SIST EN 300 403-2 V1.3.1:2005

• Abstract:

  To correct the errors detected and introduced the solution agreed during the Brighton meeting (TD202).

• Status: Published
• Publication Date: 31-Dec-2004
• 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-Jan-2005
• Due Date: 01-Jan-2005
• Completion Date: 01-Jan-2005
• Mandate: T-234B
• Ref Project: ETSI EN 300 403-2 V1.3.1 (2000-11) - Integrated Services Digital Network (ISDN); Digital Subscriber Signalling System No. one (DSS1) protocol; Signalling network layer for circuit-mode basic call control; Part 2: Specification and Description Language (SDL) diagrams

Overview

SIST EN 300 403-2 V1.3.1:2005 is a European standard developed by the Slovenski inštitut za standardizacijo (SIST), harmonized with ETSI specifications. This standard details the use of the Specification and Description Language (SDL) diagrams for the Digital Subscriber Signalling System No. one (DSS1) protocol, focusing on the signalling network layer for circuit-mode basic call control in Integrated Services Digital Networks (ISDN). Its primary goal is to provide a graphical and structured representation of protocol procedures, essential for designing, implementing, and verifying ISDN signalling systems.

The standard corrects previously identified errors and reflects updates agreed on during international expert meetings. It forms the second part of a multi-part standard, closely aligning with ITU-T Recommendations and serving as a key resource for ISDN protocol development throughout Europe.

Key Topics

• SDL (Specification and Description Language) Diagrams: The document uses SDL as per ITU-T Recommendation Z.100 to model and describe the DSS1 protocol behavior, enabling clear communication of process interactions and state transitions.
• Call Control Procedures: Comprehensive presentation of network and user side call states, transitions, and relevant primitive exchanges involved in establishing, maintaining, and terminating circuit-mode basic calls.
• Point-to-Point and Point-to-Multipoint Configurations: Special attention given to global and individual processes in point-to-multipoint scenarios, allowing support for configurations involving multiple signalling endpoints.
• Restart Procedures: Explicit representation of states and information exchanges required to manage protocol restarts, crucial for maintaining service integrity and ensuring robust ISDN operation.
• Error Correction and Updates: The standard reflects solutions to previously documented issues, ensuring continuity and reliability in ISDN network layer implementations.

Applications

Implementing SIST EN 300 403-2 V1.3.1:2005 offers practical value in multiple areas:

• Telecommunications Equipment Development: Equipment vendors use SDL diagrams to accurately implement and test ISDN call control functions according to harmonized European requirements.
• Protocol Conformance Testing: Test houses and quality assurance teams utilize the standard’s detailed diagrams for building conformance test suites and validating protocol implementations.
• Network Planning and Integration: Network operators apply these specifications for integrating multi-vendor ISDN equipment, ensuring interoperability at the signalling protocol's network layer.
• Technical Training & Education: The SDL diagrams provide an educational resource for engineers and students learning about ISDN signalling and protocol design.
• Private and Public ISDN Deployments: Companies setting up private branch exchanges (PBXs) or connecting to public ISDN services benefit from adhering to a common standard, supporting reliable service delivery and troubleshooting.

Related Standards

To ensure full coverage of ISDN DSS1 protocol implementation and testing, the following standards and recommendations are closely related to SIST EN 300 403-2 V1.3.1:2005:

• ETS 300 403-1: Protocol specification for the DSS1 network layer (referenced throughout for textual definitions).
• ETS 300 102-2: User-network interface specifications and SDL diagrams for basic call control.
• ITU-T Recommendation Q.931: Defines the ISDN user-network interface layer 3 specification for basic call control.
• ITU-T Recommendation I.411: Details ISDN user-network interfaces - reference configurations.
• ITU-T Recommendation Z.100: Specification and Description Language (SDL) guidelines.
• ETSI ETR 018: Offers guidance on ISDN service-specific information elements.
• Other Parts of EN 300 403: Include protocol implementation conformance statements (PICS), test purposes (TSS&TP), and abstract test suites (ATS) for both user and network sides.

Keywords: ISDN, DSS1, SDL diagrams, digital subscriber signalling, signalling network layer, circuit-mode call control, protocol specification, telecommunications standard, protocol testing, European standards, network integration.

Adhering to SIST EN 300 403-2 ensures reliable, interoperable, and standards-compliant ISDN network deployments, supporting innovation and stability in digital communications.

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Integrated Services Digital Network (ISDN); Digital Subscriber Signalling System No. one (DSS1) protocol; Signalling network layer for circuit-mode basic call control; Part 2: Specification and Description Language (SDL) diagrams35.100.30Omrežni slojNetwork layer33.080Digitalno omrežje z integriranimi storitvami (ISDN)Integrated Services Digital Network (ISDN)ICS:Ta slovenski standard je istoveten z:EN 300 403-2 Version 1.3.1SIST EN 300 403-2 V1.3.1:2005en01-januar-2005SIST EN 300 403-2 V1.3.1:2005SLOVENSKI
STANDARD
ETSIEN300403-2V1.3.1(2000-11)EuropeanStandard(Telecommunicationsseries)IntegratedServicesDigitalNetwork(ISDN);DigitalSubscriberSignallingSystemNo.one(DSS1)protocol;Signallingnetworklayerforcircuit-modebasiccallcontrol;Part2:SpecificationandDescriptionLanguage(SDL)diagramsSIST EN 300 403-2 V1.3.1:2005

ETSIETSIEN300403-2V1.3.1(2000-11)2ReferenceREN/SPAN-05210-2KeywordsISDN,DSS1,layer3,SDLETSI650RoutedesLuciolesF-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 300 403-2 V1.3.1:2005

ETSIETSIEN300403-2V1.3.1(2000-11)3ContentsIntellectualPropertyRights.4Foreword.41Scope.52References.53Definitions,symbolsandabbreviations.63.1Definitions.63.2Symbols.73.3Abbreviations.74Usersideandnetworksidecallstates.85NetworksideSDLdiagrams-overview.95.1Callstates.95.2Blockdiagram.95.3Listofprimitives.105.4Representationmethod.106UsersideSDLdiagrams-overview.136.1Callstates.136.2Blockdiagram.136.3Listofprimitives.146.4Representationmethod.147RestartSDLdiagrams-overview.147.1Statesrelatedtotherestartprocedure.147.2Blockdiagram.157.3Listofprimitivesexchangedwithsystemmanagement.157.4Representationmethod.158GraphicalSDLdiagrams.168.1NetworksideSDLdiagrams.178.2UsersideSDLdiagrams.1028.3RestartSDLdiagrams.158AnnexA(informative):RelevantdifferencestoETS300102-2.166A.1Structuralchanges.166A.2Technicalchanges.167History.168SIST EN 300 403-2 V1.3.1:2005

ETSIETSIEN300403-2V1.3.1(2000-11)4IntellectualPropertyRightsIPRsessentialorpotentiallyessentialtothepresentdocumentmayhavebeendeclaredtoETSI.TheinformationpertainingtotheseessentialIPRs,ifany,ispubliclyavailableforETSImembersandnon-members,andcanbefoundinETSISR000314:"IntellectualPropertyRights(IPRs);Essential,orpotentiallyEssential,IPRsnotifiedtoETSIinrespectofETSIstandards",whichisavailablefromtheETSISecretariat.LatestupdatesareavailableontheETSIWebserver(http://www.etsi.org/ipr).PursuanttotheETSIIPRPolicy,noinvestigation,includingIPRsearches,hasbeencarriedoutbyETSI.NoguaranteecanbegivenastotheexistenceofotherIPRsnotreferencedinETSISR000314(ortheupdatesontheETSIWebserver)whichare,ormaybe,ormaybecome,essentialtothepresentdocument.ForewordThisEuropeanStandard(Telecommunicationsseries)hasbeenproducedbyETSITechnicalCommitteeServicesandProtocolsforAdvancedNetworks(SPAN).ThepresentdocumentwhichisbasedonITU-TRecommendationQ.931(1993)[7]isanextendedandupdatedversionofETS300102-2(1990)whichwasbasedonITU-TRecommendationQ.931(1988).AnnexAidentifiestherelevantdifferencesbetweenthepresentdocumentandETS300102-2.Thepresentdocumentispart2ofamulti-partstandardcoveringtheDigitalSubscriberSignallingSystemNo.one(DSS1)protocolspecificationfortheIntegratedServicesDigitalNetwork(ISDN)signallingnetworklayerforcircuit-modebasiccallcontrol,asdescribedbelow: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".NationaltranspositiondatesDateofadoptionofthisEN:27October2000DateoflatestannouncementofthisEN(doa):31January2001DateoflatestpublicationofnewNationalStandardorendorsementofthisEN(dop/e):31July2001DateofwithdrawalofanyconflictingNationalStandard(dow):31July2001SIST EN 300 403-2 V1.3.1:2005

