ETSI EN 300 952 V7.0.2 (1999-12)

Digital cellular telecommunications system (Phase 2+) (GSM); Call Forwarding (CF) supplementary services; Stage 3 (GSM 04.82 version 7.0.2 Release 1998)

REN/SMG-030482Q7

Digitalni celični telekomunikacijski sistem (faza 2+) – Dopolnilna storitev: podaja klica (CF) – Stopnja 3 (GSM 04.82, različica 7.0.2, izdaja 1998)

General Information

• Status: Published
• Publication Date: 13-Dec-1999
• Technical Committee: SMG 3 - Network Aspects
• Current Stage: 12 - Completion
• Due Date: 03-Dec-1999
• Completion Date: 14-Dec-1999
• Ref Project: SIST EN 300 952 V7.0.2:2003 - Digital cellular telecommunications system (Phase 2+) (GSM); Call Forwarding (CF) supplementary services; Stage 3 (GSM 04.82 version 7.0.2 Release 1998)

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Digital cellular telecommunications system (Phase 2+) (GSM); Call Forwarding (CF) supplementary services; Stage 3 (GSM 04.82 version 7.0.2 Release 1998)33.070.50Globalni sistem za mobilno telekomunikacijo (GSM)Global System for Mobile Communication (GSM)ICS:Ta slovenski standard je istoveten z:EN 300 952 Version 7.0.2SIST EN 300 952 V7.0.2:2003en01-december-2003SIST EN 300 952 V7.0.2:2003SLOVENSKI
STANDARD



SIST EN 300 952 V7.0.2:2003



ETSIEN300952V7.0.2(1999-12)EuropeanStandard(Telecommunicationsseries)Digitalcellulartelecommunicationssystem(Phase2+);CallForwarding(CF)supplementaryservices;Stage3(GSM04.82version7.0.2Release1998)GLOBALSYSTEMFORMOBILECOMMUNICATIONSRSIST EN 300 952 V7.0.2:2003



ETSIETSIEN300952V7.0.2(1999-12)2(GSM04.82version7.0.2Release1998)ReferenceREN/SMG-030482Q7(8tc03i1c.PDF)KeywordsDigitalcellulartelecommunicationssystem,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,thereferenceshouldbetheprintingonETSIprintersofthePDFversionkeptonaspecificnetworkdrivewithinETSISecretariat.CopyrightNotificationNopartmaybereproducedexceptasauthorizedbywrittenpermission.Thecopyrightandtheforegoingrestrictionextendtoreproductioninallmedia.©EuropeanTelecommunicationsStandardsInstitute1999.Allrightsreserved.SIST EN 300 952 V7.0.2:2003



ETSIETSIEN300952V7.0.2(1999-12)3(GSM04.82version7.0.2Release1998)ContentsIntellectualPropertyRights.5Foreword.50Scope.60.1References.60.2Abbreviations.80.3Crossphasecompatibility.81CallForwardingUnconditional(CFU).81.1Normaloperation.81.1.1Servedmobilesubscriberside.81.1.2Forwarded-tomobilesubscriberside.81.1.3Callingmobilesubscriberside.91.2Registration.91.2.1Registrationbytheservedmobilesubscriber.91.3Erasure.101.3.1Erasurebytheservedmobilesubscriber.101.4Activation.111.5Deactivation.121.6Interrogation.121.7Crossphasecompatibility.141.7.1Networkonlysupportsprotocolversion1controlofSSbythesubscriber.141.7.2MSonlysupportsprotocolversion1controlofSSbythesubscriber.142CallForwardingonmobilesubscriberBusy(CFB).142.1Normaloperation.142.1.1Servedmobilesubscriberside.142.1.2Forwarded-tomobilesubscriberside.152.1.3Callingmobilesubscriberside.162.2Registration.162.2.1Registrationbytheservedmobilesubscriber.162.3Erasure.172.3.1Erasurebytheservedmobilesubscriber.172.4Activation.182.5Deactivation.192.6Interrogation.202.7Crossphasecompatibility.222.7.1Networkonlysupportsprotocolversion1controlofSSbythesubscriber.222.7.2MSonlysupportsprotocolversion1controlofSSbythesubscriber.223CallForwardingonNoReply(CFNRy).223.1Normaloperation.223.1.1Servedmobilesubscriberside.223.1.2Forwarded-tomobilesubscriberside.233.1.3Callingmobilesubscriberside.233.2Registration.233.2.1Registrationbytheservedmobilesubscriber.243.3Erasure.243.3.1Erasurebytheservedmobilesubscriber.253.4Activation.253.5Deactivation.263.6Interrogation.263.7Crossphasecompatibility.283.7.1Networkonlysupportsprotocolversion1controlofSSbythesubscriber.283.7.2MSonlysupportsprotocolversion1controlofSSbythesubscriber.28SIST EN 300 952 V7.0.2:2003



