SIST EN 302 403 V8.0.1:2003

• Abstract:

  8.0.0 Specification upgrade to Release 1999 version 8.0.0

• 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 302 403 V8.0.1 (2000-10) - Digital cellular telecommunications system (Phase 2+) (GSM); GSM Cordless Telephony System (CTS), Phase 1; Service description; Stage 1 (GSM 02.56 version 8.0.1 Release 1999)

Overview

SIST EN 302 403 V8.0.1:2003 is a European standard that defines the service description for the GSM Cordless Telephony System (CTS), Phase 1, within the digital cellular telecommunications system (GSM Phase 2+). Developed by the Slovenski inštitut za standardizacijo (SIST) and harmonized with EN 302 403, this standard forms part of Release 1999 of the GSM specifications. It addresses the integration of cordless telephony functionality into standard GSM mobile terminals, detailing the necessary system behavior, user experience, compatibility, and security requirements for cordless access to both fixed networks (like PSTN/ISDN) and GSM networks.

Key Topics

• GSM Cordless Telephony System (CTS): Describes a radio communications system that enables GSM mobile stations (MS) to access fixed networks or GSM networks via a cordless radio interface.
• Phase 1 Focus: Supports basic speech teleservices, including DTMF (dual-tone multi-frequency) signaling, in residential environments with a single cell.
• System Components: Defines roles for CTS Fixed Parts (FP) and Mobile Stations (MS), including enrolment and attachment processes, subscription management, and roaming capabilities.
• Service Aspects:
  • User Experience: Simplified installation and configuration with support for multiple user enrolments and flexible subscription options.
  • Mobility: Mode selection between traditional GSM and CTS (cordless) usage, attachment to multiple FPs, and both manual and automatic switching depending on coverage.
  • Supplementary Services: Support for GSM’s supplementary services and SMS, with clear interoperability between the cordless and GSM networks.
• Radio Interface: Reuses GSM frequencies for CTS operation, allowing either license-exempt or licensed band use while ensuring coexistence and minimal interference with standard GSM services.
• Security Requirements: Features authentication for both FP and MS, encryption of signalling and user data, and protection of sensitive information, aligning security practices with those defined in GSM.

Applications

Implementing SIST EN 302 403 V8.0.1:2003 allows telecom manufacturers and operators to provide integrated fixed-mobile telephony solutions by enabling GSM mobile devices to function as cordless phones within defined coverage areas. Key use cases and benefits include:

• Residential and Business Cordless Access: Users can seamlessly switch between wide-area cellular GSM coverage and local cordless coverage using the same handset and SIM.
• Cost Efficiency: Reduced need for separate indoor wireless telephone systems through reuse of existing GSM infrastructure and spectrum.
• Enhanced User Mobility: Supports smooth handover and operation between home/office environments and public GSM networks.
• Service Consistency: Ensures that supplementary services such as call holding, call transfer, internal calling within the CTS, SMS, and emergency services are available in both GSM and CTS modes.
• Operator Flexibility: Enables network operators to offer value-added fixed-mobile convergence services, differentiate offerings and manage spectrum use more efficiently.

Related Standards

Implementers of SIST EN 302 403 V8.0.1:2003 should be familiar with related GSM and telecommunications standards, including:

• GSM 01.04: Abbreviations and acronyms for GSM systems
• GSM 02.07: Features of GSM Mobile Stations
• GSM 02.09: Security aspects for authentication and encryption
• GSM 02.81 & 02.96: Supplementary services and name identification
• GSM 03.40: Short Message Service (SMS) protocols
• GSM 02.30: Man-Machine Interface (MMI) specifications
• ETS 300111, 300109, 300110: ISDN and PSTN supplementary and bearer services

SIST EN 302 403 V8.0.1:2003 is integral to the development of converged communication devices and networks, offering a standard approach for integrating cordless telephony with the established GSM ecosystem. This optimizes user convenience and operational efficiency for both network operators and end users.

