SIST EN 300 090 V1.2.1:2005

• Abstract:

  This deliverable specifies the enhancements of the CLIR serviuce description to handle the new CLI indicator presentation restricted by network for support of e.g. Anonymous Call Rejection (ACR). This is the version 2 of 300 090.

• Status: Published
• Publication Date: 31-Dec-2004
• ICS: 33.080 - Integrated Services Digital Network (ISDN)
• 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 300 090 V1.2.1 (2000-12) - Integrated Services Digital Network (ISDN); Calling Line Identification Restriction (CLIR) supplementary service; Service description

SIST EN 300 090 V1.2.1:2005 is the Slovenian adoption of the ETSI European Standard for the Integrated Services Digital Network (ISDN) Calling Line Identification Restriction (CLIR) supplementary service. It specifies the stage 1 service description for how CLIR prevents presentation of the calling party’s ISDN number, including the newer network-restricted presentation indicator used for cases such as Anonymous Call Rejection (ACR). It is written for telecom operators, service designers, and implementers who need the user-level rules for public and private ISDN interworking.

What does SIST EN 300 090 V1.2.1:2005 specify?

SIST EN 300 090 V1.2.1:2005 defines the stage 1 description of CLIR for pan-European ISDN as seen from the user’s point of view. It also sets out how CLIR works with public ISDN, private ISDN, and other networks at the service level.

The document is organized into these main clauses:

• Scope
• References
• Definitions
• Abbreviations
• Description
• Procedures
• Intercommunication considerations
• Interactions with other supplementary services

Clause 5 describes the service itself, clause 6 covers provision and operation, clause 7 covers interworking, and clause 8 describes how CLIR behaves with other supplementary services.

What are the key requirements of SIST EN 300 090 V1.2.1:2005?

Provision, access, and subscription

SIST EN 300 090 V1.2.1:2005 applies to basic access and primary rate access. In practice, this means the service is intended for standard ISDN access types rather than a special case of one terminal.

Clause 6.1 says CLIR may be offered in temporary mode or permanent mode. Permanent mode is subscription-based and applies automatically to all calls, while temporary mode can be selected per call or based on a default value. A network providing CLIR shall support temporary mode at minimum, so the service can be offered flexibly to end users.

How CLIR is invoked

Clause 6.2.3 states that the network invokes CLIR automatically for permanent mode calls. For temporary mode, the default value determines whether CLIR is used automatically or only when the subscriber requests it at call setup.

This matters because the network must handle the caller’s privacy choice consistently and must also apply the restriction to network-provided numbers when required. The document also distinguishes the network indication “presentation restricted by network” for special cases such as calls from special resources.

What the called user receives

Clause 6.2.3.2 says that when CLIR is invoked and the called party has CLIP, the called party receives an indication that the calling party number is not available because of restriction. In practice, the called user sees a restricted identity rather than a normal caller number.

The document also recognizes an override category. Where national rules allow it, some called users may override restriction and see the caller’s number and subaddress information. That is a national regulatory matter, so operators must align configuration with local rules.

Interworking and service interactions

Clause 7 requires the originating public ISDN to notify the destination network when CLIR is invoked so that the calling party’s ISDN number and subaddress are not presented. For non-ISDN interworking, the document allows the originating network to block forwarding of identifying information when CLIR is active or when the network-provided number is marked restricted by network.

Clause 8 says CLIR normally takes precedence over Calling Line Identification Presentation (CLIP), except where an override category applies. It also carries the restriction through call transfer and diversion services, so the privacy setting follows the call path.

What terms does SIST EN 300 090 V1.2.1:2005 define?

• Calling Line Identification Restriction (CLIR) - the supplementary service that prevents presentation of the calling party’s ISDN number.
• Calling Line Identification Presentation (CLIP) - the companion service that presents the calling line identity to the called user.
• Integrated Services Digital Network (ISDN) - the digital network context in which CLIR is defined and used.
• Temporary mode - CLIR is invoked on a per-call basis.
• Permanent mode - CLIR is invoked automatically by the network on all calls from the subscriber.
• Override category - a special user category that may override restriction under national rules.
• Subaddress - additional address information associated with the ISDN number.