ETSIETSIEN300952V7.0.2(1999-12)4(GSM04.82version7.0.2Release1998)4CallForwardingonmobilesubscriberNotReachable(CFNRc).284.1Normaloperation.284.1.1Servedmobilesubscriberside.284.1.2Forwarded-tomobilesubscriberside.294.1.3Callingmobilesubscriberside.294.2Registration.304.2.1Registrationbytheservedmobilesubscriber.304.3Erasure.304.3.1Erasurebytheservedmobilesubscriber.314.4Activation.314.5Deactivation.324.6Interrogation.324.7Crossphasecompatibility.344.7.1Networkonlysupportsprotocolversion1controlofSSbythesubscriber.344.7.2MSonlysupportsprotocolversion1controlofSSbythesubscriber.34AnnexA(informative):ChangeRequestHistory.35History.36SIST EN 300 952 V7.0.2:2003



ETSIETSIEN300952V7.0.2(1999-12)5(GSM04.82version7.0.2Release1998)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)hasbeenproducedbyTechnicalCommitteeSpecialMobileGroup(SMG).Thepresentdocumentspecifiestheproceduresusedattheradiointerfacefor:normaloperation,registration,erasure,activation,deactivation,interrogation,andnetworkinvocationofthecallofferingsupplementaryserviceswithinthedigitalcellulartelecommunicationssystem.ThespecificationfromwhichthepresentdocumenthasbeenderivedwasoriginallybasedonCEPTdocumentation,hencethepresentationofthepresentdocumentmaynotbeentirelyinaccordancewiththeETSI/PNErules.ThecontentsofthepresentdocumentissubjecttocontinuingworkwithinSMGandmaychangefollowingformalSMGapproval.ShouldSMGmodifythecontentsofthepresentdocumentitwillbere-releasedwithanidentifyingchangeofreleasedateandanincreaseinversionnumberasfollows:Version7.x.ywhere:7indicatesRelease1998ofGSMPhase2+xtheseconddigitisincrementedforallchangesofsubstance,i.e.technicalenhancements,corrections,updates,etc.ythethirddigitisincrementedwheneditorialonlychangeshavebeenincorporatedinthespecification.NationaltranspositiondatesDateofadoptionofthisEN:3December1999DateoflatestannouncementofthisEN(doa):31March2000DateoflatestpublicationofnewNationalStandardorendorsementofthisEN(dop/e):30September2000DateofwithdrawalofanyconflictingNationalStandard(dow):30September2000SIST EN 300 952 V7.0.2:2003



