreference.SIST EN 300 403-1 V1.3.2:2005



ETSIETSIEN300403-1V1.3.2(1999-11)9Page8,subclause2.4.1.1,subclauseheadingReplacethesubclauseheadingbythefollowing:2.4.1.1RestartNull(Rest0)Page9,subclause2.4.2.1,subclauseheadingReplacethesubclauseheadingbythefollowing:2.4.2.1RestartNull(Rest0)Page9,clause3,note1Deletethelastsentence"AnnexD.interfaces".Page10,table3-1/Q.931IncludeSEGMENTasamessageintheMiscellaneousmessagespartoftable3-1/Q.931withareferencetosubclause3.5.1.Page11,table3-2/Q.931Modifytable3-2/Q.931asfollows:Messagetype:ALERTINGSignificance:globalDirection:bothInformationelementReferenceDirectionTypeLengthProtocoldiscriminator4.2bothM1Callreference4.3bothM2-3Messagetype4.4bothM1Bearercapability4.5bothO(note1)4-12Channelidentification4.5both(note2)u→nO(note3)2-34Progressindicator4.5bothO(note4)2-4Display4.5n→uO(note5)2-82(note6)Signal4.5n→uO(note7)2-3Highlayercompatibility4.5bothO(note8)2-5NOTE1:TheBearercapabilityinformationelementisincludedwhentheproceduresofsubclause5.11forbearercapabilityselectionapply.Whenpresent,progressdescription#5"interworkinghasoccurredandhasresultedinatelecommunicationservicechange"shallalsobepresent.NOTE2:Includedinthenetwork-to-userdirectionforsupportoftheproceduresinannexD.Void.NOTE3:MandatoryifthismessageisthefirstmessageinresponsetoSETUP,unlesstheuseracceptstheB-channelindicatedintheSETUPmessage.NOTE4:Includedintheeventofinterworking.Includedinthenetwork-to-userdirectioninconnectionwiththeprovisionofin-bandinformation/patterns.Includedintheuser-to-networkdirectioninconnectionwiththeprovisionofin-bandinformation/patternsifannexKisimplementedorinaccordancewiththeproceduresofsubclause5.11.3andsubclause5.12.3.NOTE5:Includedifthenetworkprovidesinformationthatcanbepresentedtotheuser.NOTE6:Theminimumlengthis2octets;themaximumlengthisnetworkdependentandiseither34or82octets.NOTE7:Includedifthenetworkoptionallyprovidesinformationdescribingtonesoralertingsignals.Void.NOTE8:TheHighlayercompatibilityinformationelementisincludedwhentheproceduresofsubclause5.12forhighlayercompatibilityselectionapply.Whenpresent,progressdescription#5,"interworkinghasoccurredandhasresultedinatelecommunicationservicechange",shallalsobepresent.SIST EN 300 403-1 V1.3.2:2005



ETSIETSIEN300403-1V1.3.2(1999-11)10Page12,table3-3/Q.931Modifytable3-3/Q.931asfollows:Messagetype:CALLPROCEEDINGSignificance:localDirection:bothInformationelementReferenceDirectionTypeLengthProtocoldiscriminator4.2bothM1Callreference4.3bothM2-3Messagetype4.4bothM1Bearercapability4.5bothO(note5)4-12Channelidentification4.5bothO(note1)2-34Progressindicator4.5bothO(note2)2-4Display4.5n→uO(note3)2-82(note4)Highlayercompatibility4.5bothO(note6)2-5NOTE1:Mandatoryinthenetwork-to-userdirectionifthismessageisthefirstmessageinresponsetoSETUP.Mandatoryintheuser-to-networkdirectionifthismessageisthefirstmessageinresponsetoSETUP,unlesstheuseracceptstheB-channelindicatedintheSETUPmessage.NOTE2:Includedintheeventofinterworking.Includedinthenetwork-to-userdirectioninconnectionwiththeprovisionofin-bandinformation/patterns.Includedintheuser-to-networkdirectioninconnectionwiththeprovisionofin-bandinformation/patternsifannexKisimplementedorinaccordancewiththeproceduresofsubclause5.11.3andsubclause5.12.3.NOTE3:Includedifthenetworkprovidesinformationthatcanbepresentedtotheuser.NOTE4:Theminimumlengthis2octets;themaximumlengthisnetworkdependentandiseither34or82octets.NOTE5:TheBearercapabilityinformationelementisincludedwhentheproceduresofsubclause5.11forbearercapabilityselectionapply.Whenpresent,progressdescription#5"interworkinghasoccurredandhasresultedinatelecommunicationservicechange",shallalsobepresent.NOTE6:TheHighlayercompatibilityinformationelementisincludedwhentheproceduresofsubclause5.12forhighlayercompatibilityselectionapply.Whenpresent,progressdescription#5,"interworkinghasoccurredandhasresultedinatelecommunicationservicechange",shallalsobepresent.SIST EN 300 403-1 V1.3.2:2005