ETSIETSIEN300403-2V1.3.1(2000-11)51ScopeThepresentdocumentspecifiesthestagethreeofcircuit-modeon-demandbasictelecommunicationservicesforthepan-EuropeanIntegratedServicesDigitalNetwork(ISDN)asprovidedbyEuropeantelecommunicationsoperatorsattheTreferencepointorcoincidentSandTreferencepoint(asdefinedinITU-TRecommendationI.411[3])bymeansoftheDigitalSubscriberSignallingSystemNo.one(DSS1).Stagethreeidentifiestheprotocolproceduresandswitchingfunctionsneededtosupportatelecommunicationservice(seeITU-TRecommendationI.130[2]).Inaddition,thepresentdocumentspecifiestheprotocolrequirementsattheTreferencepointwheretheserviceisprovidedtotheuserviaaprivateISDN.NOTE1:ProceduresattheTreferencepoint,tosupporttheaccessofaprivateISDNtothepublicISDN,arenotexplicitlyidentifiedinthepresentdocument,howeversomeproceduresareapplicableonlytotheTreferencepoint.ThepresentdocumentdoesnotspecifytheadditionalprotocolrequirementswheretheserviceisprovidedtotheuserviaatelecommunicationnetworkthatisnotanISDN.ThepresentdocumentisspecifiedusingtheSpecificationandDescriptionLanguage(SDL)asspecifiedinITU-TRecommendationZ.100[4].Inordertodescribethepoint-to-multipointoperationoftheprotocol,theconceptofa"global"processrunninginparallelwithanumberof"individual"(dynamic)processeshasbeenintroduced.Thisapproach,andtheassociateddefinitionofinternalprimitivesisintendedtoprovideacoherentdescriptionoftheprotocolanddoesnotconstrainimplementations.TheSDLdiagramsinthispart,andthetextofclause5ofETS300403-1[1],togetherprovideacompletespecificationoftheprotocolwithinthescopeofthepresentdocument.Abasictelecommunicationserviceisafundamentaltypeofservice.Itformsthebasisonwhichsupplementaryservicesmaybeadded.NOTE2:Specificrequirementsofindividualcircuit-modebasictelecommunicationservicesarenotcoveredinthepresentdocument.However,ETR018[5]givesguidanceontheuseofservicespecificinformationelementstoimplementindividualbasictelecommunicationservices.ThemethodoftestingofthepresentdocumentiscommonwiththatforETS300403-1[1].Furtherpartsofthepresentdocumentspecifythemethodoftestinganddetailedapplicationspecificrequirementstodetermineconformancebasedonthepresentdocument.Thepresentdocumentisapplicabletoequipmentsupportingcircuit-modeon-demandbasictelecommunicationservices,tobeattachedateithersideofaTreferencepointorcoincidentSandTreferencepointwhenusedasanaccesstothepublicISDN.2ReferencesThefollowingdocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthepresentdocument.• Referencesareeitherspecific(identifiedbydateofpublication,editionnumber,versionnumber,etc.)ornon-specific.• Foraspecificreference,subsequentrevisionsdonotapply.• Foranon-specificreference,thelatestversionapplies.• Anon-specificreferencetoanETSshallalsobetakentorefertolaterversionspublishedasanENwiththesamenumber.[1]ETSIETS300403-1(1995):"IntegratedServicesDigitalNetwork(ISDN);DigitalSubscriberSignallingSystemNo.one(DSS1)protocol;Signallingnetworklayerforcircuit-modebasiccallcontrol;Part1:Protocolspecification[ITU-TRecommendationQ.931(1993),modified]".SIST EN 300 403-2 V1.3.1:2005

ETSIETSIEN300403-2V1.3.1(2000-11)6[2]ITU-TRecommendationI.130(1988):"MethodforthecharacterizationoftelecommunicationservicessupportedbyanISDNandnetworkcapabilitiesofanISDN".[3]ITU-TRecommendationI.411(1993):"ISDNuser-networkinterfaces-Referenceconfigurations".[4]ITU-TRecommendationZ.100(1988):"Specificationanddescriptionlanguage(SDL)".[5]ETSIETR018:"IntegratedServicesDigitalNetwork(ISDN);ApplicationoftheBearerCapability(BC),HighLayerCompatibility(HLC)andLowLayerCompatibility(LLC)informationelementsbyterminalssupportingISDNservices".[6]ETSIETS300102-2:"IntegratedServicesDigitalNetwork(ISDN);User-networkinterfacelayer3;Specificationsforbasiccallcontrol;SpecificationDescriptionLanguage(SDL)diagrams".[7]ITU-TRecommendationQ.931:"ISDNuser-networkinterfacelayer3specificationforbasiccallcontrol".3Definitions,symbolsandabbreviations3.1DefinitionsForthepurposesofthepresentdocument,thefollowingtermsanddefinitionsapplyinadditiontothosegiveninETS300403-1[1]:point-to-multipointconfiguration;multipointterminalconfiguration;multipointconfiguration:terminalconfigurationinwhichthereismorethanonesignallingentitypoint-to-multipointdatalink;broadcastdatalink:datalinkconnectionwiththecapabilitytosupportmorethantwoconnectionendpointspoint-to-pointconfiguration;single-pointterminalconfiguration;single-pointconfiguration:terminalconfigurationinwhichthereisonesignallingentitypoint-to-pointdatalink:datalinkonwhichaframeisdirectedtoasingleendpointSIST EN 300 403-2 V1.3.1:2005

ETSIETSIEN300403-2V1.3.1(2000-11)73.2SymbolsForthepurposesofthepresentdocument,thefollowingsymbolsapply.AfulldescriptionofthesymbolsandtheirmeaningandapplicationisgiveninITU-TRecommendationZ.100[4].StatesymbolInputsymbol(eventoccurrence)Outputsymbol(signalgenerationwhichwillleadtoanassociatedeventoccurrence)Savesymbol(saveeventuntilcompletionofatransition)TasksymbolDecisionsymbolProcedurecallsymbolTransitionoptionsymbol(implementationoption)ProcedurestartsymbolProcedurereturnsymbolCreaterequestsymbol(usedtoinitiateanindividualnetworksidetransaction)Stopsymbol(usedtoendanindividualnetworksidetransaction)ConnectionsymbolUsedmark(aninputwhichislocaltothelayer3entityandwhichisrequiredasaresultoftherepresentationapproachadopted)3.3AbbreviationsForthepurposesofthepresentdocument,thefollowingabbreviationsapply:CESConnectionEndpointSuffixDSS1DigitalSubscriberSignallingSystemNo.oneISDNIntegratedServicesDigitalNetworkSDLSpecificationandDescriptionLanguageSIST EN 300 403-2 V1.3.1:2005