ETSIETSIEN300952V7.0.2(1999-12)6(GSM04.82version7.0.2Release1998)0ScopeThepresentdocumentspecifiestheproceduresusedattheradiointerface(referencepointUmasdefinedinGSM04.02)fornormaloperation,registration,erasure,activation,deactivation,interrogationandnetworkinvocationofcallofferingsupplementaryservices.Provisionandwithdrawalofsupplementaryservicesisanadministrativematterbetweenthemobilesubscriberandtheserviceproviderandcausenosignallingontheradiointerface.InGSM04.10,thegeneralaspectsofthespecificationofsupplementaryservicesatthelayer3radiointerfacearegiven.GSM04.80specifiestheformatsandcodingforthesupplementaryservices.DefinitionsanddescriptionsofsupplementaryservicesaregiveninGSM02.04andGSM02.8xandGSM02.9x-series.GSM02.82isrelatedspeciallytocallofferingsupplementaryservices.TechnicalrealizationofsupplementaryservicesisdescribedinGSM03.11andGSM03.8xandGSM03.9x-series.GSM03.82isrelatedspeciallytocallofferingsupplementaryservices.TheproceduresforCallControl,MobilityManagementandRadioResourcemanagementatthelayer3radiointerfacearedefinedinGSM04.07andGSM04.08.Thefollowingsupplementaryservicesbelongtothecallofferingsupplementaryservicesandaredescribedinthepresentdocument:-Callforwardingunconditional(CFU)(clause1);-Callforwardingonmobilesubscriberbusy(CFB)(clause2);-Callforwardingonnoreply(CFNRy)(clause3);-Callforwardingonmobilesubscribernotreachable(CFNRc)(clause4).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]GSM02.01:"Digitalcellulartelecommunicationssystem(Phase2+);PrinciplesoftelecommunicationservicessupportedbyaGSMPublicLandMobileNetwork(PLMN)".[3]GSM02.04:"Digitalcellulartelecommunicationssystem(Phase2+);Generalonsupplementaryservices".[4]GSM02.81:"Digitalcellulartelecommunicationssystem(Phase2+);Lineidentificationsupplementaryservices-Stage1".[5]GSM02.82:"Digitalcellulartelecommunicationssystem(Phase2+);CallForwarding(CF)supplementaryservices-Stage1".SIST EN 300 952 V7.0.2:2003



ETSIETSIEN300952V7.0.2(1999-12)7(GSM04.82version7.0.2Release1998)[6]GSM02.83:"Digitalcellulartelecommunicationssystem(Phase2+);CallWaiting(CW)andCallHold(HOLD)supplementaryservices-Stage1".[7]GSM02.84:"Digitalcellulartelecommunicationssystem(Phase2+);MultiParty(MPTY)supplementaryservices-Stage1".[8]GSM02.85:"Digitalcellulartelecommunicationssystem(Phase2+);ClosedUserGroup(CUG)supplementaryservices-Stage1".[9]GSM02.86:"Digitalcellulartelecommunicationssystem(Phase2+);AdviceofCharge(AoC)supplementaryservices-Stage1".[10]GSM02.88:"Digitalcellulartelecommunicationssystem(Phase2+);CallBarring(CB)supplementaryservices-Stage1".[11]GSM02.90:"Digitalcellulartelecommunicationssystem(Phase2+);UnstructuredSupplementaryServiceData(USSD)-Stage1".[12]GSM03.02:"Digitalcellulartelecommunicationssystem(Phase2+);Networkarchitecture".[13]GSM03.11:"Digitalcellulartelecommunicationssystem(Phase2+);Technicalrealizationofsupplementaryservices".[14]GSM03.81:"Digitalcellulartelecommunicationssystem(Phase2+);Lineidentificationsupplementaryservices-Stage2".[15]GSM03.82:"Digitalcellulartelecommunicationssystem(Phase2+);CallForwarding(CF)supplementaryservices-Stage2".[16]GSM03.83:"Digitalcellulartelecommunicationssystem(Phase2+);CallWaiting(CW)andCallHold(HOLD)supplementaryservices-Stage2".[17]GSM03.84:"Digitalcellulartelecommunicationssystem(Phase2+);MultiParty(MPTY)supplementaryservices-Stage2".[18]GSM03.85:"Digitalcellulartelecommunicationssystem(Phase2+);ClosedUserGroup(CUG)supplementaryservices-Stage2".[19]GSM03.86:"Digitalcellulartelecommunicationssystem(Phase2+);AdviceofCharge(AoC)supplementaryservices-Stage2".[20]GSM03.88:"Digitalcellulartelecommunicationssystem(Phase2+);CallBarring(CB)supplementaryservices-Stage2".[21]GSM03.90:"Digitalcellulartelecommunicationssystem(Phase2+);Unstructuredsupplementaryservicesoperation-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+);Mobileradiointerfacelayer3Supplementaryservicesspecification;Generalaspects".[26]GSM04.80:"Digitalcellulartelecommunicationssystem(Phase2+);Mobileradiointerfacelayer3supplementaryservicesspecificationFormatsandcoding".SIST EN 300 952 V7.0.2:2003