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Digital cellular telecommunications system (Phase 2+) (GSM); GSM Cordless Telephony System (CTS), Phase 1; Service description; Stage 1 (GSM 02.56 version 8.0.1 Release 1999)33.070.50Globalni sistem za mobilno telekomunikacijo (GSM)Global System for Mobile Communication (GSM)ICS:Ta slovenski standard je istoveten z:EN 302 403 Version 8.0.1SIST EN 302 403 V8.0.1:2003en01-december-2003SIST EN 302 403 V8.0.1:2003SLOVENSKI
STANDARD
ETSIEN302403V8.0.1(2000-10)EuropeanStandard(Telecommunicationsseries)Digitalcellulartelecommunicationssystem(Phase2+);GSMCordlessTelephonySystem(CTS),Phase1;Servicedescription;Stage1(GSM02.56version8.0.1Release1999)GLOBALSYSTEMFORMOBILECOMMUNICATIONSRSIST EN 302 403 V8.0.1:2003

ETSIETSIEN302403V8.0.1(2000-10)2(GSM02.56version8.0.1Release1999)ReferenceREN/SMG-010256Q8KeywordsDigitalcellulartelecommunicationssystem,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 302 403 V8.0.1:2003

ETSIETSIEN302403V8.0.1(2000-10)3(GSM02.56version8.0.1Release1999)ContentsIntellectualPropertyRights.5Foreword.5Introduction.61Scope.72References.73Definitionsandabbreviations.83.1Definitions.83.2Abbreviations.94Description.94.1Systemoverview.94.2Serviceaspects.104.2.1General.104.2.2Useraspects.114.2.3Subscriptions.114.2.3.1CTS-roamingaspects.114.2.3.2WithdrawalofCTSsubscription.124.2.4GSMcoverage.124.2.5Mobility.124.2.5.1ModeselectionbetweenCTSandPLMN.124.2.5.2AttachmentofthesameCTS-MSwithmultipleCTS-FPs.134.2.5.3AttachmentofmultipleCTS-MSswiththesameCTS-FP.134.2.5.4AttachmentstatusofaCTS-MS.134.2.6CTSapplications.134.2.6.1Tele-services.134.2.6.2Supplementaryservices.144.2.6.3Additionalsupportforfixednetworksupplementaryservices.144.2.6.4ManMachineInterface(MMI).144.2.6.5CTSinternalcalls.144.2.6.6CTSinternalcalltransfer.144.2.6.7CTSinternalcallhold.144.2.6.8Mobilehunting.144.2.6.9SMS-MT.144.2.6.10SMS-MO.154.2.6.11Otherservices.154.3RadiointerfaceandGSMco-existenceaspects.154.3.1Generalprinciples.154.3.2Broadcastchannelfunctionality.154.4Securityrequirements.154.4.1General.154.4.2Enrolment.164.4.3Attachment.164.4.4Protectionofcommunications.164.4.5SecurityParameterStorageRequirements.164.4.6De-activation.175NormalProcedures.175.1EnrolmentofCTS-FP.175.1.1CTSoperatorprocedureforenrolmentofCTS-FP.175.1.2UserprocedureforenrolmentofCTS-FP.175.2EnrolmentofCTS-MSs.185.3De-enrolmentofaCTS-MS.185.4AttachmentofCTS-MS.185.5Callprocedures.195.5.1CTS-MSoriginatedcalls.19SIST EN 302 403 V8.0.1:2003

ETSIETSIEN302403V8.0.1(2000-10)4(GSM02.56version8.0.1Release1999)5.5.1.1NumbercompatibilitybetweenGSMformatsandfixednetworkformats.195.5.2CTS-MSterminatedcalls.195.5.3CTSinternalcalls(optional).205.5.4CTSinternalcalltransfer(optional).205.6Maintenance.206CTSde-activation.216.1CTS-FPde-activationbytheCTSoperator.216.2CTS-FPde-activationbytheuser.216.3CTS-FPde-activationbyselfcontrollingfeatures.216.4CTS-MSde-activationbytheCTSoperator.217Exceptionalprocedures.218Chargingaspects.219CrossPhaseCompatibility.22AnnexA(informative):LaterphasesofCTS.23AnnexB(informative):Changehistory.24History.25SIST EN 302 403 V8.0.1:2003