Who uses SIST EN 300 090 V1.2.1:2005?

SIST EN 300 090 V1.2.1:2005 is used by public telecommunications operators, private ISDN operators, service designers, and switching-system vendors. It helps them configure how caller identity is hidden, how defaults and per-call requests work, and how the service interacts with CLIP, call transfer, diversion, and ACR-related behavior.

It is also useful for regulatory and quality teams that need to check whether an ISDN implementation follows the agreed stage 1 service rules before moving to stage 2 and stage 3 work.

What changed in SIST EN 300 090 V1.2.1:2005 from the previous edition?

• This second version adds support for the new CLIAPRI value “presentation restricted by network”.

Which standards are used with SIST EN 300 090 V1.2.1:2005?

Standard	Contribution
ITU-T Recommendation I.130	Gives the stage 1, stage 2, and stage 3 service description framework.
ITU-T Recommendation I.112	Supplies ISDN and service terminology used in the definitions.
ITU-T Recommendation E.164	Defines the numbering plan and the meaning of ISDN number and subaddress.
ITU-T Recommendation I.210	Defines supplementary service concepts.
ITU-T Recommendation Q.9	Defines basic access and primary rate access terminology.
ETSI EN 300 089	Describes CLIP, the main companion service to CLIR.
ETSI EN 301 798	Describes Anonymous Call Rejection (ACR), which uses the restricted presentation indicator.
ETS 300 091	Gives the stage 2 aspects for CLIR.
ETS 300 093	Gives the stage 3 aspects for CLIR.

What does the SIST EN 300 090 V1.2.1:2005 document contain?

The document contains the service description, the operational procedures for provision and invocation, and a table of subscription options in clause 6.1. It also contains interworking rules for public ISDN, private ISDN, and non-ISDN environments, plus a clause-by-clause review of interactions with other supplementary services.

Clause 8 is especially practical because it walks through services such as Advice of Charge, Call waiting, Call hold, Call transfer, diversion services, Freephone, Malicious call identification, subaddressing, terminal portability, three-party, and user-user signalling, and states whether CLIR changes their behavior.

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Integrated Services Digital Network (ISDN); Calling Line Identification Restriction (CLIR) supplementary service; Service description33.080Digitalno omrežje z integriranimi storitvami (ISDN)Integrated Services Digital Network (ISDN)ICS:Ta slovenski standard je istoveten z:EN 300 090 Version 1.2.1SIST EN 300 090 V1.2.1:2005en01-januar-2005SIST EN 300 090 V1.2.1:2005SLOVENSKI
STANDARD
ETSIEN300090V1.2.1(2000-12)EuropeanStandard(Telecommunicationsseries)IntegratedServicesDigitalNetwork(ISDN);CallingLineIdentificationRestriction(CLIR)supplementaryservice;ServicedescriptionSIST EN 300 090 V1.2.1:2005

ETSIETSIEN300090V1.2.1(2000-12)2ReferenceREN/SPAN-020100KeywordsCLIR,ISDN,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 300 090 V1.2.1:2005