ETSIETSIEN300403-2V1.3.1(2000-11)84UsersideandnetworksidecallstatesTable1showswhichcallstatesareapplicableattheuserandnetworksidesduringthevariousphasesofacall.Table1:CallstatesCallphaseCallstateUserNetworkIDLENullU0N0OUTGOINGCALL(fromuser)CallinitiatedOverlapsendingOutgoingcallproceedingCalldeliveredU1U2U3U4N1N2N3N4INCOMINGCALL(touser)CallpresentOverlapreceivingIncomingcallproceedingCallreceivedConnectrequestU6U25U9U7U8N6N25N9N7N8ACTIVEActiveU10N10CALLCLEARINGDisconnectrequest(clearingbytheuser)Disconnectindication(clearingbythenetwork)ReleaserequestCallabortU11U12U19-N11N12N19N22CALLSUSPEND/RESUMESuspendrequestResumerequestU15U17N15N17RESTARTPROCEDURE(note)RestartnullRestartrequestRestartREST0REST1REST2REST0REST1REST2NOTE:Thesestatesrelatetoglobalcallreferencesandareapplicablewhentherestartproceduresareused.Theymayexistinbothuserandnetworksides.SIST EN 300 403-2 V1.3.1:2005

ETSIETSIEN300403-2V1.3.1(2000-11)95NetworksideSDLdiagrams-overview5.1CallstatesTable2:NetworksidecallstatesCallstateNameN0NullN1CallinitiatedN2OverlapsendingN3OutgoingcallproceedingN4CalldeliveredN6CallpresentN7CallreceivedN8ConnectrequestN9IncomingcallproceedingN10ActiveN11DisconnectrequestN12DisconnectindicationN15SuspendrequestN17ResumerequestN19ReleaserequestN22CallabortN25OverlapreceivingNOTE1:Networksidetimers,andthestatesinwhichtheyrun,arespecifiedinclause9ofETS300403-1[1].NOTE2:Eventsineachstatewhichleadtonormalcallestablishmentandclearingaremarkedwiththe"+"symbol.NOTE3:Theprimitiveswhichpasstoandfromthecallcontrolblockareshownforguidanceonlyandarenotfullyspecified.NOTE4:Internalprimitivesaremarkedby"*".Thesearearesultoftherepresentationmethodthathasbeenadopted.5.2BlockdiagramCallcontrolResourcemanagementProcedurecallQ.931protocolcontrolMessagesto/fromUsersideDatalinklayerPhysicallayerUser-networkinterfaceUserBlockdescribedbytheSDLdiagramsPrimitives(note1)NOTE1:InterfacenotdescribedintheSDLdiagrams.NOTE2:ControlofB-channelsisdescribedintheseSDLdiagramsaspartoftheQ.931protocolblock.Figure1:BlockdiagramforthenetworksideSIST EN 300 403-2 V1.3.1:2005

ETSIETSIEN300403-2V1.3.1(2000-11)105.3ListofprimitivesTable3:ListofprimitivesFromcallcontrolblockTocallcontrolblockALERTINGREQUESTDISCONNECTREQUESTINFOREQUESTMOREINFOREQUESTNOTIFYREQUESTPROCEEDINGREQUESTPROGRESSREQUESTREJECTREQUESTRELEASEREQUESTRESUMEREJECTREQUESTRESUMERESPONSESETUPCOMPLETEREQUESTSETUPREQUESTSETUPRESPONSESTATUSENQUIRYREQUESTSUSPENDREJECTREQUESTSUSPENDRESPONSERESTARTREQUEST(note1)ALERTINGINDICATIONCONNECTINDICATIONDISCONNECTINDICATIONINFOINDICATIONMOREINFOINDICATIONNOTIFYINDICATIONPROCEEDINGINDICATIONPROGRESSINDICATIONRELEASECONFIRMRELEASEINDICATIONRESUMEINDICATIONSETUPCONFIRMSETUPINDICATIONSTATUSINDICATIONSUSPENDINDICATIONTIMEOUTINDICATIONRESTARTCONFIRM(note2)NOTE1:Thisprimitivemaybereceivedfromglobalcallreferencecontrol.NOTE2:Thisprimitiveissenttoglobalcallreferencecontrol.5.4RepresentationmethodInordertodescribethepoint-to-multipointoperationoftheprotocol,theconceptofa"global"processrunninginparallelwithanumberof"individual"(dynamic)processesinthenetworksidehasbeenintroduced.Thisapproach,andtheassociateddefinitionofinternalprimitives,isintendedtoprovideacoherentdescriptionoftheprotocolanddoesnotconstrainimplementation.Thetextualdescriptioninclause5ofETS300403-1[1]isdefinitive.Individualprocessesareusedtotracktheresponsesofeachterminal.Theglobal(controlling)processrunsinparallelwiththe(dynamicallycreated/destroyed)individualprocess.Theglobalandindividualprocessescommunicatebymeansofinternalprimitives.Thesearerelatedtolayer3messagestypesandaredefinedintable4.Theinternalprimitivesrepresentinstantaneousactions.Thus,thereisnopossibilityoferrorscausedbythecrossoverofprimitives.TheglobalprocessmaintainsalistofrecordedConnectionEndpointSuffix(CES)valuestoenableittomanagetheindividualprocesses.Inthisrepresentationtheglobalprocessalsokeepsarecordofthestateoftheindividualprocessassociatedwitheachrespondingterminal.Additionallya"preselected"CESisrecordedwhenoneterminalrespondswithaCONNECTmessageandthisbecomesthe"selected"CESwhentheterminalisawardedthecall.Thissolutioniscompatiblewithpoint-to-pointconfigurations.Inthiscasetheglobalprocessnevercreatesanyindividualprocesses,andthetimersdefinedinETS300403-1[1]fortherelevantstatesarehandledbytheglobalprocess,includingtimerT322whichmayruninanystateexcepttheNullstate.Also,eversinceatransitiontotheNullstateoccurs,thestoppingofthistimer(ifrunning)shouldberegardedasanimplicitstatement,asitisnotshowninordernottoextendtheSDLrepresentation.Inapoint-to-multipointconfiguration,individualprocessesmayexistinthefollowingstates:N0Null(processesarecreatedinthisstate);N7Callreceived;N8Connectrequest;N9Incomingcallproceeding;N19Releaserequest;N25Overlapreceiving.SIST EN 300 403-2 V1.3.1:2005

ETSIETSIEN300403-2V1.3.1(2000-11)11TwosetsofSDLdiagramsarerequiredforthesestatestoshowtheglobalandindividualprocesses.Theglobalprocesshandlesallcommunicationswithcallcontrol.Messagesfromindividualsterminalsaresenttotheindividualprocessforthatterminalifoneexists(i.e.iftheCESisrecognized).MessageswithanunrecognizedCESarepassedtotheglobalprocess.MessageswiththeselectedCESarealsosenttotheglobalprocess.Inapoint-to-multipointconfiguration,thehandlingofthetimersdefinedinETS300403-1[1]hasbeendoneaccordingtothefollowingprinciples:a)timersT301andT310onlyrunintheglobalprocesswhenanincomingcallisbeingoffered;b)timersT304,T308andT322onlyrunintheindividualprocesseswhenanincomingcallisbeingoffered.ThestoppingoftimerT322(ifrunning)whenanindividualprocessisdestroyedshouldberegardedasanimplicitstatementasitisnotshowninordernottoextendtheSDLrepresentation;c)intheotherphasesofacall,thetimersassociatedwitheachstate,aswellastimerT322whichmayruninanystateexcepttheNullstate,areallhandledbytheglobalprocess.Onceagain,thestoppingofthistimer(ifrunning)shouldberegardedasanimplicitstatementbecauseitextendstheSDLrepresentation.Table4:Networksidelayer3internalprimitivesPrimitivenameFromToMeaningINT.ALERTINGREQINT.CONNECTREQINT.CALLPROCREQINT.SETUPACKREQGlobalIndividualWhenglobalprocessreceivesALERTINGitstartsanindividualprocessandsendsINT.ALERTINGREQtoit(etc.)INT.ALERTINGINDINT.CONNECTINDINT.CALLPROCINDIndividualGlobalSentonreceiptofALERTING(etc.)ENDPROCESSGlobalIndividualSentwhentheglobalprocessterminatesanindividualprocessINT.RELEASEREQGlobalIndividualInstructsindividualprocesstoreleaseterminal(e.g.forreleasingnon-selectedterminals)INT.RELEASEINDIndividualGlobalInformsglobalprocessthataterminalhasbeguntoreleaseINT.INFOREQGlobalIndividualSentonreceiptofINFOREQINT.INFOINDIndividualGlobalSentonreceiptofINFOINT.STAT.ENQ.REQGlobalIndividualSentonreceiptofSTATUSENQUIRYREQINT.PROGRESSINDIndividualGlobalSentonreceiptofPROGRESSINT.REL.COMP.INDIndividualGlobalSenttoindicatethattheindividualprocesshasbeenclearedNOTE:Theglobalprocessshouldnotreleasethecallreferenceuntilallindividualprocesseshavecompletedclearing.Figure2(anarrowdiagram)showsanexampleofthisrepresentationmethod.SIST EN 300 403-2 V1.3.1:2005