ETSIETSIEN302403V8.0.1(2000-10)5(GSM02.56version8.0.1Release1999)IntellectualPropertyRightsIPRsessentialorpotentiallyessentialtothepresentdocumentmayhavebeendeclaredtoETSI.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)hasbeenproducedbyETSITechnicalCommitteeSpecialMobileGroup(SMG).Thepresentdocumentspecifiesthestage1descriptionfortheCordlessTelephonySystem(CTS)withinthedigitalcellulartelecommunicationssystem.ThecontentsofthepresentdocumentissubjecttocontinuingworkwithinSMGandmaychangefollowingformalSMGapproval.ShouldSMGmodifythecontentsofthepresentdocument,itwillbere-releasedbySMGwithanidentifyingchangeofreleasedateandanincreaseinversionnumberasfollows:Version8.x.ywhere:8IndicatesGSMPhase2+Release1999;xtheseconddigitisincrementedfortechnicalenhancements,corrections,updates,etcythethirddigitisincrementedwheneditorialonlychangeshavebeenincorporatedinthespecification.NationaltranspositiondatesDateofadoptionofthepresentdocument:29September2000Dateoflatestannouncementofthepresentdocument(doa):31December2000DateoflatestpublicationofnewNationalStandardorendorsementofthepresentdocument(dop/e):30June2001DateofwithdrawalofanyconflictingNationalStandard(dow):30June2001SIST EN 302 403 V8.0.1:2003

ETSIETSIEN302403V8.0.1(2000-10)6(GSM02.56version8.0.1Release1999)IntroductionToday,thereexistsacleardistinctionbetweenthepublicmobiletelephonesystemsforwideareacoverageontheonehand,andprivatecordlesstelephonesystemsforlocalareacoverageontheotherhand.Recently,attemptshavebeenmadetointegratethewideareacellularandthelocalareacordlessfunctionintooneandthesameMobileEquipment(ME).However,becauseoftheincompatibilitybetweentheexistingcellularandcordlessstandards,thisresultsinMEimplementationswithratherlowcost-efficiency.TheintentionoftheGSMCordlessTelephonySystem(CTS)isthereforetoprovidecordlessfunctionalitytoastandardGSMMobileStation(MS)withminimumimpactontheMS.TheimpactwouldideallybelimitedtoanupgradeoftheMEandSIMsoftware.Thiscanonlybeaccomplishediftheradiointerfaceofthecordlesssystemisidentical,orverysimilar,tothestandardGSMradiointerface.SIST EN 302 403 V8.0.1:2003

