SIST EN 300 953 V7.0.1:2003

• 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
• Ref Project: ETSI EN 300 953 V7.0.1 (2000-01) - Digital cellular telecommunications system (Phase 2+) (GSM); Call Waiting (CW) and Call Hold (HOLD) supplementary services; Stage 3 (GSM 04.83 version 7.0.1 Release 1998)

Overview

SIST EN 300 953 V7.0.1:2003 specifies advanced procedures for supplementary services within the Global System for Mobile Communications (GSM) digital cellular network, specifically addressing Call Waiting (CW) and Call Hold (HOLD). This standard outlines Stage 3 (GSM 04.83 version 7.0.1, Release 1998) service logic and signaling interactions, upgraded from GSM Phase 2+ to align with Release 1998. Developed by the European Telecommunication Standards Institute (ETSI) and adopted as a Slovenian national standard by SIST, it plays a crucial role in supporting seamless user experiences for GSM network operators, equipment manufacturers, and service providers in Europe and globally.

Key Topics

• Call Waiting (CW):

  • Notifies subscribers of an incoming call while another call is in progress.
  • Allows subscribers to accept, reject, or put the current call on hold to answer the waiting call.
  • Includes procedures for activation, deactivation, interrogation (status request), and automatic network responses to various subscriber actions.

• Call Hold (HOLD):

  • Enables users to place an active call on hold, freeing the channel to accept another call or to alternate between multiple calls.
  • Defines functions to hold and retrieve calls, ensuring network and terminal coordination through standardized signaling messages.
  • Permits alternation between active and held calls, preserving call continuity.

• Supplementary Service Management:

  • Procedures for normal operation, including successful and unsuccessful call outcomes.
  • Detailed signaling for registration, erasure, activation, deactivation, invocation, and interrogation of supplementary services, ensuring interoperability.
  • Use of transaction identifiers and acknowledgment messages to coordinate actions between mobile stations and the GSM network.

Applications

• Mobile Network Operators:

  • Ensures interoperability across different vendors and systems by providing well-defined signaling for supplementary services.
  • Enhances customer satisfaction by supporting advanced call management features, reducing dropped or missed calls.

• Mobile Device Manufacturers:

  • Facilitates implementation of GSM voice features (such as call hold and call waiting) according to standardized GSM protocols.
  • Enables consistent user experiences and device certification for GSM compliance.

• Telecommunications Service Providers:

  • Supports value-added service offerings, increasing ARPU (Average Revenue Per User) through premium call handling services.
  • Simplifies troubleshooting and network optimization by adhering to standardized procedures for call management.

• End Users:

  • Enhances convenience by allowing users to manage multiple simultaneous voice calls efficiently.
  • Improves communication flexibility, critical for business and personal use in mobile environments.

Related Standards

For a holistic understanding and full implementation, SIST EN 300 953 V7.0.1:2003 references and aligns with several key GSM specifications, including:

• GSM 04.02: GSM PLMN access reference configuration
• GSM 04.08: Mobile radio interface Layer 3 specification
• GSM 04.10 / 04.80: General aspects and coding for supplementary services
• GSM 03.11 / 03.83: Technical realization of supplementary services
• GSM 02.04 / 02.83: General information on supplementary services and definitions for call waiting/hold

By ensuring compatibility with these related standards, SIST EN 300 953 V7.0.1:2003 delivers robust guidelines for implementing call waiting and call hold supplementary services in GSM-based mobile networks, supporting both legacy and next-generation cellular telephony environments.

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Keywords: GSM, call waiting, call hold, supplementary services, mobile telecommunications, ETSI standards, digital cellular, call management, SIST, GSM Release 1998.