ETSIETSIEN300403-2V1.3.1(2000-11)12Terminal1Terminal2Terminal3NetworkSETUP(BROADCAST)0SETUPREQALERTINGT303ALERTINGINDINT.ALERTINGREQ7iALERTINGALERTINGINT.ALERTINGREQ7iINT.ALERTINGREQ7iINT.CONNECTINDCONNECTENDPROCESS8iRELEASEINT.RELEASEREQRELEASERELEASECOMPLETEINT.RELEASEREQ19iT3086T312CONNECTIND10T312expires(nostatechange)19iT308INT.REL.COMP.INDRELEASECOMPLETEINT.REL.COMP.INDCONNECTACKCONNECTACKREQ7Figure2:Multipointcallestablishment(andclearingofnon-selectedterminals)8NOTE:o=creationofstatemachine,x=deletionofstatemachine;numbersindicatestatesofthestatemachinesshown.xxxoooSIST EN 300 403-2 V1.3.1:2005

ETSIETSIEN300403-2V1.3.1(2000-11)136UsersideSDLdiagrams-overview6.1CallstatesTable5:UsersidecallstatesCallstateNameU0NullU1CallinitiatedU2OverlapsendingU3OutgoingcallproceedingU4CalldeliveredU6CallpresentU7CallreceivedU8ConnectrequestU9IncomingcallproceedingU10ActiveU11DisconnectrequestU12DisconnectindicationU15SuspendrequestU17ResumerequestU19ReleaserequestU25OverlapreceivingNOTE1:Usersidetimers,andthestatesinwhichtheyrun,arespecifiedinclause9ofETS300403-1[1].NOTE2:Eventsineachstatewhichleadtonormalcallestablishment/clearingareshownbythe"+"symbol.NOTE3:Primitivespassedtoandfromthecallcontrol(userapplication)blockareshownforguidanceonlyandarenotfullyspecified.6.2BlockdiagramCallcontrolResourcemanagementProcedurecallQ.931protocolcontrolMessagesto/fromUsersideDatalinklayerPhysicallayerUser-networkinterfaceNetworkBlockdescribedbytheSDLdiagramsPrimitives(note1)NOTE1:InterfacenotdescribedintheSDLdiagrams.NOTE2:ControlofB-channelsisdescribedintheseSDLdiagramsaspartoftheQ.931protocolblock.Figure3:BlockdiagramfortheusersideSIST EN 300 403-2 V1.3.1:2005

ETSIETSIEN300403-2V1.3.1(2000-11)146.3ListofprimitivesTable6:ListofprimitivesFromcallcontrolblockTocallcontrolblockALERTINGREQUESTDISCONNECTREQUESTINFOREQUESTMOREINFOREQUESTNOTIFYREQUESTPROCEEDINGREQUESTPROGRESSREQUESTREJECTREQUESTRELEASEREQUESTRESUMEREQUEST(note1)SETUPREQUESTSETUPRESPONSESTATUSENQUIRYREQUESTSUSPENDREQUEST(note1)RESTARTREQUEST(note2)ALERTINGINDICATIONDISCONNECTINDICATIONINFOINDICATIONMOREINFOINDICATIONNOTIFYINDICATIONPROCEEDINGINDICATIONPROGRESSINDICATIONRELEASECONFIRMRELEASEINDICATIONRESUMECONFIRMSETUPCOMPLETEINDICATIONSETUPCONFIRMSETUPINDICATIONSTATUSINDICATIONSUSPENDCONFIRMRESTARTCONFIRM(note3)NOTE1:Theseprimitivesarenotdefinedforaprimaryrateaccess,i.e.theuseofthecallrearrangementprocedureisrestrictedtobasicaccess.NOTE2:Thisprimitivemaybereceivedfromglobalcallreferencecontrol.NOTE3:Thisprimitiveissenttoglobalcallreferencecontrol.6.4RepresentationmethodTherepresentationmethodofusersideSDLdiagramshasnotfollowedtheconceptofaglobalprocessrunninginparallelwithanumberofindividualprocesses,becausefromasignallingpointofviewonlyonecallishandledbytheglobalprocessateachtime.Therefore,theglobalprocessnevercreatesanyindividualprocesses,andonlyonesetofSDLdiagramsisrequiredtorepresenttheusersidecallstates.Asaconsequence,thetimersassociatedwitheachstate,aswellastimerT322whichmayruninanystateexcepttheNullstate,areallhandledbytheglobalprocess.Also,asmentionedforthenetworkside,thestoppingofthistimer(ifrunning)shouldberegardedasanimplicitstatementbecauseitextendstheSDLrepresentation.7RestartSDLdiagrams-overview7.1StatesrelatedtotherestartprocedureTable7:StatesrelatedtotherestartprocedureCallstateNameREST0RestartnullREST1RestartrequestREST2RestartNOTE1:Timersrelatedtotherestartprocedure,andthestatesinwhichtheyrun,arespecifiedinclause9ofETS300403-1[1].NOTE2:Theprimitiveswhichpasstoandfromthesystemmanagementblock(seetable8)andtheprotocolcontrolblock(seetables3and6)areshownforguidanceonlyandarenotfullyspecified.SIST EN 300 403-2 V1.3.1:2005

ETSIETSIEN300403-2V1.3.1(2000-11)157.2BlockdiagramCallcontrolResourcemanagementProcedurecallQ.931protocolcontrolDatalinklayerPhysicallayerUser/NetworkBlockdescribedbytheSDLdiagramsGlobalcallreferencecontrol(note)NOTE:InterfacenotdescribedintheSDLdiagrams.Figure4:Blockdiagramfortherestartprocedure7.3ListofprimitivesexchangedwithsystemmanagementTable8:ListofprimitivesFromsystemmanagementblockTosystemmanagementblockMANAGEMENTRESTARTREQUESTTIMEOUTMANAGEMENTINDICATIONSTATUSMANAGEMENTINDICATIONMANAGEMENTRESTARTCONFIRMNOTE:Primitivesrelatedtotherestartprocedurewhichmaybesentorreceivedto/fromprotocolcontrolblockarealreadyindicatedintables3and6.7.4RepresentationmethodTherepresentationmethodoftherestartSDLdiagramsfollowstheconceptofasinglefinitestatemachinerunningintheglobalcallreferencecontrolblock(seefigure4),inordertodescribetherestartprocedureandtheassociatedstatesdefinedinETS300403-1[1]subclause5.5andsubclause2.4,respectively.Wheneveracollisionofrestartproceduresinitiatedbyeithersideoftheinterfacemayoccur,itshallbehandledbyaseparatefinitestatemachineapproach.NOTE:Duetothecomplexityoftherepresentation,thisapproachisnotpresented.SIST EN 300 403-2 V1.3.1:2005

