SIST EN 300 949 V7.1.1:2003

• Abstract:

  Upgrade from Phase 2+ to Release 1998

• Status: Published
• Publication Date: 30-Nov-2003
• ICS: 33.070.50 - Global System for Mobile Communication (GSM)
• 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
• Mandate: UIC
• Ref Project: ETSI EN 300 949 V7.1.1 (2000-05) - Digital cellular telecommunications system (Phase 2+) (GSM); Broadcast Call Control (BCC) protocol (GSM 04.69 version 7.1.1 Release 1998)

Overview

SIST EN 300 949 V7.1.1:2003 is the Slovenian standard that defines the Broadcast Call Control (BCC) protocol for the digital cellular telecommunications system (GSM) in its Phase 2+ version, specifically aligning with GSM 04.69, version 7.1.1, Release 1998. This standard, identical to EN 300 949 V7.1.1, specifies how broadcast call services are controlled and managed over GSM radio interfaces, enabling efficient and standardized group communication services such as Voice Broadcast Call Service (VBCS).

As an upgrade from GSM Phase 2+ to Release 1998, this standard addresses enhancements in the control and signaling procedures related to voice broadcast calls, contributing to improved interoperability, reliability, and service capabilities in telecommunications networks.

Key Topics

• Broadcast Call Control (BCC) Protocol: Definition of the signaling procedures between mobile stations (MS) and the network for initiating, managing, and terminating broadcast calls in the GSM system.
• Protocol States: Specification of the finite state machines for both mobile stations and network entities, detailing transitions for different call phases (establishment, active, termination) and error handling.
• Elementary Procedures: Detailed sequences and message exchanges required for various broadcast call control functions, including initiation, connection management, and parameter setting.
• Error and Exception Handling: Mandatory methods for managing unknown, unforeseen, or erroneous protocol data ensuring robust and future-proof protocol operation.
• Integration with GSM Layers: How the BCC protocol interacts with other GSM signaling layers and protocols, such as the Mobility Management (MM) sub-layer and Radio Resource (RR) sub-layer, for consistent call handling.

Applications

EN 300 949 V7.1.1 is crucial in the context of public safety, emergency response, and group communications. Key applications include:

• Voice Broadcast Call Service (VBCS): Enables simultaneous voice communication to multiple mobile subscribers within defined areas, supporting services for police, emergency services, or other dispatch-driven entities.
• Group and Dispatch Communications: Supports functionality for group call and broadcast scenarios where quick and synchronized voice delivery is essential.
• Network Interoperability: Ensures that equipment from multiple vendors can support compatible broadcast call behavior, critical for mobile network operators and service providers.
• Mobile Originated and Network-Initiated Broadcasts: Provides mechanisms for both users and the network to initiate or join ongoing broadcast calls as per operational requirements.
• Error Management in Live Environments: Encodes procedures for call teardown, abort, or recovery in the event of radio failures or protocol errors, maintaining service reliability.

Related Standards

SIST EN 300 949 V7.1.1:2003 is closely interconnected with several other GSM and ETSI standards, which provide foundational definitions and additional telecom capabilities:

• GSM 01.04: Terms, abbreviations, and acronyms in GSM communications.
• GSM 02.69 & GSM 03.69: Specifications for the Voice Broadcast Call Service stages and procedural definitions.
• GSM 03.03: Numbering, addressing, and identification for GSM systems.
• GSM 04.06, GSM 04.07, GSM 04.08: Data link and signaling layer specifications for handling mobile-to-network interfaces and radio resource management.
• EN 300 949 Series: Successive versions and updates to digital cellular telecommunications protocols within Europe.

By complying with SIST EN 300 949 V7.1.1:2003, mobile network operators, infrastructure providers, and device manufacturers ensure consistency, interoperability, and robust support for modern group and broadcast call services within GSM Phase 2+ networks, advancing reliable public and professional mobile communications.