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Digital cellular telecommunications system (Phase 2+) (GSM); Call Waiting (CW) and Call Hold (HOLD) supplementary services; Stage 3 (GSM 04.83 version 7.0.1 Release 1998)33.070.50Globalni sistem za mobilno telekomunikacijo (GSM)Global System for Mobile Communication (GSM)ICS:Ta slovenski standard je istoveten z:EN 300 953 Version 7.0.1SIST EN 300 953 V7.0.1:2003en01-december-2003SIST EN 300 953 V7.0.1:2003SLOVENSKI
STANDARD
ETSIEN300953V7.0.1(2000-01)EuropeanStandard(Telecommunicationsseries)Digitalcellulartelecommunicationssystem(Phase2+);CallWaiting(CW)andCallHold(HOLD)supplementaryservices;Stage3(GSM04.83version7.0.1Release1998)GLOBALSYSTEMFORMOBILECOMMUNICATIONSRSIST EN 300 953 V7.0.1:2003

ETSIETSIEN300953V7.0.1(2000-01)2(GSM04.83version7.0.1Release1998)ReferenceREN/SMG-030483Q7KeywordsDigitalcellulartelecommunicationssystem,GlobalSystemforMobilecommunications(GSM)ETSIPostaladdressF-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,thereferenceshallbetheprintingonETSIprintersofthePDFversionkeptonaspecificnetworkdrivewithinETSISecretariat.CopyrightNotificationNopartmaybereproducedexceptasauthorizedbywrittenpermission.Thecopyrightandtheforegoingrestrictionextendtoreproductioninallmedia.©EuropeanTelecommunicationsStandardsInstitute2000.Allrightsreserved.SIST EN 300 953 V7.0.1:2003

ETSIETSIEN300953V7.0.1(2000-01)3(GSM04.83version7.0.1Release1998)ContentsIntellectualPropertyRights.4Foreword.40Scope.50.1References.50.2Abbreviations.71CallWaiting(CW).71.1Waitingcallindicationandconfirmation.71.2Normaloperationwithsuccessfuloutcome.81.2.1Waitingcallaccepted;existingcallreleased.81.2.2Waitingcallaccepted;existingcallonhold.81.2.3ExistingcallreleasedbyuserA;waitingcallaccepted.91.3Normaloperationwithunsuccessfuloutcome.91.3.1WaitingcallreleasedbysubscriberB.91.3.2WaitingcallreleasedbycallinguserC.91.3.3Waitingcalltimesout.91.3.4Noreplyconditiontimerexpires.91.4Activation.91.5Deactivation.101.6Interrogation.111.7Invocation.111.8Registrationanderasure.112CallHold(HOLD).122.1Normaloperation.122.1.1Holdandretrievefunctions.122.1.2Holdinvocation.122.1.3Retrieveprocedure.132.1.4Alternatefromonecalltotheother.142.1.5Auxiliarystatesforholdandretrieve.152.1.6Anexampleofdimensionedstatespace.162.2Activationanddeactivation.162.3Registration,erasureandinterrogation.16AnnexA(informative):ChangeRequestHistory.17History.18SIST EN 300 953 V7.0.1:2003

ETSIETSIEN300953V7.0.1(2000-01)4(GSM04.83version7.0.1Release1998)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).Thepresentdocumentspecifiestheproceduresusedattheradiointerfacefornormaloperation,registration,erasure,activation,deactivation,invocationandinterrogationofcallcompletionsupplementaryserviceswithinthedigitalcellulartelecommunicationssystem.ThespecificationfromwhichthepresentdocumenthasbeenderivedwasoriginallybasedonCEPTdocumentation,hencethepresentationofthepresentdocumentmaynotbeentirelyinaccordancewiththeETSI/PNErules.ThecontentsofthepresentdocumentissubjecttocontinuingworkwithinSMGandmaychangefollowingformalSMGapproval.ShouldSMGmodifythecontentsofthepresentdocumentitwillbere-releasedwithanidentifyingchangeofreleasedateandanincreaseinversionnumberasfollows:Version7.x.ywhere:7indicatesRelease1998ofGSMPhase2+.xtheseconddigitisincrementedforallchangesofsubstance,i.e.technicalenhancements,corrections,updates,etc.ythethirddigitisincrementedwheneditorialonlychangeshavebeenincorporatedinthespecification.NationaltranspositiondatesDateofadoptionofthisEN:31December1999DateoflatestannouncementofthisEN(doa):31March2000DateoflatestpublicationofnewNationalStandardorendorsementofthisEN(dop/e):30September2000DateofwithdrawalofanyconflictingNationalStandard(dow):30September2000SIST EN 300 953 V7.0.1:2003