ETSIETSIEN300403-2V1.3.1(2000-11)16Inthissubsetofdiagrams,referenceismadetosomeflagsinordertomaketheSDLrepresentationmoretransparent.Theflagshavethefollowingmeaning:a)RESTRESP:eitherbyinitiativeofthemanagemententityorbecauseaRESTARTmessagehasbeenreceived,theglobalcallreferencecontrolentityhassentprimitivesRESTARTREQUESTtoeachprotocolentityassociatedwithanactivecallreference,andiswaitingforareplyfromthem.Theflagissetwhentheyallhaveresponded;b)RESTACK:byinitiativeofthemanagemententity,theglobalcallreferenceentityhassentaRESTARTmessagetoitspeerentity(inthenetworksideorintheuserside),andiswaitingforaRESTARTACKNOWLEDGE.Theflagissetwhenthismessageisreceived;c)T317EXPIRED:eitherbyinitiativeofthemanagemententityorbecauseaRESTARTmessagehasbeenreceived,theglobalcallreferencecontrolentityhassentprimitivesRESTARTREQUESTtoeachprotocolentityassociatedwithanactivecallreference,andiswaitingforareplyfromthem.Theflagissetiftheyhavenotrespondedinduetime,andtimerT317hasexpired.8GraphicalSDLdiagramsThisclauseisseparatedintothreesubclauses:-networksideSDLdiagrams(figure5,sheets1to85);-usersideSDLdiagrams(figure6,sheets1to57);-restartSDLdiagrams(figure7,sheets1to7).AllreferencesinthefollowingdiagramsaretoETS300403-1[1].SIST EN 300 403-2 V1.3.1:2005

ETSIETSIEN300403-2V1.3.1(2000-11)178.1NetworksideSDLdiagramsProcess NETWORK_SIDE1(85)NETWORK SIDE SDL DIAGRAMSNOTE 1. THE EXPIRY OF TIMER T307 IS NOT SHOWN IN THESE SDLs AS IT RUNS IN THE CALL CONTROL BLOCK.0NULLRELEASE5.8.3.2 (b)ESTABLISHCRRELEASECOMPLETE(CAUSE #81)RELEASECR0RESUMEACCESS?ESTABLISHCRRELEASECOMPLETE(CAUSE #81)RELEASECR0ESTABLISHCRRELEASE(CAUSE #81)STARTT30819ESTABLISHCRRESUMEINDICATION175.65.6.45.6.5+SETUP5.1.15.1.2+ESTABLISHCRCHNLSELECTIONSUCCESS?RELEASECOMPLETE(CAUSE #34 OR #44)RELEASECR0SETUPINDICATION1PRABRANYFigure5(sheet1of85):NetworksideSDLdiagramSIST EN 300 403-2 V1.3.1:2005

ETSIETSIEN300403-2V1.3.1(2000-11)18Process NETWORK_SIDE2(85)NETWORK SIDE SDL DIAGRAMSNOTE 1. ANY OTHER MESSAGE EXCEPT STATUS ENQUIRY, SEE PAGES DEALING WITH DIAGRAMS RELATED TO ANY GLOBAL OR INDIVIDUAL STATE.NOTE 2. CAUSE #101 IS RETURNED IF A STATUS MESSAGE IS RECEIVED, WHILE CAUSE #81 APPLIES FOR OTHER MESSAGES.0NULLRELEASECOMPLETE5.8.3.2 (c)0OTHERMESSAGEESTABLISHCRRELEASECOMPLETE(CAUSE #81 OR #101)NOTE 2RELEASECR0ESTABLISHCRRELEASE(CAUSE #81 OR #101)NOTE 2STARTT308195.8.3.2 (a),NOTE 1STATUS5.8.11CS=0?0NYFigure5(sheet2of85):NetworksideSDLdiagramSIST EN 300 403-2 V1.3.1:2005

ETSIETSIEN300403-2V1.3.1(2000-11)19Process NETWORK_SIDE3(85)NETWORK SIDE SDL DIAGRAMSNOTE 1. THIS INPUT MAY BE RECEIVED FROM A TERMINAL COMPLETING CLEARING IN A POINT-TO-MULTIPOINT CONFIGURATION.
THE CALL REFERENCE SHOULD NOT BE RE-USED UNTILL ALL TERMINALS HAVE COMPLETED CLEARING.0NULLINT
*REL COMPINDICATION(CES)DELETECES0NOTE 1NOTIFYREQUEST0SETUPREQUEST5.2.1+CHNLSELECTIONSUCCESS?RELEASEINDICATION0SELECTCRSTARTT303P-PSETUPREQUEST?STARTT312SETUP(B/CAST)6SETUP(P-P)6NYNYFigure5(sheet3of85):NetworksideSDLdiagramSIST EN 300 403-2 V1.3.1:2005

ETSIETSIEN300403-2V1.3.1(2000-11)20Process NETWORK_SIDE4(85)NETWORK SIDE SDL DIAGRAMSNOTE 1. INDIVIDUAL PROCESSES ARE CREATED IN THIS STATE.OINULLINT
*ALERTINGREQUEST7IINT
*RELEASEREQUEST(CAUSE)STARTT308RELEASE(CAUSE)19IINT
*CALL PROCREQUEST9IINT
*CONNECTREQUEST8IINT
*SETUP ACKREQUESTSTARTT30425IINDIVIDUAL PROCESS,NOTE 1Figure5(sheet4of85):NetworksideSDLdiagramSIST EN 300 403-2 V1.3.1:2005

ETSIETSIEN300403-2V1.3.1(2000-11)21Process NETWORK_SIDE5(85)NETWORK SIDE SDL DIAGRAMS1CALLINITIATEDREJECTREQUEST(CAUSE)RELEASECOMPLETE(CAUSE)RELEASEB-CHANNEL IFNOT RELEASEDRELEASECR05.3.2 (a)PROCEEDINGREQUESTCALLPROCEEDING(B-CHNL)CONNECTB-CHNL35.1.5.1+MORE INFOREQUEST5.1.3+STARTT302SETUP ACK(B-CHNL)CONNECTB-CHNLANYDIGITSRECEIVED?2TONEOPTION?2CONNECTDIALTONEYNNYFigure5(sheet5of85):NetworksideSDLdiagramSIST EN 300 403-2 V1.3.1:2005

ETSIETSIEN300403-2V1.3.1(2000-11)22Process NETWORK_SIDE6(85)NETWORK SIDE SDL DIAGRAMS1CALLINITIATEDRELEASECOMPLETERELEASEB-CHANNEL IFNOT RELEASEDRELEASEINDICATIONRELEASECR05.8.4RELEASERELEASEB-CHANNEL IFNOT RELEASEDRELEASEINDICATIONRELEASECOMPLETERELEASECR05.8.4DISCONNECTDISCONNECTB-CHANNEL IFNOT DISCONNECTEDDISCONNECTINDICATION115.3.3Figure5(sheet6of85):NetworksideSDLdiagramSIST EN 300 403-2 V1.3.1:2005

ETSIETSIEN300403-2V1.3.1(2000-11)23Process NETWORK_SIDE7(85)NETWORK SIDE SDL DIAGRAMS2OVERLAPSENDINGPROCEEDINGREQUESTSTOPT302CALLPROCEEDING35.1.5.2+ALERTINGREQUESTSTOPT302ALERTING45.1.7+SETUPRESPONSE5.1.8+STOPT302CONNECT10Figure5(sheet7of85):NetworksideSDLdiagramSIST EN 300 403-2 V1.3.1:2005

ETSIETSIEN300403-2V1.3.1(2000-11)24Process NETWORK_SIDE8(85)NETWORK SIDE SDL DIAGRAMS2OVERLAPSENDINGINFOREQUESTINFO25PROGRESSREQUEST5.1.6PROGRESS2DISCONNECTREQUEST(CAUSE)STOPT302TONEOPTION?DISCONNECT(PI, CAUSE)STARTTONESTARTT30612DISCONNECTB-CHANNEL IFNOT DISCONNECTEDDISCONNECT(CAUSE)STARTT3055.1.5.25.3.4YNFigure5(sheet8of85):NetworksideSDLdiagramSIST EN 300 403-2 V1.3.1:2005