ETSIETSIEN302403V8.0.1(2000-10)7(GSM02.56version8.0.1Release1999)1ScopeThescopeofthepresentdocumentistodescribetheServiceaspectsofaGSMCordlessTelephonySystem(CTS),whichprovidesthepossibilityforusersofGSMterminalstohavecordlessaccesstoafixednetwork,suchasPSTN/ISDNoraradionetworksuchasGSM.Duetothetimeconstraintstohaveafirstspecificationreadyformarketneeds,aphasedapproachisnecessary.Thefirstphaseaimsprimarilyatanapplicationsupportingthespeechteleservice(includingDTMFsupport)inaresidentialsinglecellenvironment.Thefocusisontherequirementsnecessarytoelaboratetheradiointerfaceandthesecurityaspectsforsuchanapplication.TonotpreventorimpedetheevolutionofCTStoadditionalservicesandfunctions,laterphasesmayhavetobeconsideredwhennowdefiningthemeanstofulfiltheabovementionedrequirementsforthefirstphaseofCTS.Therefore,additionalsupportontheCTSradiointerfaceforlaterphaseservices(e.g.SMS,subscriberauthenticationandGSMsupplementaryservices),isincludedalreadyinCTSPhase1,providedthatsuchservicesareclearlydefined.OtherexpectedservicesandfunctionsinlaterphasesareincludedinannexA.ThestandardisationofthephysicallayersoftheGSM-CTSfixednetworkinterfaceisnotinthescopeofthepresentdocument.However,considerationmayneedtobegiventocommunicationofapplicationdatabetweenCTSandPLMNviathefixednetwork.2ReferencesThefollowingdocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthepresentdocument.• Referencesareeitherspecific(identifiedbydateofpublication,editionnumber,versionnumber,etc.)ornon-specific.• Foraspecificreference,subsequentrevisionsdonotapply.• Foranon-specificreference,thelatestversionapplies.• Anon-specificreferencetoanETSshallalsobetakentorefertolaterversionspublishedasanENwiththesamenumber.• ForthisRelease1999document,referencestoGSMdocumentsareforRelease1999versions(version8.x.y).[1]GSM01.04:"Digitalcellulartelecommunicationsystem(Phase2+);Abbreviationsandacronyms".[2]GSM02.07:"Digitalcellulartelecommunicationssystem(Phase2+);MobileStations(MS)features".[3]GSM02.09:"Digitalcellulartelecommunicationssystem(Phase2+);Securityaspects".[4]GSM02.81:"Digitalcellulartelecommunicationsystem(Phase2+);LineidentificationSupplementaryServices-Stage1".[5]GSM02.96:"Digitalcellulartelecommunicationsystem(Phase2+);NameidentificationSupplementaryServices-Stage1".[6]GSM03.40:"Digitalcellulartelecommunicationssystem(Phase2+);ShortMessageService(SMS)".[7]ETS300111(1992):"IntegratedServicesDigitalNetwork(ISDN);Telephony3,1kHzteleservice,servicedescription".[8]ETS300109(1992):"IntegratedServicesDigitalNetwork(ISDN);Circuit-mode64kbit/s8kHzstructuredbearerservicecategoryusableforspeechinformationtransfer,servicedescription".SIST EN 302 403 V8.0.1:2003

ETSIETSIEN302403V8.0.1(2000-10)8(GSM02.56version8.0.1Release1999)[9]ETS300110(1992):"IntegratedServicesDigitalNetwork(ISDN);Circuit-mode64kbit/s8kHzstructuredbearerservicecategoryusablefor3,1kHzaudioinformationtransfer,servicedescription".[10]EN301144-1(V1.1):"TheSignallingapplicationforthemobilitymanagementserviceonthealphainterface;Part1:Protocolspecification".[11]GSM02.30:"Digitalcellulartelecommunicationsystem(Phase2+);ManMachineInterface(MMI)oftheMobileStation(MS)".3Definitionsandabbreviations3.1DefinitionsForthepurposesofthepresentdocument,thefollowingtermsanddefinitionsapply:FPEnrolment:procedurewhereaCTS-FPisloadedwithdatanecessarytoobtainCTSoperation.AfterthisprocedureCTSoperationmaycommence.MSEnrolment:procedurewhereaCTS-MSisassociatedforthefirsttimewithaCTS-FP.AfterthisprocedureCTS-MShasaccesstothisCTS-FP.Attachment:procedurewhereanMSattachestoacertainCTS-FP.Whenattached,itispossibletomakeandreceivecallsviatheCTS-FP.TheCTS-MSmusthavebeeninitialisedcorrectlytotheCTS-FPbeforeattachmentcantakepart.GenericFrequencyList(GFL):GenericFrequencyList(GFL)containsallabsoluteradiofrequencychannelnumbers(ARFCN),asdefinedinGSM05.05,onwhichtheCTS-FPisallowedtooperate.TheCTS-FPwillneverusefrequencieswhicharenotlistedintheGFL.CTSMobileStation:GSMMSwithCTScapability.CTSFixedPart:CTS-FPisadevicewhichoffersapersonnalcordlesscoverageandactsasalinkbetweentheCTS-MSandthefixednetworkortheGSMnetwork.GSMOperator:GSMoperatoristheoperatorwhoprovidesGSMcellularservicetotheMS.CTSlicenceexemptfrequencies:frequencybandthatmaybeallocatedbynationalregulatortoCTSusageoutsideofaGSMlicenceallocatedtoaGSMoperator.CTSoperator:CTSoperatoristheoperatorwhoprovidestheGFLtotheCTS-FP.TheCTSoperatormaybethesamethantheGSMoperator.FP-SIM:FP-SIMistheSIMcardinsertedintheCTS-FP,whichmaterialisedtheCTSsubscription.TheFP-SIMbelongstotheCTSoperator.CTSsubscription:whenaGSMlicensedbandisused,therighttouseaCTSoperator'sfrequencyspectrumforcommunicationbetweenaCTS-FPandCTS-MS(s).CTS-FPowner:personwhohastheCTS-FPcontrolandmayauthoriseMSEnrolment.CTSuser:personwhohasaCTS-MSwhichisallowedtodoCTSoperations.CTS-MSlocalnumber:numberintherangeof0-99optionallyassignedtotheCTS-MSatenrolment.ThisnumberisusedforCTSinternalcalls.CTS-Roaming:rightforanadditionalCTS-MStobeenrolledtoaCTS-FPwhichisinitialisedtoanoperatorotherthantheHPLMNoperatoroftheadditionalCTS-MS.SIST EN 302 403 V8.0.1:2003