ETSIETSIEN300952V7.0.2(1999-12)8(GSM04.82version7.0.2Release1998)0.2AbbreviationsAbbreviationsusedinthepresentdocumentarelistedinGSM01.04.0.3CrossphasecompatibilityForthefollowingsupplementaryservices,anumberofchangesexistbetweenthepresentdocumentandtheprotocolversion1specification:-Callforwardingunconditional;-Callforwardingonmobilesubscriberbusy;-Callforwardingonnoreply;-Callforwardingonmobilesubscribernotreachable.Forthesesupplementaryservices,themainbodyofthepresentdocumentassumesthatallnetworkentitiescomplywiththisversionoftheservice.Ineachcase,anadditionalsubclause(subclausex.7)definestheadditionalrequirementsforwhenoneormorenetworkentitiesortheMScomplieswiththeprotocolversion1specificationsforthesupplementaryserviceprocedures.1CallForwardingUnconditional(CFU)1.1Normaloperation1.1.1ServedmobilesubscribersideWhencallforwardingunconditionalisactive,allincomingcallsforthespecifiedbasicservice(s)willbeforwardedwithoutbeingofferedtotheservedmobilesubscriber.WhenCFUisactive,theabilityoftheservedmobilesubscribertooriginatecallsisnotaffected.However,aNotifySSoperationcontainingtheSS-StatusindicatingthatCFUiscurrentlyactiveandoperativewillbesenttotheservedmobilesubscribereachtimeanoutgoingcallismade,seefigure1.1.MSNetworkSETUP------------------------------------------------------------------------------------------------------------------------>e.g.ALERTING<------------------------------------------------------------------------------------------------------------------------Facility(Invoke=NotifySS(CFU,SS-Status))Figure1.1:Notificationtotheservedmobilesubscriberthatcallforwardingisactive1.1.2Forwarded-tomobilesubscribersideTheforwarded-tomobilesubscriberwillreceiveaNotifySSoperationcontainingtheSS-Notificationindicatingthattheincomingcallisaforwardedcall.Whenavailable,theSS-Codeoftheinvokedforwardingserviceisalsoincluded,seefigure1.2.WhenmultipleforwardingoccursthevalueoftheSS-Codeshallrelatetothelastinvokedforwardingservice.Inadditiontheforwarded-tomobilesubscriberwillreceivetheredirectingpartyBCDnumberandoptionally,aredirectingpartysubaddress.TheredirectingpartyBCDnumberinformationelementismadeupofanumberofinformationunitsasindicatedinGSM04.08.SIST EN 300 952 V7.0.2:2003



ETSIETSIEN300952V7.0.2(1999-12)9(GSM04.82version7.0.2Release1998)Inadditiontoorinsteadoftheredirectingparty'sdigits,thesubscribermaybegiventhefollowinginformation:-screeningindicator;-presentationindicator.IndicatorvaluesaregiveninGSM04.08.TheredirectingpartysubaddressinformationelementismadeupofanumberofinformationunitsasindicatedinGSM04.08.MSNetworkSETUP<------------------------------------------------------------------------------------------------------------------------Facility(Invoke=NotifySS(CFU,SS-Notification))RedirectingpartyBCDnumber(screeningindicator,presentationindicator,redirectingpartydigits),RedirectingpartysubaddressNOTE:IfthespecificcallforwardingserviceisnotknownthecommonSS-CodeforallforwardingSSwillbeused.Figure1.2:Notificationtotheforwarded-tomobilesubscriberthattheincomingcallisaforwardedcall1.1.3CallingmobilesubscribersideAsasubscriptionoption,theservedmobilesubscribercanrequestthatthecallingmobilesubscriberreceivesaNotifySSoperationcontainingtheSS-Notificationindicatingthatthecallhasbeenforwarded.Whenavailable,theSS-Codeoftheinvokedforwardingserviceisalsoincluded,seefigure1.3.MSNetworkSETUP------------------------------------------------------------------------------------------------------------------------>FACILITY<------------------------------------------------------------------------------------------------------------------------Facility(Invoke=NotifySS(CFU,SS-Notification))NOTE:IfthespecificcallforwardingserviceisnotknownthecommonSS-CodeforallforwardingSSwillbeused.Figure1.3:Notificationtothecallingmobilesubscriberthatthecallisforwarded1.2RegistrationThefollowinginformationhastoberegisteredinthenetwork:-theForwardedToNumberwhichmaybeaccompaniedbyaForwardedToSubAddress;-informationastowhetherallcallsorallcallsofaspecificbasicserviceshouldbeforwarded.1.2.1RegistrationbytheservedmobilesubscriberACFUregistrationrequestfromamobileusershallincludetheSS-CodeoftheforwardingservicetoberegisteredandpossiblytheBasicServiceCodetherequestappliesto.IftheBasicServiceCodeisnotincluded,therequestappliestoallbasicservices.Iftheregistrationissuccessful,theCFUservicewillberegisteredandactivated.ThenetworkwillthensendareturnresultindicatingacceptanceoftherequestincludingtheForwardedToNumberandpossiblytheBasicService(group)SIST EN 300 952 V7.0.2:2003