ETSIETSIEN300953V7.0.1(2000-01)5(GSM04.83version7.0.1Release1998)0ScopeThepresentdocumentspecifiestheproceduresusedattheradiointerface(ReferencepointUmasdefinedinGSM04.02)fornormaloperation,registration,erasure,activation,deactivation,invocationandinterrogationofcallcompletionsupplementaryservices.Provisionandwithdrawalofsupplementaryservicesisanadministrativematterbetweenthemobilesubscriberandtheserviceproviderandcausenosignallingontheradiointerface.InGSM04.10thegeneralaspectsofthespecificationofsupplementaryservicesatthelayer3radiointerfacearegiven.GSM04.80specifiestheformatsandcodingforthesupplementaryservices.DefinitionsanddescriptionsofsupplementaryservicesaregiveninGSM02.04andGSM02.8xandGSM02.9x-series.GSM02.83isrelatedspeciallytocallcompletionsupplementaryservices.TechnicalrealizationofsupplementaryservicesisdescribedinGSM03.11andGSM03.8xandGSM03.9x-series.GSM03.83isrelatedspeciallytocallcompletionsupplementaryservices.TheproceduresforCallControl,MobilityManagementandRadioResourcemanagementatthelayer3radiointerfacearedefinedinGSM04.07andGSM04.08.Thefollowingsupplementaryservicesbelongtothecallcompletionsupplementaryservicesandaredescribedinthepresentdocument:-Callwaiting(CW)(clause1);-Callhold(HOLD)(clause2).0.1ReferencesThefollowingdocumentscontainprovisionswhich,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]GSM02.04:"Digitalcellulartelecommunicationssystem(Phase2+);Generalonsupplementaryservices".[3]GSM02.81:"Digitalcellulartelecommunicationssystem(Phase2+);Lineidentificationsupplementaryservices-Stage1".[4]GSM02.82:"Digitalcellulartelecommunicationssystem(Phase2+);CallForwarding(CF)supplementaryservices-Stage1".[5]GSM02.83:"Digitalcellulartelecommunicationssystem(Phase2+);CallWaiting(CW)andCallHold(HOLD)supplementaryservices-Stage1".[6]GSM02.84:"Digitalcellulartelecommunicationssystem(Phase2+);MultiParty(MPTY)supplementaryservices-Stage1".SIST EN 300 953 V7.0.1:2003