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.NUPLOMHQMDDigital cellular telecommunications system (Phase 2+) (GSM); Broadcast Call Control (BCC) protocol (GSM 04.69 version 7.1.1 Release 1998)33.070.50Globalni sistem za mobilno telekomunikacijo (GSM)Global System for Mobile Communication (GSM)ICS:Ta slovenski standard je istoveten z:EN 300 949 Version 7.1.1SIST EN 300 949 V7.1.1:2003en01-december-2003SIST EN 300 949 V7.1.1:2003SLOVENSKI
STANDARD
ETSIEN300949V7.1.1(2000-04)EuropeanStandard(Telecommunicationsseries)Digitalcellulartelecommunicationssystem(Phase2+);BroadcastCallControl(BCC)protocol(GSM04.69version7.1.1Release1998)GLOBALSYSTEMFORMOBILECOMMUNICATIONSRSIST EN 300 949 V7.1.1:2003

ETSIETSIEN300949V7.1.1(2000-04)2(GSM04.69version7.1.1Release1998)ReferenceREN/SMG-030469Q7R1KeywordsDigitalcellulartelecommunicationssystem,GlobalSystemforMobilecommunications(GSM)ETSI650RoutedesLuciolesF-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 300 949 V7.1.1:2003

ETSIETSIEN300949V7.1.1(2000-04)3(GSM04.69version7.1.1Release1998)ContentsIntellectualPropertyRights.5Foreword.51Scope.62References.63Definitionsandabbreviations.63.1Definitions.63.2Abbreviations.74Applicability.75Mainconcepts.76ElementaryproceduresforBroadcastCallControl.86.1Overview.86.1.1General.86.1.2Broadcastcallcontrolstates.86.1.2.1BroadcastcallcontrolstatesattheMSsideoftheinterface.86.1.2.1.1AttributesandParametersofBCCintheMS.86.1.2.1.2NULL(U0).96.1.2.1.3MMCONNECTIONPENDING(U0.p).96.1.2.1.4BROADCASTCALLINITIATED(U1).96.1.2.1.5BROADCASTCALLACTIVE(U2).96.1.2.1.6BROADCASTCALLPRESENT(U3).96.1.2.1.7BROADCASTCALLCONNECTIONREQUESTED(U4).96.1.2.1.8TERMINATIONREQUESTED(U5).96.1.2.1.9RECEIVEMODEACTIVE(U6).96.1.2.1.10BCCTIMERSINTHEMS.106.1.2.1.11CONSISTENCYOFPARAMETERSANDSTATES.106.1.2.2BROADCASTCALLCONTROLSTATESATTHENETWORKSIDEOFTHEINTERFACE.106.1.2.2.1NULL(StateN0).106.1.2.2.2BROADCASTCALLINITIATED(N1).106.1.2.2.3BROADCASTCALLACTIVE(N2).116.1.2.2.4BROADCASTCALLESTABLISHMENTPROCEEDING(N3).116.1.2.2.5TERMINATIONREQUESTED(N4).116.2Proceduresforestablishmentofabroadcastcall.116.2.1Activationofabroadcastcallbythenetwork.116.2.2Mobileoriginatedestablishment.116.2.2.1Terminationduringmobileoriginatedestablishment.126.2.2.2Abnormalcases.126.2.3MobileterminatingbroadcastcallestablishmentintheMS.126.3Proceduresduringtheactivestateandreceivemodeactivestateofabroadcastcall.126.3.1Mobilestationproceduresintheactivestate.126.3.2Networkproceduresintheactivestate.136.3.3MobilestationproceduresintheRECEIVEMODEACTIVEstate.136.4Proceduresforrelease,abortion,andterminationofabroadcastcall.136.4.1Terminationprocedure.136.4.2Abortandreleaseprocedures.146.5Miscellaneousprocedures.146.5.1Statusprocedures.146.5.1.1Getstatusprocedure.146.5.1.2Setparameterprocedure.147Handlingofunknown,unforeseen,anderroneousprotocoldata.147.1General.147.2Messagetooshort.157.3Unknownorunforeseentransactionidentifier.15SIST EN 300 949 V7.1.1:2003

