SIST EN 301 798 V1.1.1:2005

• Abstract:

  Extract from article 8, clause 3 Telecomms Data Protection Directive: Where presentation of calling line identification is offered and where the calling line identification is presented prior to the being established, the called subscriber must have the possibility via a simple means to reject incoming calls where the presentation of the calling line identification has been eliminated by the calling user or subscriber. Applicability: all networks i.e. PSTN, ISDN. Reference document: Telecomms Data Protection Directive.

• Status: Published
• Publication Date: 31-Dec-2004
• ICS: 33.040.35 - Telephone networks
• 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
• Ref Project: ETSI EN 301 798 V1.1.1 (2000-10) - Services and Protocols for Advanced Networks (SPAN); Anonymous Call Rejection (ACR) Supplementary Service; Service description

SIST EN 301 798 V1.1.1:2005 is the Slovenian adoption of ETSI EN 301 798 for the Anonymous Call Rejection (ACR) supplementary service. It specifies how ACR works in Public Telecommunication Networks such as PSTN and ISDN, and it is written for network operators, service providers, equipment makers, and users who need a clear service description.

What does SIST EN 301 798 V1.1.1:2005 specify?

SIST EN 301 798 V1.1.1:2005 defines the ACR supplementary service, its administration, and its operation. The document also explains how ACR relates to calling line identity handling, especially when the calling user has restricted presentation of the identity.

The service is described in a generic way so that implementations can follow the same user view across different networks. The standard covers both a network-based solution and a user-based solution, and it points out that national regulation and network design decide where the actual rejection takes place.

Annex	What it covers
Annex A	Normative ISDN interactions
Annex B	Normative PSTN interactions
Annex C	Informative ISDN interaction with Incoming Call Barring
Annex D	Informative PSTN interactions with other supplementary services
Annex E	Informative guidelines from the Directive
Annex F	Informative additional guidelines, including user-based vs network-based ACR

What are the key requirements of SIST EN 301 798 V1.1.1:2005?

SIST EN 301 798 V1.1.1:2005 requires that the served user can reject incoming calls when the calling line identity is marked as restricted under CLIR. In practice, the called party’s equipment must not be alerted, so the call is stopped before it rings through.

The document separates the core service behavior from the implementation option. In a network-based solution, the user must be able to activate, deactivate, and interrogate the service through the network. In a user-based solution, activation and deactivation are left to the equipment implementation.

Service behavior and call handling

• Clause 4 states that the served user can reject calls based on restricted calling line identity.
• Clause 5 states that ACR rejects calls where the CLI is marked “presentation restricted” under CLIR.
• Clause 5 also states that ACR does not reject calls marked “presentation restricted by network.”
• Clause 5 says the served user’s ability to originate calls is unchanged.
• Clause 5 requires an appropriate indication to be given to the calling user when ACR rejects the call.
• Clause 6.2.3 states that ACR is invoked automatically for incoming calls marked “presentation restricted.”
• Clause 6.2.3 excludes calls marked “not available,” “presentation allowed,” and “presentation restricted by network.”

Provision, control, and exceptions

• Clause 6.1 says the network-based service is provided by prior arrangement with the service provider.
• Clause 6.1 allows withdrawal at the served user’s request or for administrative reasons.
• Clause 6.2.2 requires the customer to be able to turn the service on and off.
• Clause 6.2.4 allows interrogation of service status in the network-based solution.
• Clause 6.3 says the provider rejects activation, deactivation, or interrogation requests it cannot perform.

Interaction with other services

Annex A and Annex B show precedence rules with related services. ACR takes precedence over Call Waiting, Call Forwarding, and Selective Call Forwarding when those services would otherwise present a call to the served user. Annex A and Annex B also show many services with no impact, which matters when checking whether ACR can be deployed without side effects.

Annex C and Annex D give important interaction cases for Incoming Call Barring, which takes precedence over ACR. Annex E and Annex F explain how the service should behave when the caller’s identity is presented as restricted, unavailable, or restricted by the network.

What terms does SIST EN 301 798 V1.1.1:2005 define?