ETSIETSIEN300403-2V1.3.1(2000-11)25Process NETWORK_SIDE9(85)NETWORK SIDE SDL DIAGRAMS2OVERLAPSENDINGRELEASECOMPLETESTOPT302RELEASEB-CHANNEL IFNOT RELEASEDRELEASEINDICATIONRELEASECR05.8.4RELEASESTOPT302RELEASEINDICATIONRELEASEB-CHANNEL IFNOT RELEASEDRELEASECOMPLETERELEASECR05.8.4DISCONNECTSTOPT302DISCONNECTB-CHANNEL IFNOT DISCONNECTEDDISCONNECTINDICATION115.3.3Figure5(sheet9of85):NetworksideSDLdiagramSIST EN 300 403-2 V1.3.1:2005

ETSIETSIEN300403-2V1.3.1(2000-11)26Process NETWORK_SIDE10(85)NETWORK SIDE SDL DIAGRAMS2OVERLAPSENDINGTIMEOUTT302CALL INFOINCOMPLETE?RELEASEINDICATIONTONEOPTION?DISCONNECT(PI, CAUSE #28)STARTTONESTARTT30612RELEASEB-CHANNEL IFNOT RELEASEDDISCONNECT(CAUSE #28)STARTT305TIMEOUTINDICATIONCALLPROCEEDING35.1.5.2INFO5.1.3+STOPT302FIRSTINFOMESSAGE?INFOINDICATIONSTARTT3022STOP ANYAPPLIEDDIAL TONEYYNNNYFigure5(sheet10of85):NetworksideSDLdiagramSIST EN 300 403-2 V1.3.1:2005

ETSIETSIEN300403-2V1.3.1(2000-11)27Process NETWORK_SIDE11(85)NETWORK SIDE SDL DIAGRAMS3OUTGOING CALLPROCEEDINGDISCONNECTREQUEST(CAUSE)TONEOPTION?DISCONNECT(PI, CAUSE)STARTTONESTARTT30612DISCONNECTB-CHANNEL IFNOT DISCONNECTEDDISCONNECT(CAUSE)STARTT3055.1.5.15.3.4SETUPRESPONSECONNECT105.1.8+ALERTINGREQUESTALERTING45.1.7+YNFigure5(sheet11of85):NetworksideSDLdiagramSIST EN 300 403-2 V1.3.1:2005

ETSIETSIEN300403-2V1.3.1(2000-11)28Process NETWORK_SIDE12(85)NETWORK SIDE SDL DIAGRAMS3OUTGOING CALLPROCEEDINGINFO5INFOINDICATION3INFOREQUESTINFO35PROGRESSREQUESTPROGRESS35.1.6Figure5(sheet12of85):NetworksideSDLdiagramSIST EN 300 403-2 V1.3.1:2005

ETSIETSIEN300403-2V1.3.1(2000-11)29Process NETWORK_SIDE13(85)NETWORK SIDE SDL DIAGRAMS3OUTGOING CALLPROCEEDINGRELEASERELEASEB-CHANNEL IFNOT RELEASEDRELEASEINDICATIONRELEASECOMPLETERELEASECR05.8.4DISCONNECTDISCONNECTB-CHANNEL IFNOT DISCONNECTEDDISCONNECTINDICATION115.3.3RELEASECOMPLETERELEASEB-CHANNEL IFNOT RELEASEDRELEASEINDICATIONRELEASECR05.8.4Figure5(sheet13of85):NetworksideSDLdiagramSIST EN 300 403-2 V1.3.1:2005

ETSIETSIEN300403-2V1.3.1(2000-11)30Process NETWORK_SIDE14(85)NETWORK SIDE SDL DIAGRAMS4CALLDELIVEREDDISCONNECTREQUEST(CAUSE)TONEOPTION?DISCONNECT(PI, CAUSE)STARTTONESTARTT30612DISCONNECTB-CHANNEL IFNOT DISCONNECTEDDISCONNECT(CAUSE)STARTT3055.3.4SETUPRESPONSECONNECT105.1.8+PROGRESSREQUESTPROGRESS45.1.6YNFigure5(sheet14of85):NetworksideSDLdiagramSIST EN 300 403-2 V1.3.1:2005

ETSIETSIEN300403-2V1.3.1(2000-11)31Process NETWORK_SIDE15(85)NETWORK SIDE SDL DIAGRAMS4CALLDELIVEREDINFOINFOINDICATION45INFOREQUESTINFO45Figure5(sheet15of85):NetworksideSDLdiagramSIST EN 300 403-2 V1.3.1:2005

ETSIETSIEN300403-2V1.3.1(2000-11)32Process NETWORK_SIDE16(85)NETWORK SIDE SDL DIAGRAMS4CALLDELIVEREDDISCONNECTDISCONNECTB-CHANNEL IFNOT DISCONNECTEDDISCONNECTINDICATION115.3.3RELEASECOMPLETERELEASEB-CHANNEL IFNOT RELEASEDRELEASEINDICATIONRELEASECR05.8.4RELEASERELEASEB-CHANNEL IFNOT RELEASEDRELEASEINDICATIONRELEASECOMPLETERELEASECR05.8.4Figure5(sheet16of85):NetworksideSDLdiagramSIST EN 300 403-2 V1.3.1:2005

ETSIETSIEN300403-2V1.3.1(2000-11)33Process NETWORK_SIDE17(85)NETWORK SIDE SDL DIAGRAMS6CALLPRESENTSETUP ACK5.2.35.2.45.3.2+WASSETUPB/CAST?CHNLOK?STOPT303MORE INFOINDICATIONSTARTT30425STOPT303RELEASE(CAUSE #6)RELEASEINDICATIONSTARTT30819CHNLOK?STOPT303MORE INFOINDICATIONCREATEPROCESS(CES)INT
*SETUP ACKREQUEST(CES)25CREATEPROCESS(CES)INT
*RELEASEREQUEST(CES, CAUSE #6)6NYNYYNFigure5(sheet17of85):NetworksideSDLdiagramSIST EN 300 403-2 V1.3.1:2005

ETSIETSIEN300403-2V1.3.1(2000-11)34Process NETWORK_SIDE18(85)NETWORK SIDE SDL DIAGRAMSNOTE 1. TIMER T301 IS NOT USED IF THE NETWORK IMPLEMENTS ANOTHER INTERNAL ALERTING SUPERVISION TIMING FUNCTION.6CALLPRESENTALERTING5.2.35.2.5.25.3.2+WASSETUPB/CAST?CHNLOK?STOPT303RELEASE(CAUSE #6)RELEASEINDICATIONSTARTT30819STOPT303ALERTINGINDICATIONSTARTT301NOTE 17CHNLOK?STOPT303ALERTINGINDICATIONCREATEPROCESS(CES)INT
*ALERTINGREQUEST(CES)STARTT301NOTE 17CREATEPROCESS(CES)INT
*RELEASEREQUEST(CES, CAUSE #6)6NNYYYNFigure5(sheet18of85):NetworksideSDLdiagramSIST EN 300 403-2 V1.3.1:2005

ETSIETSIEN300403-2V1.3.1(2000-11)35Process NETWORK_SIDE19(85)NETWORK SIDE SDL DIAGRAMS6CALLPRESENTCONNECTWASSETUPB/CAST?CHNLOK ?STOPT303SETUPCONFIRMPRESELECTCESCREATEPROCESS(CES)INT
*CONNECTREQUEST(CES)8CREATEPROCESS(CES)INT
*RELEASEREQUEST(CES, CAUSE #6)6CHNLOK ?STOPT303SETUPCONFIRM8STOPT303RELEASE(CAUSE #6)RELEASEINDICATIONSTARTT308195.2.35.2.75.3.2+YYNNYNFigure5(sheet19of85):NetworksideSDLdiagramSIST EN 300 403-2 V1.3.1:2005