ETSIETSIEN300949V7.1.1(2000-04)4(GSM04.69version7.1.1Release1998)7.4Unknownorunforeseenmessagetype.157.5Non-semanticalmandatoryinformationelementerrors.157.6Unknownandunforeseeninformationelementsinthenon-imperativemessagepart.167.6.1Informationelementsunknowninthemessage.167.6.2Outofsequenceinformationelements.167.6.3RepeatedInformationelements.167.7Non-imperativemessageparterrors.167.7.1SyntacticallyincorrectoptionalInformationelements.167.8Messageswithsemanticallyincorrectcontents.168Messagefunctionaldefinitionsandcontents.168.1CONNECT.178.2GETSTATUS.188.2.1mobileidentity.188.3IMMEDIATESETUP.188.3.1Mobileidentity.198.4SETPARAMETER.198.5SETUP.198.6STATUS.208.6.1Callstate.208.6.2Stateattributes.208.7TERMINATION.218.8TERMINATIONREJECT.218.9TERMINATIONREQUEST.219Contentsofinformationelementsvalueparts.229.1ProtocolDiscriminator.229.2Transactionidentifier.229.3MessageType.229.4Otherinformationelements.229.4.1CallReference.239.4.2Callstate.239.4.3Cause.249.4.4Originatorindication.259.4.5SpareHalfOctet.269.4.6Stateattributes.26AnnexA(Informative):ChangeRequestHistory.27History.28SIST EN 300 949 V7.1.1:2003

ETSIETSIEN300949V7.1.1(2000-04)5(GSM04.69version7.1.1Release1998)IntellectualPropertyRightsIPRsessentialorpotentiallyessentialtothepresentdocumentmayhavebeendeclaredtoETSI.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)hasbeenproducedbytheSpecialMobileGroup(SMG).ThepresentdocumentspecifiestheBroadcastCallControl(BCC)protocolwithinthedigitalcellulartelecommunicationssystem(Phase2+).ThecontentsofthepresentdocumentissubjecttocontinuingworkwithinSMGandmaychangefollowingformalSMGapproval.ShouldSMGmodifythecontentsofthepresentdocumentitwillbere-releasedwithanidentifyingchangeofreleasedateandanincreaseinversionnumberasfollows:Version7.x.ywhere:7indicatesRelease1998ofGSMPhase2+.xtheseconddigitisincrementedforallchangesofsubstance,i.e.technicalenhancements,corrections,updates,etc.ythethirddigitisincrementedwheneditorialonlychangeshavebeenincorporatedinthespecification.NationaltranspositiondatesDateofadoptionofthisEN:31March2000DateoflatestannouncementofthisEN(doa):30June2000DateoflatestpublicationofnewNationalStandardorendorsementofthisEN(dop/e):31December2000DateofwithdrawalofanyconflictingNationalStandard(dow):31December2000SIST EN 300 949 V7.1.1:2003