ETSIETSIEN300952V7.0.2(1999-12)10(GSM04.82version7.0.2Release1998)CodetowhichCFUisregistered.Iftherequestappliedtoasingleelementarybasicservicegroup,theForwardedToNumbermaybeaccompaniedbyaForwardedToSubAddress.Inothercases,theresultshallnotcontainaForwardedToSubAddress.TheresultmayalsocontainanSS-Statusparameter.IftheMSdoesnotsendanSSVersionIndicatorintheinvocationrequestthenthenetworkshallsendanSS-Statusintheresult.IftheMSdoessendanSSVersionIndicatorintheinvocationrequestthentheinclusionofSS-Statusintheresultisoptional.IftheSS-Statusisincludedthenetworkshallsetittoreflectthestateoftheservice.TheMSshallignorethecontentsoftheSS-Statusparameterifoneisreceived.Seefigure1.4.NotethattheuseofSS-Statusistoprovidebackwardscompatibilitywithphase1.Ifthesystemcannotacceptaregistrationrequest,acorrespondingerrorindicationisreturnedtotheservedmobilesubscriberthatCFUregistrationwasnotsuccessful.ErrorvaluesarespecifiedinGSM04.80.MSNetworkREGISTER------------------------------------------------------------------------------------------------------------------------>Facility(Invoke=RegisterSS(CFU,BasicServiceCode,ForwardedToNumber,ForwardedToSubAddress))RELEASECOMPLETE<------------------------------------------------------------------------------------------------------------------------Facility(Returnresult=RegisterSS(BasicServiceCode,SS-Status,ForwardedToNumber,ForwardedToSubAddress))RELEASECOMPLETE<------------------------------------------------Facility(Returnerror(Error))RELEASECOMPLETE<------------------------------------------------Facility(Reject(Invoke_problem))NOTE:IfBasicServiceCodeisnotincludeditappliestoallbasicservices.TheForwardedToNumbermaybeaccompaniedbyaForwardedToSubAddress.TheSS-Statusmaynotbeincludedinallcases,seetext.Figure1.4:RegistrationofcallforwardingunconditionalWhenregisteringcallforwarding,theSS-Codemayindicatethecodefor"allforwardingSS".Inthiscase,ifthesubscriberhasCFUprovisioned,thereturnresultshallcontaintheinformationforCFU.IfthesubscriberdoesnothaveCFUprovisioned,thereturnresultshallcontaintheinformationforanyconditionalcallforwardingserviceswhichthesubscriberhasprovisioned.1.3ErasureApreviousregistrationcanbeerasedinoneofthreeways:-thesubscribercanspecificallyeraseapreviousregistrationwithanappropriatecontrolprocedure;-thesubscribercanregisterinformationforCFUforaspecificbasicservicegrouptoanotherdirectorynumber,thuscausingthepreviousregistrationofCFUtobeoverridden;-allinformationiserasedasaresultofwithdrawalofthesupplementaryservice(administrativehandling).1.3.1ErasurebytheservedmobilesubscriberIftheerasureissuccessful,theCFUservicewillbeerased(andautomaticallydeactivated).Thenetworkwillthensendareturnresultindicatingacceptanceoftherequest.Theresultisformattedaccordingtotheoptionsshownbelow:-TheresultincludestheBasicService(group)CodeforwhichCFUwaserased.TheresultmayalsocontainanSS-Statusparameter.IftheMSdoesnotsendanSSVersionIndicatorintheinvocationrequestthenthenetworkshallsendanSS-Statusintheresult.IftheMSdoessendanSSVersionIndicatorintheinvocationrequestthentheinclusionofSS-Statusintheresultisoptional.IftheSS-Statusisincludedthenetworkshallsetittoreflectthestateoftheservice.TheMSshallignorethecontentsoftheSS-Statusparameterifoneisreceived.Seefigure1.5.SIST EN 300 952 V7.0.2:2003