ETSIETSIEN300403-2V1.3.1(2000-11)36Process NETWORK_SIDE20(85)NETWORK SIDE SDL DIAGRAMS6CALLPRESENTCALLPROCEEDINGWASSETUPB/CAST?CHNLOK?STOPT303PROCEEDINGINDICATIONSTARTT3109STOPT303RELEASE(CAUSE #6)RELEASEINDICATIONSTARTT30819CHNLOK?STOPT303PROCEEDINGINDICATIONCREATEPROCESS(CES)INT
*CALL PROCREQUEST(CES)STARTT3109CREATEPROCESS(CES)INT
*RELEASEREQUEST(CES, CAUSE #6)65.2.35.2.5.25.3.2+NYNYYNFigure5(sheet20of85):NetworksideSDLdiagramSIST EN 300 403-2 V1.3.1:2005

ETSIETSIEN300403-2V1.3.1(2000-11)37Process NETWORK_SIDE21(85)NETWORK SIDE SDL DIAGRAMS6CALLPRESENTRELEASEWASSETUPB/CAST?STOPT303RELEASEB-CHANNEL IFNOT RELEASEDRELEASEINDICATIONRELEASECOMPLETERELEASECR0RELEASECOMPLETE65.8.4RELEASECOMPLETEWASSETUPB/CAST?SAVECAUSE6STOPT303RELEASEB-CHANNEL IFNOT RELEASEDRELEASEINDICATIONRELEASECR05.2.25.2.5.3NYYNFigure5(sheet21of85):NetworksideSDLdiagramSIST EN 300 403-2 V1.3.1:2005

ETSIETSIEN300403-2V1.3.1(2000-11)38Process NETWORK_SIDE22(85)NETWORK SIDE SDL DIAGRAMS6CALLPRESENTINFOREQUESTDISCONNECTREQUEST(CAUSE)STOPT303WASSETUPB/CAST?DISCONNECTB-CHANNEL IFNOT DISCONNECTED22TONEOPTION?DISCONNECT(PI, CAUSE)STARTTONESTARTT30612DISCONNECTB-CHANNEL IFNOT DISCONNECTEDDISCONNECT(CAUSE)STARTT3055.3.2 (e)5.3.4YNYNFigure5(sheet22of85):NetworksideSDLdiagramSIST EN 300 403-2 V1.3.1:2005

ETSIETSIEN300403-2V1.3.1(2000-11)39NETWORK SIDE SDL DIAGRAMSProcess NETWORK_SIDE23(85)NOTE 1. THIS PRIMITIVE MAY BE RECEIVED WHEN A TERMINAL IS CLEARED
DUE TO AN INVALID CHANNEL IDENTITY IN RESPONSE TO THE SETUP.NOTE 2. THIS MESSAGE IS IDENTICAL TO THE ORIGINAL SETUP MESSAGE.6CALLPRESENTINT
*REL COMPINDICATION(CES)NOTE 1DELETECES6TIMEOUTT3035.2.15.2.5.35.2.5.4FIRSTTIMEOUT?WASSETUPB/CAST?SETUP(PP)NOTE 2STARTT3036RELCOMPRCVD?SETUP(B/CAST)NOTE 2STARTT303RESTARTT3126RELEASEBCHANNEL IFNOT RELEASEDRELEASEINDICATION22WASSETUPB/CAST?DISCONNECTINDICATIONDISCONNECT(CAUSE #102)STARTT30512YNYNYNYNFigure5(sheet23of85):NetworksideSDLdiagramSIST EN 300 403-2 V1.3.1:2005

ETSIETSIEN300403-2V1.3.1(2000-11)40Process NETWORK_SIDE24(85)NETWORK SIDE SDL DIAGRAMS7CALLRECEIVEDSETUPACKWASSETUPB/CAST?REPORTSTATUS(CAUSE #97,#98 OR #101)7CHNLOK?CREATEPROCESS(CES)INT
*RELEASEREQUEST(CES, CAUSE #6)7CREATEPROCESS(CES)INT
*SETUP ACKREQUEST(CES)75.2.3, 5.2.45.3.2, 5.8.4+CALLPROCEEDINGWASSETUPB/CAST?CHNLOK ?CREATEPROCESS(CES)INT
*RELEASEREQUEST(CES, CAUSE #6)7CREATEPROCESS(CES)INT
*CALL PROCREQUEST(CES)75.2.3, 5.2.5.25.3.2, 5.8.4+NYNYNYNYFigure5(sheet24of85):NetworksideSDLdiagramSIST EN 300 403-2 V1.3.1:2005

ETSIETSIEN300403-2V1.3.1(2000-11)41Process NETWORK_SIDE25(85)NETWORK SIDE SDL DIAGRAMS7CALLRECEIVEDCONNECT5.2.35.2.75.3.2+WASSETUPB/CAST?CONNECTINDICATIONSTOP T301IF IMPLEMENTED8CHNLOK?CREATEPROCESS(CES)INT
*RELEASEREQUEST(CES, CAUSE #6)7CONNECTINDICATIONSTOP T301IF IMPLEMENTEDPRESELECTCESCREATEPROCESS(CES)INT
*CONNECTREQUEST(CES)8ALERTINGWASSETUPB/CAST?REPORTSTATUS(CAUSE #97,#98 OR #101)7CHNLOK?CREATEPROCESS(CES)INT
*RELEASEREQUEST(CES, CAUSE #6)7CREATEPROCESS(CES)INT
*ALERTINGREQUEST(CES)75.2.3, 5.2.5.25.3.2, 5.8.4+NYNYNYNYFigure5(sheet25of85):NetworksideSDLdiagramSIST EN 300 403-2 V1.3.1:2005

ETSIETSIEN300403-2V1.3.1(2000-11)42Process NETWORK_SIDE26(85)NETWORK SIDE SDL DIAGRAMSNOTE 1. IN THE CASE OF A BROADCAST SETUP, THE CALL STATE RETURNED IN THE STATUS MESSAGE SHOULD BE 6.NOTE 2. AS AN ALTERNATIVE, A STATUS ENQUIRY PROCEDURE ACCORDING TO SUBCLAUSE 5.8.4 OF ETS 300403-1 MAY ALSO BE FOLLOWED.
IN THIS CASE, AN INDIVIDUAL PROCESS SHOULD BE CREATED FOR THE RESPONDING TERMINAL IN ORDER TO CONTROL TIMER T322
AND THE APPROPRIATE RESPONSE. THIS PROCEDURE IS NOT DOCUMENTED IN THIS ETS AS IT INCREASES THE COMPLEXITY OF THE
REPRESENTATION. USE OF THE STATUS ENQUIRY PROCEDURE IN THIS CIRCUMSTANCE DOES NOT PROVIDE USEFUL ADDTIONAL
INFORMATION TO THE NETWORK.7CALLRECEIVEDPROGRESSWASSETUPB/CAST?STATUSNOTE 27PROGRESSINDICATION75.2.65.8.4,NOTE 1INFOWASSETUPB/CAST?INFOINDICATION755.8.4,NOTE 1YNYNFigure5(sheet26of85):NetworksideSDLdiagramSIST EN 300 403-2 V1.3.1:2005

ETSIETSIEN300403-2V1.3.1(2000-11)43Process NETWORK_SIDE27(85)NETWORK SIDE SDL DIAGRAMSNOTE 1. IN THE CASE OF A BROADCAST SETUP, THE CALL STATE RETURNED IN THE STATUS MESSAGE SHOULD BE 6.NOTE 2. AS AN ALTERNATIVE, A STATUS ENQUIRY PROCEDURE ACCORDING TO SUBCLAUSE 5.8.4 OF ETS 300403-1 MAY ALSO BE FOLLOWED.
IN THIS CASE, AN INDIVIDUAL PROCESS SHOULD BE CREATED FOR THE RESPONDING TERMINAL IN ORDER TO CONTROL TIMER T322
AND THE APPROPRIATE RESPONSE. THIS PROCEDURE IS NOT DOCUMENTED IN THIS ETS AS IT INCREASES THE COMPLEXITY OF THE
REPRESENTATION. USE OF THE STATUS ENQUIRY PROCEDURE IN THIS CIRCUMSTANCE DOES NOT PROVIDE USEFUL ADDITIONAL
INFORMATION TO THE NETWORK.7CALLRECEIVEDRELEASE5.8.4WASSETUPB/CAST?RELEASEINDICATIONRELEASECOMPLETESTOP T301IF IMPLEMENTEDRELEASEB-CHANNEL IFNOT RELEASEDRELEASECR0RELEASECOMPLETE7DISCONNECTWASSETUPB/CAST?STOP T301IF IMPLEMENTEDDISCONNECTB-CHANNEL IFNOT DISCONNECTEDDISCONNECTINDICATION11STATUSNOTE 275.3.35.8.4,NOTE 1RELEASECOMPLETE5.8.4WASSETUPB/CAST?STOP T301IF IMPLEMENTEDRELEASEB-CHANNEL IFNOT RELEASEDRELEASEINDICATIONRELEASECR07NYNYNYFigure5(sheet27of85):NetworksideSDLdiagramSIST EN 300 403-2 V1.3.1:2005