ETSIETSIEN300949V7.1.1(2000-04)6(GSM04.69version7.1.1Release1998)1ScopeThepresentdocumentspecifiestheBroadcastCallControl(BCC)protocolusedbytheVoiceBroadcastCallService(VBCS)ontheradiointerface.2ReferencesThefollowingdocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthepresentdocument.• Referencesareeitherspecific(identifiedbydateofpublication,editionnumber,versionnumber,etc.)ornon-specific.• Foraspecificreference,subsequentrevisionsdonotapply.• Foranon-specificreference,thelatestversionapplies.• Anon-specificreferencetoanETSshallalsobetakentorefertolaterversionspublishedasanENwiththesamenumber.• ForthisRelease1998document,referencestoGSMdocumentsareforRelease1998versions(version7.x.y).[1]GSM01.04:"Digitalcellulartelecommunicationssystem(Phase2+);Abbreviationsandacronyms".[2]GSM02.69):"Digitalcellulartelecommunicationssystem(Phase2+);VoiceBroadcastCallService(VBCS)stage1".[3]GSM03.03:"Digitalcellulartelecommunicationssystem(Phase2+);Numbering,addressingandidentification".[4]GSM03.67:"Digitalcellulartelecommunicationssystem(Phase2+);enhancedMulti-LevelPrecedenceandPre-emptionservice(eMLPP)-Stage2".[5]GSM03.69:"Digitalcellulartelecommunicationssystem(Phase2+);VoiceBroadcastCallService(VBCS)stage2".[6]GSM04.06:"Digitalcellulartelecommunicationssystem(Phase2+);MobileStation-BaseStationSystem(MS-BSS)interfaceDataLink(DL)layerspecification".[7]GSM04.07:"Digitalcellulartelecommunicationssystem(Phase2+);Mobileradiointerfacesignallinglayer3Generalaspects".[8]GSM04.08:"Digitalcellulartelecommunicationssystem(Phase2+);Mobileradiointerfacelayer3specification".3Definitionsandabbreviations3.1DefinitionsDefinitionsusedinthepresentdocumentarealsodefinedinGSM02.69.Forthepurposesofthepresentdocument,thefollowingtermsanddefinitionsapply.Attachmentoftheuserconnection:SeeGSM04.08,subclause5.2.Broadcastcallchannel:Downlinkchanneltobeallocatedineachcellofthegroupcallareaforaparticularbroadcastcall.AllMSsofthelisteningservicesubscribersinonecellshalllistentothecommondownlink.SIST EN 300 949 V7.1.1:2003

ETSIETSIEN300949V7.1.1(2000-04)7(GSM04.69version7.1.1Release1998)Broadcastcall:Isusedinthesamesenseas"voicebroadcastcall".Callinguser:BCCentityintheMobileStation(MS)initiatingorhavinginitiatedabroadcastcall.Clearingthecontextrelatedtothebroadcastcallestablishment:allrunningBCCtimersintherelevantBCCentityarestopped,allattributesintherelevantBCCentityaredeleted.Downlink:NetworktoMSdirection.Groupreceivemode:SeeGSM04.08.Originatingmobilestation:MSinitiatingorhavinginitiatedthebroadcastcall.Uplink:Mobilestationtonetworkdirection.3.2AbbreviationsAbbreviationsusedinthepresentdocumentarealsolistedinGSM01.04.Forthepurposesofthepresentdocument,thefollowingabbreviationapplies:BCCBroadcastCallControl.4ApplicabilitySupportofthebroadcastcallprotocolisoptionalintheMSandinthenetwork.5MainconceptsThepresentdocumentdescribesthebroadcastcallcontrol(BCC)protocol,whichisoneoftheprotocolsoftheConnectionManagement(CM)sublayer(seeGSM04.07).ThereisingeneralmorethanoneMSengagedinabroadcastcall.Consequently,thereisingeneralmorethanoneMSwithaBCCentityengagedinthesamebroadcastcall,andthereisoneBCCentityinthenetworkengagedinthatbroadcastcall.UnderwhichconditionsaBCCmessageispassedfromlower(sub-)layerstotheBCCentityisdefinedinthespecificationsofthesub-layers.TheMSshallignoreBCCmessagesthatitreceiveswhichweresentinunacknowledgedmodeandwhichexplicitlyspecifyasdestinationamobileidentitywhichisnotamobileidentityoftheMS.HigherlayersandtheMMsub-layerdecidewhentoacceptparallelBCCtransactionsandwhen/whethertoacceptBCCtransactionsinparalleltootherCMtransactions.Thebroadcastcallmaybeinitiatedbyamobileuserorbyadispatcher.Specificationofaprotocolfordispatchersisoutofthescopeofthepresentdocument.Hence,inthescopeofthepresentdocument,thereare-oneBCCentityinthenetwork;and-oneormorethanoneBCCentitiesindifferentMSsengagedinabroadcastcall,andoneorenoneoftheMSsistheoriginatorofthebroadcastcall(calledtheoriginatingMSinthisETS).NOTE:WhereasfortheGroupCallControl(GCC)protocol(seeGSM04.68),incertainsituations,theGCCentityinaMSassumestobetheoriginatorofabroadcastcallwithoutbeingtheoriginator,thisisnotthecasefortheBCCprotocol.SIST EN 300 949 V7.1.1:2003

