SIST EN 301 798 V1.1.1:2005
(Main)Services and Protocols for Advanced Networks (SPAN); Anonymous Call Rejection (ACR) Supplementary Service; Service description
General Information
- 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
- 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
Overview
SIST EN 301 798 V1.1.1:2005 defines the Anonymous Call Rejection (ACR) supplementary service under the Services and Protocols for Advanced Networks (SPAN). Developed by the Slovenian Institute for Standardization (SIST) in reference to the Telecommunications Data Protection Directive, this standard provides a framework enabling subscribers to automatically reject incoming calls where the calling line identification (CLI) has been restricted by the caller. This function applies broadly to all public telecommunications networks, including both PSTN and ISDN environments.
The ACR service responds to user demand for increased privacy and control over unsolicited or anonymous calls, supporting compliance with privacy regulations and enhancing user confidence in telecommunications services.
Key Topics
- Anonymous Call Rejection (ACR): ACR is a supplementary telephony service allowing users to block calls that do not present the caller’s number because the caller deliberately restricted their CLI (Calling Line Identification).
- User Control: The standard ensures that the called party can activate, deactivate, and interrogate the status of the ACR service via a simple interface.
- Privacy and Compliance: The requirement is based on Article 8, clause 3 of the Telecomms Data Protection Directive, which mandates that users have the ability to reject calls with suppressed caller identification.
- Applicability: ACR is defined for both ISDN and PSTN networks, ensuring consistent user experience and data protection across legacy and modern telephony environments.
- Implementation Models:
- Network-Based Solution: The ACR function is managed by the service provider within the network infrastructure.
- User-Based Solution: The rejection service is managed by the user’s own terminal equipment, as supported by the manufacturer.
- Exclusions: Calls where the number is unavailable for technical reasons or restricted by the network itself are not subject to automatic rejection by ACR.
Applications
The ACR service is particularly relevant for:
- Residential Users: Protects against nuisance, spam, or malicious calls where the caller’s identity is intentionally hidden.
- Business Telecommunications: Reduces interruptions and potential security risks by blocking unidentifiable incoming calls, safeguarding proprietary and customer-sensitive communications.
- Service Providers: Supports regulatory compliance and customer satisfaction by offering privacy-enhancing features within their telephony packages.
- Public and Private Networks: The standard details procedures and interactions when ACR-enabled users receive calls from both public and private networks, ensuring correct transmission of rejection indications.
Typical use cases include:
- Rejecting anonymous telemarketing calls at home
- Preventing inbound spoofed or unidentified calls to business lines
- Enabling institutions to comply with privacy laws regarding caller identification
Related Standards
SIST EN 301 798 V1.1.1:2005 references and aligns with several important telecommunications standards, including:
- ETSI EN 300 089 / EN 300 090: ISDN supplementary services for CLI Presentation and Restriction
- ETSI ETS 300 648 / 300 649: PSTN supplementary services for CLI Presentation and Restriction
- EN 300 356: ISDN User Part (ISUP) signalling, relevant for advanced network features and CLI handling
- Telecomms Data Protection Directive (97/66/EC): Legal foundation for telecommunications privacy and personal data processing
Keywords: Anonymous Call Rejection, ACR, CLI, Calling Line Identification, CLIR, ISDN, PSTN, privacy, telephony, supplementary services, telecom data protection
By implementing SIST EN 301 798 V1.1.1:2005, network operators and users ensure both greater control over incoming communications and compliance with regulatory standards for data protection in telecommunications. This contributes to safer and more user-friendly network services in both public and private sectors.
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Frequently Asked Questions
SIST EN 301 798 V1.1.1:2005 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Services and Protocols for Advanced Networks (SPAN); Anonymous Call Rejection (ACR) Supplementary Service; Service description". This standard covers: 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.
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.
SIST EN 301 798 V1.1.1:2005 is classified under the following ICS (International Classification for Standards) categories: 33.040.35 - Telephone networks. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 301 798 V1.1.1:2005 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
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.:+33492944200Fax:+33493654716SiretN°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:editor@etsi.frCopyrightNotificationNopartmaybereproducedexceptasauthorizedbywrittenpermission.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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