ETSIETSIEN300403-1V1.3.2(1999-11)11Page13,table3-4/Q.931Modifytable3-4/Q.931asfollows:Messagetype:CONNECTSignificance:globalDirection:bothInformationelementReferenceDirectionTypeLengthProtocoldiscriminator4.2bothM1Callreference4.3bothM2-3Messagetype4.4bothM1Bearercapability4.5bothO(note1)4-12Channelidentification4.5both(note2)u→nO(note3)2-34Progressindicator4.5bothO(note4)2-4Display4.5n→uO(note5)2-82(note6)Date/time4.6n→uO(note7)2-8Signal4.5n→uO(note8)2-3Lowlayercompatibility4.5bothO(note9)2-18Highlayercompatibility4.5bothO(note10)2-5NOTE1:TheBearercapabilityinformationelementisincludedwhentheproceduresofsubclause5.11forbearercapabilityselectionapply.NOTE2:Includedinthenetwork-to-userdirectionforsupportoftheproceduresinannexD.Void.NOTE3:MandatoryifthismessageisthefirstmessageinresponsetoSETUP,unlesstheuseracceptstheB-channelindicatedintheSETUPmessage.NOTE4:Includedintheeventofinterworkingorinconnectionwiththeprovisionofin-bandinformation/patterns.NOTE5:Includedifthenetworkprovidesinformationthatcanbepresentedtotheuser.NOTE6:Theminimumlengthis2octets;themaximumlengthisnetworkdependentandiseither34or82octets.NOTE7:Asanetworkoption,maybeincludedtoprovidedateandtimeinformationtothecallinguserforallcallsorforcallsinvolvingspecifictelecommunicationservices.NOTE8:Includedifthenetworkoptionallyprovidesinformationdescribingtones.Void.NOTE9:Includedintheuser-to-networkdirectionwhentheansweringuserwantstoreturnlowlayercompatibilityinformationtothecallinguser.Includedinthenetwork-to-userdirectioniftheuserawardedthecallincludedaLowlayercompatibilityinformationelementintheCONNECTmessage.Optionallyincludedforlowlayercompatibilitynegotiation,butsomenetworksmaynottransportthisinformationelementtothecallinguser(seeannexJ).NOTE10:TheHighlayercompatibilityinformationelementisincludedwhentheproceduresofsubclause5.12forhighlayercompatibilityselectionapply.Page14,table3-5/Q.931Modifytable3-5/Q.931asfollows:Messagetype:CONNECTACKNOWLEDGESignificance:localDirection:bothInformationelementReferenceDirectionTypeLengthProtocoldiscriminator4.2bothM1Callreference4.3bothM2-3Messagetype4.4bothM1Display4.5n→uO(note1)2-82(note2)Signal4.5n→uO(note3)2-3NOTE1:Includedifthenetworkprovidesinformationthatcanbepresentedtotheuser.NOTE2:Theminimumlengthis2octets;themaximumlengthisnetworkdependentandiseither34or82octets.NOTE3:Includedifthenetworkoptionallyprovidesadditionalinformationdescribingtones.Void.SIST EN 300 403-1 V1.3.2:2005