ETSIETSIEN300403-2V1.3.1(2000-11)44NETWORK SIDE SDL DIAGRAMSProcess NETWORK_SIDE28(85)NOTE 1. IF TIMER T301 EXPIRED, CAUSE #102
SHOULD BE SENT IN THE APPROPRIATE MESSAGE.7CALLRECEIVEDDISCONNECTREQUEST(CAUSE)5.3.2 (e)5.3.4STOP T301IF IMPLEMENTEDWASSETUPB/CAST?INT
*RELEASEREQUESTTO ALLACTIVE CESs,CAUSE,NOTE 1T312RUNNING?RELEASEBCHANNEL IFNOT RELEASEDRELEASEINDICATIONRELEASECR0RELEASEBCHANNEL IFNOT RELEASED22DISCONNECT(CAUSE)NOTE 1STARTT30512TIMEOUTT3015.2.5.4RELEASEINDICATIONINFOREQUEST5WASSETUPB/CAST?INFO7INT
*INFOREQUESTTO ALLACTIVE CESs7YNYNNYFigure5(sheet28of85):NetworksideSDLdiagramSIST EN 300 403-2 V1.3.1:2005

ETSIETSIEN300403-2V1.3.1(2000-11)45Process NETWORK_SIDE29(85)NETWORK SIDE SDL DIAGRAMS7CALLRECEIVEDINT
*PROGRESSINDICATION(CES)PROGRESSINDICATION7INT
*INFOINDICATION(CES)INFOINDICATION7INT
*CONNECTINDICATION(CES)+PRESELECTCESCONNECTINDICATIONSTOP T301IF IMPLEMENTED8INT
*CALL PROCINDICATION(CES)7INT
*ALERTINGINDICATION(CES)Figure5(sheet29of85):NetworksideSDLdiagramSIST EN 300 403-2 V1.3.1:2005

ETSIETSIEN300403-2V1.3.1(2000-11)46Process NETWORK_SIDE30(85)NETWORK SIDE SDL DIAGRAMS7CALLRECEIVEDINT
*REL COMPINDICATION(CES)DELETECES7INT
*RELEASEINDICATION(CES)5.2.5.3OTHERCESs ABLE TOPROCEED?SAVECAUSE7T312RUNNING?RELEASEINDICATIONSTOP T301IF IMPLEMENTEDRELEASEB-CHANNEL IFNOT RELEASEDRELEASECR0TIMEOUTT3125.2.5.3ANYCES ABLE TOPROCEED?7YNYNNYFigure5(sheet30of85):NetworksideSDLdiagramSIST EN 300 403-2 V1.3.1:2005

ETSIETSIEN300403-2V1.3.1(2000-11)47Process NETWORK_SIDE31(85)NETWORK SIDE SDL DIAGRAMS7ICALLRECEIVEDRELEASECOMPLETEINT
*RELEASEINDICATION(CES)INT
*REL COMPINDICATION(CES)RELEASEINT
*RELEASEINDICATION(CES)RELEASECOMPLETEINT
*REL COMPINDICATION(CES)DISCONNECTINT
*RELEASEINDICATION(CES)RELEASESTARTT30819IPROGRESSINT
*PROGRESSINDICATION(CES)7ICONNECTINT
*CONNECTINDICATION(CES)8IINFOINT
*INFOINDICATION(CES)7IINDIVIDUAL PROCESSFigure5(sheet31of85):NetworksideSDLdiagramSIST EN 300 403-2 V1.3.1:2005

ETSIETSIEN300403-2V1.3.1(2000-11)48Process NETWORK_SIDE32(85)NETWORK SIDE SDL DIAGRAMS7ICALLRECEIVEDINDIVIDUAL PROCESSINT
*INFOREQUESTINFO7IINT
*RELEASEREQUEST(CAUSE)RELEASE(CAUSE)STARTT30819IFigure5(sheet32of85):NetworksideSDLdiagramSIST EN 300 403-2 V1.3.1:2005

ETSIETSIEN300403-2V1.3.1(2000-11)49NETWORK SIDE SDL DIAGRAMSProcess NETWORK_SIDE33(85)8CONNECTREQUESTSETUPCOMPLETEREQUEST5.2.8,5.2.95.3.2 (b)+CONNECTBCHANNELWASSETUPB/CAST?SELECTCESCONNECT ACK(SELECTED CES)END PROCESS
*(SELECTED CES)INT
*RELEASEREQUEST(OTHER CESs, CAUSE #26)10CONNECTACK10DISCONNECTREQUEST(CAUSE)5.3.2 (e)5.3.4WASSETUPB/CAST?DISCONNECTSTARTT30512INT
*RELEASEREQUEST(TO ALL ACTIVE CESs, CAUSE)T312RUNNING?RELEASEBCHANNEL IFNOT RELEASEDRELEASEINDICATIONRELEASECR0RELEASEBCHANNEL IFNOT RELEASED22INFOREQUEST5WASSETUPB/CAST?INFO8INT
*INFOREQUESTTO ALLACTIVE CESs8YNNYNYNYFigure5(sheet33of85):NetworksideSDLdiagramSIST EN 300 403-2 V1.3.1:2005

ETSIETSIEN300403-2V1.3.1(2000-11)50Process NETWORK_SIDE34(85)NETWORK SIDE SDL DIAGRAMSNOTE 1. IN THE CASE OF A BROADCAST SETUP, THE CALL STATE RETURNED IN THE STATUS MESSAGE SHOULD BE 6.NOTE 2. AS AN ALTERNATIVE, A STATUS ENQUIRY PROCEDURE ACCORDING TO SUBCLAUSE 5.8.4 OF ETS 300403-1 MAY ALSO BE FOLLOWED.
IN THIS CASE, AN INDIVIDUAL PROCESS SHOULD BE CREATED FOR THE RESPONDING TERMINAL IN ORDER TO CONTROL TIMER T322
AND THE APPROPRIATE RESPONSE. THIS PROCEDURE IS NOT DOCUMENTED IN THIS ETS AS IT INCREASES THE COMPLEXITY OF THE
REPRESENTATION. USE OF THE STATUS ENQUIRY PROCEDURE IN THIS CIRCUMSTANCE DOES NOT PROVIDE USEFUL ADDITIONAL
INFORMATION TO THE NETWORK.8CONNECTREQUESTINFO55.8.4,NOTE 1WASSETUPB/CAST?INFOINDICATION8STATUSNOTE 28CALLPROCEEDING5.2.95.3.2 (b)5.8.4WASSETUPB/CAST?REPORTSTATUS(CAUSE #97,#98 OR #101)8CREATEPROCESS(CES)INT
*RELEASEREQUEST(CES, CAUSE #26)8CONNECTALERTINGSETUP ACKNYNYFigure5(sheet34of85):NetworksideSDLdiagramSIST EN 300 403-2 V1.3.1:2005

ETSIETSIEN300403-2V1.3.1(2000-11)51Process NETWORK_SIDE35(85)NETWORK SIDE SDL DIAGRAMSNOTE 1. IN THE CASE OF A BROADCAST SETUP, THE CALL
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