ETSIETSIEN300953V7.0.1(2000-01)6(GSM04.83version7.0.1Release1998)[7]GSM02.85:"Digitalcellulartelecommunicationssystem(Phase2+);ClosedUserGroup(CUG)supplementaryservices-Stage1".[8]GSM02.86:"Digitalcellulartelecommunicationssystem(Phase2+);Adviceofcharge(AoC)supplementaryservices-Stage1".[9]GSM02.88:"Digitalcellulartelecommunicationssystem(Phase2+);CallBarring(CB)supplementaryservices-Stage1".[10]GSM02.90:"Digitalcellulartelecommunicationssystem(Phase2+);UnstructuredSupplementaryServicesData(USSD)-Stage1".[11]GSM02.91:"Digitalcellulartelecommunicationssystem(Phase2+);ECTsupplementaryservicesoperation-Stage1".[12]GSM03.11:"Digitalcellulartelecommunicationssystem(Phase2+);Technicalrealizationofsupplementaryservices".[13]GSM03.81:"Digitalcellulartelecommunicationssystem(Phase2+);Lineidentificationsupplementaryservices-Stage2".[14]GSM03.82:"Digitalcellulartelecommunicationssystem(Phase2+);CallForwarding(CF)supplementaryservices-Stage2".[15]GSM03.83:"Digitalcellulartelecommunicationssystem(Phase2+);CallWaiting(CW)andCallHold(HOLD)supplementaryservices-Stage2".[16]GSM03.84:"Digitalcellulartelecommunicationssystem(Phase2+);MultiParty(MPTY)supplementaryservices-Stage2".[17]GSM03.85:"Digitalcellulartelecommunicationssystem(Phase2+);ClosedUserGroup(CUG)supplementaryservices-Stage2".[18]GSM03.86:"Digitalcellulartelecommunicationssystem(Phase2+);AdviceofCharge(AoC)supplementaryservices-Stage2".[19]GSM03.88:"Digitalcellulartelecommunicationssystem(Phase2+);CallBarring(CB)supplementaryservices-Stage2".[20]GSM03.90:"Digitalcellulartelecommunicationssystem(Phase2+);Unstructuredsupplementaryservicesoperation-Stage2".[21]GSM03.91:"Digitalcellulartelecommunicationssystem(Phase2+);ExplicitCallTransfer(ECT)supplementaryservice-Stage2".[22]GSM04.02:"Digitalcellulartelecommunicationssystem(Phase2+);GSMPublicLandMobileNetwork(PLMN)accessreferenceconfiguration".[23]GSM04.07:"Digitalcellulartelecommunicationssystem(Phase2+);Mobileradiointerfacesignallinglayer3;Generalaspects".[24]GSM04.08:"Digitalcellulartelecommunicationssystem(Phase2+);Mobileradiointerfacelayer3specification".[25]GSM04.10:"Digitalcellulartelecommunicationssystem(Phase2+);Mobileradiointerfacelayer3;Supplementaryservicesspecification;Generalaspects".[26]GSM04.80:"Digitalcellulartelecommunicationssystem(Phase2+);Mobileradiointerfacelayer3supplementaryservicesspecification;Formatsandcoding".[27]GSM04.82:"Digitalcellulartelecommunicationssystem(Phase2+);CallForwarding(CF)supplementaryservices-Stage3".SIST EN 300 953 V7.0.1:2003