ETSIETSIEN302403V8.0.1(2000-10)9(GSM02.56version8.0.1Release1999)3.2AbbreviationsInadditiontothosebelow,abbreviationsusedinthepresentdocumentarelistedinGSM01.04.CTSCordlessTelephonySystemCTS-FPCordlessTelephonySystem-FixedPartCTS-MSCordlessTelephonySystem-MobileStationFP–SIMFixedPart–SubscriberIdentityModuleGFLGenericFrequencyListIFPEIInternationalFixedPartEquipmentIdentityISDNIntegratedServicesDigitalNetworkMSMobileStationPSTNPublicSwitchedTelephoneNetworkSMS-MOShortMessageService-MobileOriginatedSMS-MTShortMessageService-MobileTerminated4Description4.1SystemoverviewTheGSMCordlessTelephoneSystem(GSM-CTS)describedinthepresentdocumentisaradiocommunicationssystembasedonaGSM-compatiblecellularinterfacebetweenaprivateradiobasestationcalledCTSFixedPart(CTS-FP)andaCTSmobilestation(CTS-MS).TheCTS-FPisconnectedeitherviaawirelinetothePSTN/ISDNnetworkorviaaradioconnectiontoaGSMnetwork.Whenconnectedtothefixednetwork,theCTS-FPwillbecompliantwiththeexistingfixednetworkstandards(e.g.supportthetelephony3,1kHzteleservice(see[7]),thespeechbearerservice(see[8])andthe3,1kHzaudiobearerservice(see[9]incaseofanISDNCTS-FPandtherelevantnationalstandardsincaseofPSTNCTS-FP).ThereisnodirectradiocommunicationbetweendifferentCTS-FPs.However,thisdoesnotprecludeindirectcommunication,e.g.viathefixednetworkorviatheMS.WhenconnectedtoaGSMnetwork,theCTS-FPiscompliantwiththeexistingETSIstandardsapplicabletoaGSMmobile.FromtheGSMnetworkpointofview,theCTS-FPisseenasastandardGSMmobileincludingastandardGSMSIMcard.(i.e.theCTS-FPmayinclude2SIMcards:onefortheGSMsubscriptionandonefortheCTSsubscription).AnillustrationoftheCTSconceptisshowninfigure1.DuetothelowtransmitpoweroftheCTS-FP,thecoverageareaisrestrictedandlimited.WhentheCTS-MScomesinrangeoftheCTS-FP,itmayattachtotheCTS.Whenconnectedtothefixednetwork,fromthenon,theusercanmakeandacceptcallsdirectlyviathePSTNwithouttheinterventionofthepubliccellularnetwork.Whenattached,theMScheckswhetheritisstillinrangeoftheCTSandwhetheritispaged.Asanoption,theMSmaysimultaneouslyworkinboththecellularandthecordlessmode,inasocalledparallelmode,i.e.beattachedbothintheGSMPLMNandtheCTS.WhentheMScomesoutofrangeoftheCTSitmayswitchtotheGSMmode.Thisswitchshallbeindicatedtotheuser.WhentheCTS-MSisineitherCTSmodeorGSMmodeandissearchingforapotentialchanneltoattachwithintheothermode,itshallbeabletorespondtopagingmessagesfromthemodeinwhichitiscurrentlyattached.TheradiointerfacebetweentheCTS-FPandtheCTS-MSisamodifiedGSMinterface.Thecarrierfrequenciesusedarethesameasassignedforcellularservice.Thesecarrierfrequenciescanbepartofalicenceexemptbandoralicensedband.WhenCTS-FPoperatesinalicencedband:-thesefrequenciescanbereservedbytheoperatorforGSM-CTSusage,orcanbesharedwiththecellularsystem.Ineverycase,however,theGSMoperatorcontrols,onanareaandtimebasis,onwhichfrequenciestheCTSisallowedtooperate.Incaseofco-existenceinthesameoperatingarea,aprocedureshallbedeployedtominimiseinterferencebetweenGSMPLMNandCTSusers.NOTE:ThefrequenciesusedforCTScouldbeinanyfrequencybanddefinedforGSM,i.e.GSM900,DCS1800orPCS1900.ThisappliesbothtotheCTS-FPandtheCTS-MS.SIST EN 302 403 V8.0.1:2003