• Served user - the user to whom ACR is provided.
• ACR - Anonymous Call Rejection, the supplementary service that rejects calls with restricted CLI.
• CLIP - Calling Line Identification Presentation, the supplementary service that presents the caller’s identity.
• CLIR - Calling Line Identification Restriction, the supplementary service that restricts presentation of the caller’s identity.
• CLI - Calling Line Identity, the calling party identity used to decide whether ACR applies.
• APRI - Address Presentation Restriction Indicator, the indicator used in the guideline discussion of presentation states.
• ISDN - Integrated Services Digital Network, one of the network types covered by the standard.
• PSTN - Public Switched Telephone Network, the other network type covered by the standard.

Who uses SIST EN 301 798 V1.1.1:2005?

SIST EN 301 798 V1.1.1:2005 is used by public network operators and service providers that offer call rejection features. It also helps equipment manufacturers, because the standard distinguishes between a network-based implementation and a user-based implementation.

In practice, it is relevant to telecom engineers and service designers who need to decide how ACR should interact with CLIR, CLIP, Call Waiting, Call Forwarding, and private network interworking. It is also useful for regulators and buyers who need a service description that matches the Directive cited in the document.

Which standards are used with SIST EN 301 798 V1.1.1:2005?

The document relies on the following references:

• Directive 97/66/EC - the legal basis cited for the ACR service requirement.
• ETSI EN 300 089 - CLIP for ISDN.
• ETSI EN 300 090 - CLIR for ISDN.
• ETSI ETS 300 648 - CLIP for PSTN.
• ETSI ETS 300 649 - CLIR for PSTN.
• ETSI EN 300 356-1 - ISUP basic services.
• ETSI EN 300 356-3 - ISUP support for CLIP.
• ETSI EN 300 356-4 - ISUP support for CLIR.
• ETSI EN 300 356-21 - ISUP support for ACR.
• ETSI EN 300 485 - cause and location definitions used with DSS1 and ISUP.

What does the SIST EN 301 798 V1.1.1:2005 document contain?

The document contains a service definition, user requirements, procedures for provision and control, and intercommunication considerations. It then gives detailed interaction clauses for ISDN and PSTN, showing which supplementary services are unaffected and which ones ACR overrides.

It also includes guideline material on caller identity values such as “presentation restricted,” “address not available,” and “presentation restricted by network.” Annex F adds practical notes on network-based versus user-based ACR, selective anonymous call rejection, and ways to inform the calling party when a call is rejected.

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Storitve in protokoli za napredna omrežja (SPAN) – Dopolnilna storitev: zavrnitev anonimnega klica (ACR) – Opis storitveServices and Protocols for Advanced Networks (SPAN); Anonymous Call Rejection (ACR) Supplementary Service; Service description33.040.35Telefonska omrežjaTelephone networksICS:Ta slovenski standard je istoveten z:EN 301 798 Version 1.1.1SIST EN 301 798 V1.1.1:2005en01-januar-2005SIST EN 301 798 V1.1.1:2005SLOVENSKI
STANDARD
ETSIEN301798V1.1.1(2000-10)EuropeanStandard(Telecommunicationsseries)ServiceandProtocolsforAdvancedNetworks(SPAN);AnonymousCallRejection(ACR)SupplementaryService;ServicedescriptionSIST EN 301 798 V1.1.1:2005

ETSIETSIEN301798V1.1.1(2000-10)2ReferenceDEN/SPAN-020074KeywordsISDN,PSTN,stage1,supplementaryserviceETSI650RoutedesLuciolesF-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 301 798 V1.1.1:2005

ETSIETSIEN301798V1.1.1(2000-10)3ContentsIntellectualPropertyRights.6Foreword.61Scope.72References.73Definitionsandabbreviations.83.1Definitions.83.2Abbreviations.84UserRequirements.85ServiceDefinition.96Procedures.96.1Provision/Withdrawal.96.2NormalProcedures.96.2.1Registrationanderasure.96.2.2Activationanddeactivation.96.2.3Invocationandoperation.96.2.4Interrogation.96.3ExceptionalProcedures.107IntercommunicationConsiderations.107.1InterworkingwithPrivateNetworks.10AnnexA(normative):ISDNInteractions.11A.1Adviceofchargeservices.11A.1.1Charginginformationatcallset-uptime.11A.1.2Charginginformationduringthecall.11A.1.3Charginginformationattheendofthecall.11A.2CallWaiting.11A.3CallHold.11A.4CallTransfer.11A.4.1Explicitcalltransfer.11A.5NumberIdentificationServices.11A.5.1Callinglineidentificationpresentation.11A.5.2Callinglineidentificationrestriction.12A.5.3Connectedlineidentificationpresentation.12A.5.4Connectedlineidentificationrestriction.12A.6Closedusergroup.12A.7Completionofcalls.12A.7.1Completionofcallstobusysubscriber.12A.7.2Completionofcallsonnoreply.13A.8Conferenceservices.13A.8.1Conferencecall,add-on.13A.8.2Meet-meconference.13A.9Directdiallingin.13A.10CallDiversionservices.13A.10.1Callforwardingunconditional.13A.10.2Callforwardingbusy.14A.10.3Callforwardingnoreply.14SIST EN 301 798 V1.1.1:2005