ETSIETSIEN300953V7.0.1(2000-01)7(GSM04.83version7.0.1Release1998)0.2AbbreviationsAbbreviationsusedinthepresentdocumentarelistedinGSM01.04.1CallWaiting(CW)1.1WaitingcallindicationandconfirmationWhenthisserviceisactivatedforthecontrollingsubscriberBandtheB-subscriberhascallsonlyinstatesU10(Active)orU26(MOModify)asdefinedinGSM04.08,thearrivalofanincomingcallfromsubscriberCshall,ifnoothercalliswaitingbesignalledtothemobilestationBbyanormalcallindication.InthatcasethenetworkandthemobilestationshallactinaccordancewithGSM04.08.Thetransactionidentifiershallbethetransactionidentifier(C-B)allocatedtothewaitingcallandmustnotbethesameasthetransactionidentifier(A-B)forthealreadyexistingcall(seefigure1.1).IntheCALLCONFIRMEDmessagesenttothenetworktheCauseinformationelementshallbeincludedwithcause#17"userbusy"(seefigure1.1).WhentheALERTINGmessageisreceivedbythenetworkthecallwaitingtimerT2shallbestartedorifcallforwardingonnoreplyisactivatedfortheB-subscriberthenoreplyconditiontimerT3shallbestarted.Ifthenetworkreceivedanon-zeroSSScreeningindicatorfromthecallingusersmobilestationtheALERTING/FACILITYmessagesenttoacallingmobileusershallincludetheFacilityinformationelementwithaninvokeoftheNotificationoperationindicatingthatthecalliswaiting(seefigure1.2).Ifthenetworkdidnotreceiveanon-zeroSSScreeningindicatorfromthecallingusersmobilestationitshallnotsendanotification,i.e.eithertheALERTINGmessagedoesnotincludetheNotificationoperationortheFACILITYmessageisomitted.MSNetworkSETUP<------------------------------------------------------------------------------------------------------------------------.Transactionidentifier(C-B).CALLCONFIRMED------------------------------------------------------------------------------------------------------------------------>.Transactionidentifier(C-B).Cause#17(userbusy).ALERTING------------------------------------------------------------------------------------------------------------------------>.Transactionidentifier(C-B).startT2/T3NOTE:TheSETUPmessageshallincludea"SignalInformation"elementwithvalue#7(callwaitingtoneon).ThisshallbeusedbytheMStogenerateanappropriatecallwaitingindication.Figure1.1:CallindicationtothemobilestationonarrivalofanincomingcallandcallconfirmationfromthemobilestationMSNetworkSETUP------------------------------------------------------------------------------------------------------------------------>CALLPROCEEDING<------------------------------------------------------------------------------------------------------------------------ALERTING/FACILITY<------------------------------------------------------------------------------------------------------------------------Facility(Invoke=NotifySS(CW,CallIsWaiting-Indicator))NOTE:Ifpossible,theALERTINGmessageshallbeusedasthecarriermessagefortheCallWaitingnotification.OtherwisetheFACILITYmessageshallbeused.Figure1.2:NotificationtoacallingmobilestationthatthecallisinthewaitingstateSIST EN 300 953 V7.0.1:2003

ETSIETSIEN300953V7.0.1(2000-01)8(GSM04.83version7.0.1Release1998)1.2Normaloperationwithsuccessfuloutcome1.2.1Waitingcallaccepted;existingcallreleasedIfthemobileuserBbeforeexpiryoftimerT2determinestoacceptthewaitingcallandreleasetheexistingcallthemobilestationshallreleasetheexistingcallfirstlyandacceptthewaitingcallsecondly.ForthereleaseoftheexistingcallthemobilestationandthenetworkshallactinaccordancewithGSM04.08.Thetransactionidentifiershallbethetransactionidentifier(A-B)ofthealreadyexistingcall.TheCauseinformationelementinthefirstclearingmessageshallindicatecause#16"normalclearing".FortheacceptanceofthewaitingcallthemobilestationandthenetworkshallactinaccordancewithGSM04.08.Thetransactionidentifiershallbethetransactionidentifier(C-B)ofthewaitingcall.WhenthenetworkreceivestheCONNECTmessagethetimerT2orifapplicablethetimerT3shallbestopped.1.2.2Waitingcallaccepted;existingcallonholdIfthemobileuserBbeforeexpiryoftimerT2orifapplicabletimerT3determinestoacceptthewaitingcallandputtheexistingcallonholdthemobilestationshallputtheexistingcallonholdfirstlyandacceptthewaitingcallsecondly.Incasethereisoneactivecall(A-B)andanothercall(D-B)onholdandcall(C-B)waiting,andthemobileuserBwantstoacceptthewaitingcall(C-B)andputtheactivecall(A-B)onhold,theheldcall(D-B)hastobereleasedfirst,eitherbyuserBoruserD,inaccordancewithGSM04.08.Toputtheexistingcallonholdthemobilestationandthenetworkshallactinaccordancewithclause2.Theholdfunctionshallbeinitiatedbythemobilestationandthetransactionidentifiershallbethetransactionidentifier(A-B)oftheexistingcall(seefigure1.3).FortheacceptanceofthewaitingcallthemobilestationandthenetworkshallactinaccordancewithGSM04.08.Thetransactionidentifiershallbethetransactionidentifier(C-B)ofthewaitingcall(seefigure1.3).WhenthenetworkreceivestheCONNECTmessagethetimerT2orifa
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