ETSIETSIEN300403-1V1.3.2(1999-11)12Page15,table3-6/Q.931Modifytable3-6/Q.931asfollows:Messagetype:DISCONNECTSignificance:globalDirection:bothInformationelementReferenceDirectionTypeLengthProtocoldiscriminator4.2bothM1Callreference4.3bothM2-3Messagetype4.4bothM1Cause4.5bothM4-32Progressindicator4.5(note1)n→uO(note2)2-4Display4.5n→uO(note3)2-82(note4)Signal4.5n→uO(note5)2-3NOTE1:Includedinthenetwork-to-userdirectionifthenetworkprovidesin-bandtones.SeeannexDforusageintheuser-to-networkdirection.NOTE2:Includedbythenetworkifin-bandtonesareprovided.However,theusermayincludetheProgressIndicatorandprovidein-bandtones(seeannexD).Insuchcasesthenetworkwillignorethisinformationelementandwillnotconveythein-bandtones.NOTE3:Includedifthenetworkprovidesinformationthatcanbepresentedtotheuser.NOTE4:Theminimumlengthis2octets;themaximumlengthisnetworkdependentandiseither34or82octets.NOTE5:Includedifthenetworkoptionallyprovidesadditionalinformationdescribingtones.Void.SIST EN 300 403-1 V1.3.2:2005



ETSIETSIEN300403-1V1.3.2(1999-11)13Page16,table3-7/Q.931Modifytable3-7/Q.931asfollows:Messagetype:INFORMATIONSignificance:local(note1)Direction:bothInformationelementReferenceDirectionTypeLengthProtocoldiscriminator4.2bothM1Callreference4.3bothM2-3(note2)Messagetype4.4bothM1Sendingcomplete4.5bothO(note3)1Cause4.5n→uO(note9)2-32Display4.5n→uO(note4)2-82(note5)Keypadfacility4.5u→n(note10)O(note6)2-34Signal4.5n→uO(note7)2-3Calledpartynumber4.5u→nbothO(note8)2-23NOTE1:Thismessagehaslocalsignificance,butmaycarryinformationofglobalsignificance.NOTE2:Thismessagemaybesetwiththedummycallreferencedefinedin§4.3whenfeaturekeymanagementproceduresareused(seeRecommendationQ.932);otherwisetheminimumlengthin2octets.Void.NOTE3:Includediftheuseroptionallyindicatescompletionofoverlapsendingtothenetwork,orifthenetworkoptionallyindicatescompletionofoverlapreceivingtotheuser.NOTE4:Includedifthenetworkprovidesinformationthatcanbepresentedtotheuser.NOTE5:Theminimumlengthis2octets;themaximumlengthisnetworkdependentandiseither34or82octets.NOTE6:EithertheCalledpartynumberortheKeypadfacilityinformationelementisincludedbytheusertoconveycalledpartynumberinformationtothenetworkduringoverlapsending.TheKeypadfacilityinformationelementmayalsobeincludediftheuserwantstoconveyothercallestablishmentinformationtothenetworkortoconveysupplementaryserviceinformation(seeclause7).NOTE7:Includedifthenetworkoptionallyprovidesadditionalinformationdescribingtones.Void.NOTE8:EitherTheCalledpartynumberortheKeypadfacilityinformationelementisincludedbytheusertoconveycalledpartynumberinformationtothenetworkduringoverlapsending.TheCalledpartynumberinformationelementisincludedbythenetworktotransfercalledpartynumberinformationtotheuserduringoverlapreceiving.NOTE9:Asanetworkoption,maybeusedforstimulusoperationofsupplementaryservices.NOTE10:TheuseoftheKeypadfacilityinformationelementinthenetworktouserdirectionistoconveysupplementaryserviceinformationaspartofkeypadprotocolisanetworkoption.(Thisoptionismaintainedduetobackwardscompatibilityandisnotrecommendedforfutureuse.)Page17,table3-8/Q.931Modifytable3-8/Q.931asfollows:Messagetype:NOTIFYSignificance:accessDirection:bothInformationelementReferenceDirectionTypeLengthProtocoldiscriminator4.2bothM1Callreference4.3bothM2-3Messagetype4.4bothM1Bearercapability4.5n→uO(note1)2-12Notificationindicator4.5bothM3Display4.5n→uO(note2)2-82(note3)NOTE1:Includedbythenetworktoindicateachangeinbearercapability(seeannexL).Void.NOTE2:Includedifthenetworkprovidesinformationthatcanbepresentedtotheuser.NOTE3:Theminimumlengthis2octets;themaximumlengthisnetworkdependentandiseither34or82octets.SIST EN 300 403-1 V1.3.2:2005