ETSIETSIEN301798V1.1.1(2000-10)4A.10.4Calldeflection.14A.10.5Selectivecallforwarding.14A.11Freephone.14A.12Maliciouscallidentification.14A.13Multiplesubscribernumber.14A.14Subaddressing.14A.15Terminalportability.15A.16Threeparty.15A.17User-usersignalling.15A.18Outgoingcallbaring.15A.18.1Outgoingcallbarring:fixed.15A.18.2Outgoingcallbarring:usercontrolled.15A.19Messagewaitingindication.15AnnexB(normative):PSTNInteractions.16B.1NumberIdentificationServices.16B.1.1Callinglineidentificationpresentation.16B.1.2Callinglineidentificationrestriction.16AnnexC(informative):ISDNInteractions.17C.1IncomingCallBarring.17AnnexD(informative):PSTNInteractions.18D.1IncomingCallBarring.18D.2Adviceofchargeservices.18D.2.1Charginginformationatcallset-uptime.18D.2.2Charginginformationduringthecall.18D.2.3Charginginformationattheendofthecall.18D.3CallWaiting(CW).18D.4CallHold.18D.5CallTransfer.18D.6Completionofcalls.19D.6.1Completionofcallstobusysubscriber.19D.6.2Completionofcallsonnoreply.19D.7Conferenceservices.19D.8Directdiallingin.19D.9CallForwardingservices.20D.9.1Callforwardingunconditional.20D.9.2Callforwardingbusy.20D.9.3Callforwardingnoreply.20D.9.4Selectivecallforwarding.20SIST EN 301 798 V1.1.1:2005

ETSIETSIEN301798V1.1.1(2000-10)5D.10Freephone.20D.11Maliciouscallidentification.20D.12Multiplesubscribernumber.20D.13Threeparty.20D.14Outgoingcallbaring.21D.14.1Outgoingcallbarring:fixed.21D.14.2Outgoingcallbarring:usercontrolled.21D.15Messagewaitingindication.21AnnexE(informative):Guidelines.22AnnexF(informative):AdditionalGuidelines.24F.1Observationsonuserbasedvsnetworkbasedsolutions.24F.1.1User-basedsolutionofACR.24F.1.2Network-basedsolution.24F.1.3Conclusions.25F.2Functionaldifferencesofthenetworkanduserbasedsolution.25F.3SelectiveAnonymousCallRejection.25F.4Avoidingrejectionofcalls.25F.4.1Networkinitiatedcalls.25F.4.2Userinitiatedcalls.25F.5Informingthecallingparty.26History.27SIST EN 301 798 V1.1.1:2005

ETSIETSIEN301798V1.1.1(2000-10)6IntellectualPropertyRightsIPRsessentialorpotentiallyessentialtothepresentdocumentmayhavebeendeclaredtoETSI.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).ThepresentdocumenthadbeensubmittedtotheOne-stepApprovalProcedurewiththeversionnumber2.0.0.Forconsistencyreasonstheversionnumberismodifiedandthepresentdocumentbeingpublishedwiththeversionnumber1.1.1.NationaltranspositiondatesDateofadoptionofthisEN:20October2000DateoflatestannouncementofthisEN(doa):31January2001DateoflatestpublicationofnewNationalStandardorendorsementofthisEN(dop/e):31July2001DateofwithdrawalofanyconflictingNationalStandard(dow):31July2001SIST EN 301 798 V1.1.1:2005