ETSIETSIEN300952V7.0.2(1999-12)11(GSM04.82version7.0.2Release1998)NotethattheuseofSS-StatusistoprovidebackwardscompatibilitywithGSMPhase1.-IftherequestdidnotincludeaBasicServiceCode,andtheerasurewassuccessfulforallbasicservices,thenetworkmaysendanemptyreturnresulttotheMS.ThisoptionapplieswhetherornotanSSVersionIndicatorisreceivedfromtheMS.Ifthenetworkcannotaccepttheerasurerequest,thestatusofCFUinthenetworkremainsunchanged.AnerrorindicationwillthenbereturnedtotheservedmobilesubscriberthaterasureofCFUwasunsuccessful.ErrorvaluesarespecifiedinGSM04.80.MSNetworkREGISTER------------------------------------------------------------------------------------------------------------------------>Facility(Invoke=EraseSS(CFU,BasicServiceCode))RELEASECOMPLETE<------------------------------------------------------------------------------------------------------------------------Facility(Returnresult=EraseSS(BasicServiceCode,SS-Status))RELEASECOMPLETE<-----------------------------------------------Facility(Returnerror(Error))RELEASECOMPLETE<-----------------------------------------------Facility(Reject(Invoke_problem))NOTE:IfBasicServiceCodeisnotincludeditappliestoallbasicservices.TheSS-Codemayalsoindicatethecodefor"allforwardingSS".TheSS-Statusmaynotbeincludedinallcases,seetext.Figure1.5:Erasureofcallforwardingunconditional1.4ActivationAnexplicitCFUactivationrequestfromamobileusershallcontainthesupplementaryservicetobeactivatedandpossiblythebasicservicegrouptherequestappliesto.IfabasicservicegroupisnotincludedintheactivationrequesttherequestappliestoallbasicservicesagainstwhichaCFUforwarded-tonumberisregistered.Theusershallreceiveappropriatenotificationofacceptance,rejectionorpartialacceptanceoftheCFUactivationrequest,seefigure1.6.Errorvalues(whichareusedinthetwolattersituations)arespecifiedinGSM04.80.MSNetworkREGISTER------------------------------------------------------------------------------------------------------------------------>Facility(Invoke=ActivateSS(CFU,BasicServiceCode))RELEASECOMPLETE<------------------------------------------------------------------------------------------------------------------------Facility(Returnresult=ActivateSS(SS-Status))RELEASECOMPLETE<-----------------------------------------------Facility(Returnerror(Error))RELEASECOMPLETE<-----------------------------------------------Facility(Reject(Invoke_problem))NOTE:TheSS-Codemayalsoindicatethecodefor"allforwardingSS",beinghandledasforregistration(seesubclause1.2.1).Figure1.6:ActivationofcallforwardingunconditionalSIST EN 300 952 V7.0.2:2003



ETSIETSIEN300952V7.0.2(1999-12)12(GSM04.82version7.0.2Release1998)1.5DeactivationAnexplicitCFUdeactivationrequestshallcontainthesupplementa
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