ETSIETSIEN302403V8.0.1(2000-10)10(GSM02.56version8.0.1Release1999)Thequalityofservice(e.g.serviceaccessibility,callset-uptime,bitratefordataservices)ofthe'GSMonly'subscribersshallremainunaffectedbytheintroductionofCTS.MeanstoguaranteethatthequalityofserviceofGSMsubscribersdoesnotdegradeduetoCTSintroductionhavetobedefined.SincetheMSusesthesamefrequencyspectrumbothforthecellularmodeandthecordlessmode,theMEhardwarecanbereused.TheintentionisthathardwaremodificationsintheradiotransceiverofastandardGSMMEshouldnotbenecessary.ItisalsoarequirementthattheintroductionofCTSshallnotdestabiliseanyexistingGSMmobileequipmentordegradethemobileequipment'sdedicated(e.g.incall)oridlemodeperformance.Whenalicensedbandisused:-theCTSoperatorcanadministerallCTS-FPsandthecorrespondingCTS.WhentheCTSisinitialised,therequiredoperationparametersaredownloadedintotheCTS.ThiscaneitherbedoneviathefixednetworkorviatheGSMradiointerface.CTSFixedPartGSMPLMNGSMCTSGSMBTSFigure1:ConceptfortheGSMCTSfunctionalitywhenconnectedtothePSTN4.2Serviceaspects4.2.1GeneralInthefirstphaseofCTSanapplicationforresidentialenvironmentservingonecellisintended.Theservicesandfeaturestobesupportedrelatetothisassumption.SIST EN 302 403 V8.0.1:2003