ETSIETSIEN300949V7.1.1(2000-04)8(GSM04.69version7.1.1Release1998)TheoriginatoroftheBCCtransactionchoosestheTransactionIdentifier(TI).AMSnotassumingtobetheoriginatorofthetransactionwillchosethetransactionidentifierreceivedfromthenetwork,settingtheTIflagto1+xmod2wherexisthereceivedTIflag.ThisETSdescribesthebroadcastcallcontrolprotocolonlywithregardtotwopeerentities,oneinaMS,theotheroneinthenetwork.Thecallcontrolentitiesaredescribedascommunicatingfinitestatemachineswhichexchangemessagesacrosstheradiointerfaceandcommunicateinternallywithotherprotocol(sub)layers.Inparticular,theBCCprotocolusestheMMandRRsublayerspecifiedinGSM04.08.TheBCCentityinaMSthatisnottheoriginatorofthebroadcastcallshallnotsendmessagestoitspeerentity.Thisdescriptioninonlynormativeasfarastheconsequentialexternallyobservablebehaviourisconcerned.Forsimplicity,insteadofusingtheterms"BCCentityintheMS"and"BCCentityinthenetwork",thepresentdocumentoftenusestheterms"MS"and"network"ifnoconfusionmayarise.Certainsequencesofactionsofthetwopeerentitiescompose"elementaryprocedures"whichareusedasabasisforthedescriptioninthepresentdocument.Theseelementaryproceduresaredefinedinclause6.ThenetworkshouldapplysupervisoryfunctionstoverifythattheBCCproceduresareprogressingandifnot,takeappropriatemeanstoresolvetheproblems.This,however,isoutofthescopeofthepresentdocument.6ElementaryproceduresforBroadcastCallControl6.1Overview6.1.1GeneralTheelementaryproceduresmaybebroadcastedintothefollowingclasses:-broadcastcallestablishmentprocedures;-broadcastcallterminationprocedures;-broadcastcallinformationphaseprocedures;-miscellaneousprocedures.6.1.2Broadcastcallcontrolstates6.1.2.1BroadcastcallcontrolstatesattheMSsideoftheinterfaceTheBCCentityoftheMSisdescribedasanextendedfinitestatemachine.Itperformstransitionsbetweenstates.Ithascertainparametersandattributes,e.g.configurationparametersandbehaviourparameters,whichitsetsandchangesbasedoninteractionwithhigherandlower(sub-)layersandonmessageexchangewithitspeerentity.Ifaconfigurationparameterissettoacertainvalue,theMSshallalsoadapttheconfigurationaccordingly.Behaviourparametersdecideon(partof)thebehaviouroftheBCCentity.WhentheBCCentityintheMSreceivesamessage,itshallfirstanalysewhetheritshallignorethemessage,seeclauses5and7.6.1.2.1.1AttributesandParametersofBCCintheMSForthefollowingbehaviourparameters,thedescriptionisinformative.ParameterDescriptionORIGDependingonthecontext,theMSassumestobetheoriginatorofthecall(ORIG=T)ornottobetheoriginatorofthecall(ORIG=F).COMMDependingonthecontext,theMSassumesthatcommunicationwithitspeerentityisenabledinbothdirections(COMM=T)ornot(COMM=F).ForthefollowingconfigurationparameterstheMSshalladaptitsconfigurationaccordingtotheparametervalueandparameterdefinition.SIST EN 300 949 V7.1.1:2003