ETSIETSIEN301798V1.1.1(2000-10)71ScopeThepresentdocumentprovidesthedefinition,administrativeaspectsandoperationfortheAnonymousCallRejectionSupplementaryservice.Whilsttheservicedescriptionisgenerictheremaybestage2and3requirementsorotherrequirementsforspecificnetworks.Wherethereareidentifiedissuesforspecificnetworksthesewillbeindicatedeitherintherelevantplaceinthetextorinanannex.Thepresentdocumentspecifiesaserviceasinstructedbyarticle8,clause3oftheECTelecommsDataProtectionDirective(97/66/EC[1])-seeannexEfortherelevantextractfromthisdirective.TheACRsupplementaryserviceappliestoPublicTelecommunicationNetworkse.g.PSTNandISDN.Thepurposeofagenericservicedescriptionistoenablefutureimplementationtoworkinasimilarmannerfortheviewoftheuser.Atwhichpointinthenetworktheactualrejectionofincomingcallwilltakeplaceissubjecttonationalregulationsandnetworkconsiderations.TheACRsupplementaryservicecouldberealizedintwoways,eitherasanetworkbasedsolution(ofwhichtheactivation,deactivationandinterrogationproceduresaredescribedinthepresentdocument)orasauserbasedsolutionusingthebasiccallprocedurewhichimplementationislefttouser'sequipmentmanufacturer.1)Networkbasedsolution:aserviceofferedaspartofafunctionwithinthepublicnetworkforallincomingcallsforwhichthecallinglineidentificationisnotavailablebecauseofrestrictionaccordingtotheCLIRsupplementaryservice[3]and[5].2)Userbasedsolution:aserviceofferedaspartofafunctionwithintheend-userequipmentforallincomingcallsortobedecidedbytheend-userperincomingcallforwhichthecallinglineidentificationisnotavailablebecauseofrestrictionaccordingtotheCLIRsupplementaryservice[3]and[5].NOTE:IfthepresentationofthecallingpartynumberisrestrictedbynetworkreasonstheACRsupplementaryserviceshallnotapply.2ReferencesThefollowingdocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthepresentdocument.• Referencesareeitherspecific(identifiedbydateofpublication,editionnumber,versionnumber,etc.)ornon-specific.• Foraspecificreference,subsequentrevisionsdonotapply.• Foranon-specificreference,thelatestversionapplies.• Anon-specificreferencetoanETSshallalsobetakentorefertolaterversionspublishedasanENwiththesamenumber.[1]Directive97/66/ECoftheEuropeanParliamentandoftheCouncilof15December1997concerningtheprocessingofpersonaldataandtheprotectionofprivacyinthetelecommunicationssector.[2]ETSIEN300089:"IntegratedServicesDigitalNetwork(ISDN);CallingLineIdentificationPresentation(CLIP)supplementaryservice;ServiceDescription".[3]ETSIEN300090:"IntegratedServicesDigitalNetwork(ISDN);CallingLineIdentificationRestriction(CLIR)supplementaryservice;Servicedescription".[4]ETSIETS300648:"PublicSwitchedTelephoneNetwork(PSTN);CallingLineIdentificationPresentation(CLIP)supplementaryservice;ServiceDescription".[5]ETSIETS300649:"PublicSwitchedTelephoneNetwork(PSTN);CallingLineIdentificationRestriction(CLIR)supplementaryservice;ServiceDescription".SIST EN 301 798 V1.1.1:2005