ETSIETSIEN300090V1.2.1(2000-12)3ContentsIntellectualPropertyRights.5Foreword.51Scope.62References.63Definitions.74Abbreviations.75Description.76Procedures.86.1Provisionandwithdrawal.86.2Normalprocedures.86.2.1Activation,deactivationandregistration.86.2.2Erasure.86.2.3Invocationandoperation.86.2.3.1Callinguserside.86.2.3.2Calleduserside.96.2.4Interrogation.96.3Exceptionalprocedures.96.3.1Activation,deactivationandregistration.96.3.2Erasure.96.3.3Invocationandoperation.96.3.4Interrogation.97Intercommunicationconsiderations.107.1Interworkingwithnon-ISDNs.107.2InterworkingwithprivateISDNs.108Interactionswithothersupplementaryservices.108.1AdviceofCharge.108.1.1Charginginformationatcallset-uptime.108.1.2Charginginformationduringthecall.108.1.3Charginginformationattheendofthecall.108.2Callwaiting.108.3Callhold.108.4Calltransfer.118.4.1Explicitcalltransfer.118.4.2Singlesteptransfer.118.5Numberidentificationservices.118.5.1Callinglineidentificationpresentation.118.5.2Callinglineidentificationrestriction.118.5.3Connectedlineidentificationpresentation.118.5.4Connectedlineidentificationrestriction.118.6Closedusergroup.118.7Completionofcallstobusysubscriber.118.8Conferenceservices.118.8.1Conferencecall,add-on.118.8.2Meetmeconference.118.9Directdiallingin.128.10Diversionservices.128.10.1Callforwardingunconditional.128.10.2Callforwardingbusy.128.10.3Callforwardingnoreply.128.10.4Calldeflection.128.11Freephone.12SIST EN 300 090 V1.2.1:2005

ETSIETSIEN300090V1.2.1(2000-12)48.12Maliciouscallidentification.128.13Multiplesubscribernumber.128.14Subaddressing.128.15Terminalportability.128.16Threeparty.128.17User-usersignalling.13History.14SIST EN 300 090 V1.2.1:2005

ETSIETSIEN300090V1.2.1(2000-12)5IntellectualPropertyRightsIPRsessentialorpotentiallyessentialtothepresentdocumentmayhavebeendeclaredtoETSI.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).InaccordancewithITU-TRecommendationI.130[1],thefollowingthreelevelstructureisusedtodescribethesupplementarytelecommunicationsservicesasprovidedbyEuropeanpublictelecommunicationsoperatorsunderthepan-EuropeanIntegratedServicesDigitalNetwork(ISDN):-Stage1:isanoverallservicedescription,fromtheuser'sstandpoint;-Stage2:identifiesthefunctionalcapabilitiesandinformationflowsneededtosupporttheservicedescribedinstage1;and-Stage3:definesthesignallingsystemprotocolsandswitchingfunctionsneededtoimplementtheservicedescribedinstage1.Thepresentdocumentdetailsthestage1aspects(overallservicedescription)fortheCallingLineIdentificationRestriction(CLIR)supplementaryservice.Thestage2andstage3aspectsaredetailedinETS300091andETS300093,respectively.ThissecondversionincludeschangesfordealingwithsupportofthenewCLIAPRIvalue"presentationrestrictedbynetwork".NationaltranspositiondatesDateofadoptionofthisEN:1December2000DateoflatestannouncementofthisEN(doa):31March2001DateoflatestpublicationofnewNationalStandardorendorsementofthisEN(dop/e):30September2001DateofwithdrawalofanyconflictingNationalStandard(dow):30September2001SIST EN 300 090 V1.2.1:2005

ETSIETSIEN300090V1.2.1(2000-12)61ScopeThepresentdocumentdefinesthestageoneoftheCallingLineIdentificationRestriction(CLIR)supplementaryserviceforthepan-EuropeanIntegratedServicesDigitalNetwork(ISDN)asprovidedbyEuropeanpublictelecommunicationsoperators.Stageoneisanoverallservicedescriptionfromtheuser'spointofview(seeITU-TRecommendationI.130[1]),butdoesnotdealwiththedetailsofthehumaninterfaceitself.ThepresentdocumentdefinestheinterworkingrequirementsofprivateISDNswiththepublicISDN.InadditionthepresentdocumentspecifiesthebasefunctionalitywheretheserviceisprovidedtotheuserviaaprivateISDN.ThepresentdocumentdoesnotspecifytheadditionalrequirementswheretheserviceisprovidedtotheuserviaatelecommunicationsnetworkthatisnotanISDNbutdoesincludeinterworkingrequirementsofothernetworkswiththepub
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