ETSIETSIEN300949V7.1.1(2000-04)9(GSM04.69version7.1.1Release1998)ParameterDefinitionD-ATTD-ATT=TmeansthattheMSattachestheuserconnectionforthebroadcastcallinthedownlink.D-ATT=FmeansthattheMSdoesnotattachtheuserconnectionforthebroadcastcallinthedownlink.U-ATTU-ATT=TmeansthattheMSattachestheuserconnectionforthebroadcastcallintheuplink.U-ATT=FmeansthattheMSdoesnotattachtheuserconnectionforthebroadcastcallintheuplink.6.1.2.1.2NULL(U0)NobroadcastcallexistsfortheBCCentity.Whenenteringthestate,parametersshallbesettothefollowingvalues,andconfigurationshallbeadaptedtothenewvaluesofconfigurationparameters:ORIG=F,COMM=F,D-ATT=F,U-ATT=F.6.1.2.1.3MMCONNECTIONPENDING(U0.p)TheBCCentityhasrequestedtheexplicitestablishmentofanMMconnection.Whenenteringthestate,parametersshallbesettothefollowingvalues,andconfigurationshallbeadaptedtothenewvaluesofconfigurationparameters:ORIG=T,COMM=F,D-ATT=F,U-ATT=F.6.1.2.1.4BROADCASTCALLINITIATED(U1)TheBCCentityhasrequestedthepeerentityinthenetworktoestablishabroadcastcall.Whenenteringthestate,parametersshallbesettothefollowingvalues,andconfigurationshallbeadaptedtothenewvaluesofconfigurationparameters:ORIG=T,COMM=T,D-ATT=F,U-ATT=F.6.1.2.1.5BROADCASTCALLACTIVE(U2)Thebroadcastcallisestablishedatleastinonecell.Whenenteringthestate,parametersshallbesettothefollowingvalues,andconfigurationshallbeadaptedtothenewvaluesofconfigurationparameters:ORIG=T,COMM=T,D-ATT=T,U-ATT=T.6.1.2.1.6BROADCASTCALLPRESENT(U3)TheMShasreceivedanotificationaboutanongoingbroadcastcall.Higherlayersarerequestedtoacceptorrejectthecall.Whenenteringthestate,parametersshallbesettothefollowingvalues,andconfigurationshallbeadaptedtothenewvaluesofconfigurationparameters:ORIG=F,COMM=F,D-ATT=F,U-ATT=F.6.1.2.1.7BROADCASTCALLCONNECTIONREQUESTED(U4)TheMShasreceivedanotificationaboutanongoingbroadcastcall.Higherlayershavedecidedtoacceptthecall.Whenenteringthestate,parametersshallbesettothefollowingvalues,andconfigurationshallbeadaptedtothenewvaluesofconfigurationparameters:ORIG=F,COMM=F,D-ATT=F,U-ATT=F.6.1.2.1.8TERMINATIONREQUESTED(U5)TheMSwhichistheoriginatorofthebroadcastcallhasbeeninstateU1orU2andhassentaTERMINATIONREQUESTmessagetothenetwork.Whenenteringthestate,parametersshallbesettothefollowingvalues,andconfigurationshallbeadaptedtothenewvaluesofconfigurationparameters:ORIG=T,COMM=T,D-ATT=T,U-ATT=T.6.1.2.1.9RECEIVEMODEACTIVE(U6)TheBCCentityintheMSinstateU4,BROADCASTCALLCONNECTIONREQUESTED,hasgotanindicationfromlower(sub-)layersthatRRhasenteredgroupreceivemode(seeGSM04.08).Whenenteringthestate,parametersshallbesettothefollowingvalues,andconfigurationshallbeadaptedtothenewvaluesofconfigurationparameters:ORIG=F,COMM=F,D-ATT=T,U-ATT=F.SIST EN 300 949 V7.1.1:2003