ETSIETSIEN301798V1.1.1(2000-10)8[6]ETSIEN300356-1:"IntegratedServicesDigitalNetwork(ISDN);SignallingSystemNo.7;ISDNUserPart(ISUP)version3fortheinternationalinterface;Part1:Basicservices[ITU-TRecommendationsQ.761toQ.764(1997),modified]".[7]ETSIEN300356-3:"IntegratedServicesDigitalNetwork(ISDN);SignallingSystemNo.7;ISDNUserPart(ISUP)version4fortheinternationalinterface;Part3:CallingLineIdentificationPresentation(CLIP)supplementaryservice[ITU-TRecommendationQ.731,clause3(1993),modified]".[8]ETSIEN300356-4:"IntegratedServicesDigitalNetwork(ISDN);SignallingSystemNo.7;ISDNUserPart(ISUP)version4fortheinternationalinterface;Part4:CallingLineIdentificationRestriction(CLIR)supplementaryservice[ITU-TRecommendationQ.731,clause4(1993),modified]".[9]ETSIEN300356-21:"IntegratedServicesDigitalNetwork(ISDN);SignallingSystemNo.7;ISDNUserPart(ISUP)version4fortheinternationalinterface;Part21:AnonymousCallrejection(ACR)supplementaryservice[ITU-TRecommendationQ.731clause4(1993)]".[10]ETSIEN300485:"IntegratedServicesDigitalNetwork(ISDN);DefinitionandusageofcauseandlocationinDigitalSubscriberSignallingSystemNo.one(DSS1)andSignallingSystemNo.7ISDNUserPart(ISUP)[ITU-TRecommendationQ.850(1998),modified]".3Definitionsandabbreviations3.1DefinitionsForthepurposesofthepresentdocument,thefollowingtermsanddefinitionsapply:Serveduser:usertowhomtheACRsupplementaryserviceisprovided.3.2AbbreviationsForthepurposesofthepresentdocument,thefollowingabbreviationsapply:ACRAnonymousCallRejectionAPRIAddressPresentationRestrictionIndicatorCLICallingLineIdentificationCLIPCallingLineIdentificationPresentationCLIRCallingLineIdentificationRestrictionISDNIntegratedServicesDigitalNetworkPSTNPublicSwitchedTelephoneNetwork4UserRequirementsTheservedusershallhavetheabilitytorejectcallsbasedontheindicationthatthecallinglineidentityisnotpresentedbecauseofrestrictionaccordingtotheCLIRsupplementaryservice[3]and[5].Thecalledparty'sequipmentshallnotbealerted.DependingonthesolutionhowtheACRsupplementaryserviceisimplemented,thefollowinguserrequirementsapply:1)networkbasedsolution:theabilitytoactivate,deactivateandinterrogatethesupplementaryservice;2)userbasedsolution:theabilitytoactivate,deactivateandinterrogatethesupplementaryservicetorejectallincomingcallsareimplementationdependentandlefttouser'sequipmentmanufacturer.Withthenetworkbasedsolutionthereshallbenoneedtousespecialterminalequipment,whereastheuserbasedsolutionthereis.SIST EN 301 798 V1.1.1:2005

ETSIETSIEN301798V1.1.1(2000-10)95ServiceDefinitionTheAnonymousCallRejection(ACR)supplementaryserviceallowstheservedusertorejectincomingcallsfromusersorsubscriberswhohaverestrictedthepresentationoftheircallinglineidentityaccordingtotheCLIRsupplementaryservice[3]and[5].ACRwillrejectallcallswithCLImarked"presentationrestricted"accordingtoCLIR.Thecallsarerejectedregardlessofthecurrentstate(e.g.freeorbusy)oftheserveduser'saccess.TheACRsupplementaryserviceshallnotrejectcallswithaCLImarked"presentationrestrictedbynetwork".Theserveduser'sabilitytooriginatecallsisunaffectedbytheACRsupplementaryservice.ThecallingusershallbegivenanappropriateindicationthatthecallhasbeenrejectedduetotheapplicationoftheACRsupplementaryservice.NOTE:Themethodofrejectionofanonymouscallsisaserviceprovideroption,andmayincludethefunctionalitywhereallanonymouscallsareforwardedtoe.g.avoicemailservice.6Procedures6.1Provision/WithdrawalWhenimplementedasanetworkbasedsolution:1.TheACRsupplementaryserviceshallbeprovidedafterpriorarrangementwiththeserviceprovider.2.TheACRsupplementaryserviceshallbewithdrawnattheserveduser'srequestorforadministrativereasons.6.2NormalProcedures6.2.1RegistrationanderasureNotapplicable.6.2.2ActivationanddeactivationThecustomershallhavetheabilitytoturntheACRsupplementaryserviceon(activate)andoff(deactivate).WhenimplementedasanetworkbasedsolutiontoactivateordeactivatetheACRsupplementaryservicetheusershallsendappropriateinformationtothenetwork.6.2.3InvocationandoperationWhentheACRsupplementaryservicehasbeenactivated,thentheACR
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