ETSIETSIEN302403V8.0.1(2000-10)11(GSM02.56version8.0.1Release1999)4.2.2UseraspectsTheuseroftheCTSshallberequiredtoperformasimpleinstallationprocessinordertoinitialisetheCTSoperation.Thisprocessshallinclude:• connectionoftheCTS-FPtothepowersupplyandtoeitherthefixednetworkortheGSMnetworkinterface;• enrolmentoftheCTS-FP(CTS-FPenrolment).AstheCTS-FPshallnotbeGSMoperatorspecific,ithastobeenrolledwithoperationspecificdata,e.g.alistofallowedfrequencies(GenericFrequencyListGFL);• enrolmentofoneorseveralCTS-MSswiththeCTS-FP(CTS-MSenrolment).Onceinitialised,CTSoperationshallnotrequireanyspecificactionoftheusertomaintaintheoperationaslongastheCTS-FPisnotde-activated(seeclause6).TohaveservicegrantedbytheCTS-FP,aCTS-MSshallattachattheCTS-FP.Inordertoattach,aCTS-MShastobeenrolledwiththeCTS-FP,theuserhastobringtheCTS-MSinrangeoftheCTS-FPandtheappropriateoperationmodehastobeselected(seesubclause4.2.5.1).4.2.3SubscriptionsTheCTS-FPownershallhaveavalidCTSsubscriptionfromaCTSoperator.ThissubscriptionismaterialisedbyanFP-SIM.ItgivestherighttotheCTS-FPownertoinitialisetheCTS-FPandenrollCTS-MSsunderconditionsdefinedbytheCTSoperator.InexchangeofasubscriptiontoaCTSoperator,theCTS-FPownerwillreceiveaCTS-GFLintheCTS-FP.TheuseroftheGSMCTSserviceshallhaveasubscriptionwithaGSMoperator,whichallowsCTSservice.ThisCTSauthorisationmaybegiventoalltheCTS-MSsofaPLMNormaybelinkedtoaspecificservicesubscriptiongivenbytheGSMoperator.BydefaulttheCTS-MSarenotallowedtodoCTSoperations.TheuseofaGSMsubscriptionfor'CTSonly'serviceisnotprecluded.CorrespondinginformationmaybestoredintheSIM.InordertobeabletousetheCTSserviceonthefixednetwork,asubscriptiontothefixednetworkisalsorequired.WhenconnectedtotheGSMnetwork,thefixednetworksubscriptionisreplacedbyaGSMsubscriptionandtheCTS-FPshallincludeaGSMSIMcardcorrespondingtothisGSMsubscription.Thefixednetwork,GSMandCTSsubscriptionsmaybeindependentofeachother.HoweveratCTS-FPenrolment(seesubclause5.1)theCTS-FPmayobtainoperationdataspecifictotheCTSoperator,theuseroftheCTSservicehassubscribedto,thustheCTS-FPoperationmaybetiedtoaspecificGSMoperator.TheCTS-FPisnormallynotsubscribedto,itistheusers'property.AftertheCTSservicesubscriptiontooneoperatoriscancelled,itshallbepossibletousethesameCTS-FPforaCTSservicesubscriptiontoanotheroperator.4.2.3.1CTS-roamingaspectsACTS-FPownermayonlyhaveoneCTSsubscriptiontoasingleCTSoperator.ThisoperatordefineswhichCTS-MSsareallowedtoenrollontoaparticularCTS-FP.SeveralcontrollevelsareofferedbytheCTS:-uncontrolledroaming:allCTS-MSfromanyGSMoperatorareallowedtoenrolontheCTS-FPwithoutCTS-operatorcontrol;-noroaming:theCTS-operatorandtheGSMoperatorarethesameandonlytheCTS-MSsfromtheCTSoperatorareallowedtoattachontheCTS-FP;-controlroaming:onacasebycasebasis,theCTS-operatorcontrolsCTS-MSenrolmentusingCTS-MSIMSI.Inanycases,theCTS-FPownerauthorisationismandatoryforCTS-MSenrolment.NOTE:CTS-roaminghasnoimpactonCTS-FPoperationalmodedefinedbytheCTS-operator(e.g.frequencymanagement).SIST EN 302 403 V8.0.1:2003

ETSIETSIEN302403V8.0.1(2000-10)12(GSM02.56version8.0.1Rele
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