ETSIETSIEN300949V7.1.1(2000-04)10(GSM04.69version7.1.1Release1998)6.1.2.1.10BCCTIMERSINTHEMSTable6.1specifiesthetimersusedinBCC.Thedenotationofcolumnsisdefinedasfollows:timer::=nameofthetimer;set::=underwhichconditionsthetimerisset(i.e.,started);stopped::=underwhichconditionsthetimerisstopped;runninginstate(s)::=inwhichstate(s)thetimermayberunning;actionatexpiry::=whichactionstheBCCentityshallperformatexpiry;value::=thedurationbetweensettingthetimerandexpiryofthetimer("s"denotes"second(s)""xx-yy"meansthatanyvaluebetweenxxandyyispermitted).Table6.1:SpecificationoftimersusedinBCCtimersetstoppedrunninginstate(s)actionatexpiryvalueTnochannelinstateU6onreceiptofanindicationfromlower(sub-)layersthatnochanneliscurrentlyavailablewhenleavingU6orwhenreceivinginU6anindicationfromlower(sub-)layersthatachannelisavailableinU6,dependingonfurtherconditionsseesubclause6.3.13sTMM-estwhenenteringU0.pusingtheset-upprocedurewhenenteringU1usingtheimmediateset-upprocedurewhenleavingU0.porU1U0.p,U1seesubclause6.2.15sTtermwhensendingaTERMINATIONREQUESTwhenreceivingaTERMINATIONorTERMINATIONREJECTU5abortbroadcastcall10sTconnreqwhenenteringstateU4whenleavingstateU4U4abortbroadcastcall10-30s6.1.2.1.11CONSISTENCYOFPARAMETERSANDSTATESTheMSshallconsiderthefollowingparametervaluesasinconsistentwiththestateorsub-state:ORIG=TisinconsistentwithstatesU3,U4,andU6.COMM=TisinconsistentwithstatesU0,U3,U4,andU6.AllothervaluesofparametersORIG,COMM,D-ATT,andU-ATTshallnotbeconsideredbytheMSasinconsistentwithastate.6.1.2.2BROADCASTCALLCONTROLSTATESATTHENETWORKSIDEOFTHEINTERFACE6.1.2.2.1NULL(StateN0)NobroadcastcallexistsfortheBCCentity.6.1.2.2.2BROADCASTCALLINITIATED(N1)TheBCCentityhasreceivedtheindicationthatapeerentityinaMSwantstoestablishabroadcastcallforacertainbroadcastidentity.SIST EN 300 949 V7.1.1:2003

ETSIETSIEN300949V7.1.1(2000-04)11(GSM04.69version7.1.1Release1998)6.1.2.2.3BROADCASTCALLACTIVE(N2)Thebroadcastcallisestablishedinatleastonecell;theremaybeaMSwhichhasseizedtheuplinkornot;theremaybetalkingdispatchersornot.6.1.2.2.4BROADCASTCALLESTABLISHMENTPROCEEDING(N3)TheBCCentitywantstoacceptthebroadcastcall,hasinitiatedestablishmentofcorrespondingbroadcastcallchannels,and,ifthereisacallinguser.hassentaCONNECTmessagetothecallinguser.6.1.2.2.5TERMINATIONREQUESTED(N4)TheBCCentityhasaskedlowersub-layerstoterminatethebroadcastcallinallcellsandwaitsforaconfirmationthatthebroadcastcallhasbeenterminatedinallcells.6.2Proceduresforestablishmentofabroadcastcall6.2.1ActivationofabroadcastcallbythenetworkTheBCCentityinthenetworkmayinitiatetheactivationofabroadcastcallwithacertainbroadcastcallreferenceandpriorityinalistofcellsbyaskinglowerlayerstoestablishthebroadcastcallwiththatbroadcastcallreferenceandpriorityinthosecells.Itthenwaitsuntilitisinformedbylower(sub-)layersthatresourceactivationwassufficientlysuccessful,andentersstateN2,BCACTIVE,6.2.2MobileoriginatedestablishmentHigherlayersintheMSmayasktheBCCentityinstateU0,NULL,toestablishabroadcastcall,eitherusingtheimmediateset-upprocedureorusingtheset-upprocedure.Therequestcontainsagroup-idandmaycontainapriorityindication.Onrequestofhigherlayerstoestablishabroadcastcallusingtheset-upprocedure,theBCCentityoftheMSbuildsanappropriateSETUPmessageandaskslower(sub-)layerstoestablishanMMconnectionexplicitly(
...