ETSIETSIEN300403-1V1.3.2(1999-11)14Page18,table3-9/Q.931Modifytable3-9/Q.931asfollows:Messagetype:PROGRESSSignificance:globalDirection:bothInformationelementReferenceDirectionTypeLengthProtocoldiscriminator4.2bothM1Callreference4.3bothM2-3Messagetype4.4bothM1Bearercapability4.5bothO(note1)2-12Cause4.5bothO(note2)2-32Progressindicator4.5bothM4Display4.5n→uO(note3)2-82(note4)Highlayercompatibility4.5bothO(note5)2-5NOTE1:TheBearercapabilityinformationelementisincludedwhentheproceduresofsubclause5.11forbearercapabilityselectionapply.TheBearercapabilityinformationelementindicatesthebearerservicenowbeingusedforthecall.NOTE2:Includedbytheuserorthenetworktoprovideadditionalinformationconcerningtheprovisionofin-bandinformation/patterns.NOTE3:Includedifthenetworkprovidesinformationthatcanbepresentedtotheuser.NOTE4:Theminimumlengthis2octets;themaximumlengthisnetworkdependentandiseither34or82octets.NOTE5:TheHighlayercompatibilityinformationelementisincludedwhentheoptionalproceduresofsubclause5.12forhighlayercompatibilityselectionapply.TheHighlayercompatibilityinformationelementindicatesthehighlayercompatibilitynowbeingusedforthecall.Page19,table3-10/Q.931Modifytable3-10/Q.931asfollows:Messagetype:RELEASESignificance:local(note1)Direction:bothInformationelementReferenceDirectionTypeLengthProtocoldiscriminator4.2bothM1Callreference4.3bothM2-3Messagetype4.4bothM1Cause4.5bothO(note2)2-32Display4.5n→uO(note3)2-82(note4)Signal4.5n→uO(note5)2-3NOTE1:Thismessagehasalocalsignificance;however,itmaycarryinformationofglobalsignificancewhenusedasthefirstcallclearingmessage.NOTE2:Mandatoryinthefirstcallclearingmessage,includingwhentheRELEASEmessageissentasaresultofanerrorhandlingcondition.NOTE3:Includedifthenetworkprovidesinformationthatcanbepresentedtotheuser.NOTE4:Theminimumlengthis2octets;themaximumlengthisnetworkdependentandiseither34or82octets.NOTE5:Includedifthenetworkoptionallyprovidesadditionalinformationdescribingtones.Void.SIST EN 300 403-1 V1.3.2:2005



ETSIETSIEN300403-1V1.3.2(1999-11)15Page20,table3-11/Q.931Modifytable3-11/Q.931asfollows:Messagetype:RELEASECOMPLETESignificance:local(note1)Direction:bothInformationelementReferenceDirectionTypeLengthProtocoldiscriminator4.2bothM1Callreference4.3bothM2-3Messagetype4.4bothM1Cause4.5bothO(note2)2
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