SIST EN 300 356-4 V4.2.1:2004

• Abstract:

  To create ETSi endorsement documents to ITU ISUP 2000.

• Status: Published
• Publication Date: 31-Mar-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-Apr-2004
• Due Date: 01-Apr-2004
• Completion Date: 01-Apr-2004
• Ref Project: ETSI EN 300 356-4 V4.2.1 (2001-07) - Integrated Services Digital Network (ISDN); Signalling System No.7 (SS7); ISDN User Part (ISUP) version 4 for the international interface; Part 4: Calling Line Identification Restriction (CLIR) supplementary service [ITU-T Recommendation Q.731, clause 4 (1993) modified]

SIST EN 300 356-4 V4.2.1:2004 is the Slovenian adoption of ETSI EN 300 356-4 V4.2.1 for the Integrated Services Digital Network (ISDN) User Part (ISUP) on the international interface. It specifies the stage 3 signalling procedures and switching functions for the Calling Line Identification Restriction (CLIR) supplementary service in Signalling System No.7 (SS7) networks, for operators, switch vendors and implementers of international ISDN interconnection.

What does SIST EN 300 356-4 V4.2.1:2004 specify?

SIST EN 300 356-4 V4.2.1:2004 specifies the CLIR supplementary service for the pan-European ISDN at the ISUP stage 3 level. In practice, that means it tells network equipment how to handle caller identity restriction across the international interface.

The document is part of a multi-part ISUP version 4 deliverable. The foreword places this part alongside the basic services part, the other supplementary service parts, and the PICS, TSS & TP, ATS and PIXIT parts for basic services and supplementary services.

The scope limits the document to the international interconnection case. It does not cover extra protocol requirements when the service is provided over a non-ISDN network, and it does not cover the national signalling interface. It also keeps some national-use formats, codes and procedures for informative purposes where they affect the international interface.

Annex	What it covers
Annex ZA	Coding of the compatibility information for the generic number parameter

What are the key requirements of SIST EN 300 356-4 V4.2.1:2004?

SIST EN 300 356-4 V4.2.1:2004 says that CLIR allows the calling party to stop its ISDN number from being shown to the called party. That is the service objective, and it matters because exchanges and gateways must preserve that privacy indication end to end.

The document states that, when CLIR is applicable and activated, the originating network shall tell the destination network that the calling party number is not allowed to be presented. The calling line identity is then marked as presentation restricted in the address presentation restricted indicator of the calling party number parameter, and of the generic number parameter if present.

The document also requires that the calling party’s number and any sub-address shall not be included in the call offered to the called user’s installation. In plain terms, the network must not pass identity data onward where CLIR applies.

The text says the user-network interface is responsible for not presenting the calling user’s identity if the information is marked presentation restricted or presentation restricted by network. It also notes the override case for users with an override category, such as police, so implementers must handle special calling-line presentation rules carefully.

For originating local exchanges, the document requires the address presentation restricted indicator to be set according to the access signalling system of the calling user’s system. When CLIR is not invoked, the indicator may be set to presentation restricted by network, which supports default numbers inserted in the public network so that calls are not rejected by Anonymous Call Rejection (ACR).

The document also covers network restricted numbers. This is important for networks that insert a default calling number that is not presentable to the called user, while still keeping the call usable across the public network.

Annex ZA gives the coding approach for compatibility information for the generic number parameter. For implementers, this is the part to check when mapping ISUP compatibility information into signalling fields.

What terms does SIST EN 300 356-4 V4.2.1:2004 define?

CLIR is Calling Line Identification Restriction, the supplementary service that prevents presentation of the caller’s number.

ISUP is the ISDN User Part of SS7, the signalling protocol area used for call control on the international interface.

SS7 is Signalling System No.7, the signalling system used to carry call-control and related network messages.

Presentation restricted means the network must not present the caller’s identity to the called user.

Presentation restricted by network means the network itself has inserted the restriction, often for a default number that should not be shown.

ACR is Anonymous Call Rejection, the supplementary service that may reject calls with non-presentable identity information.

Who uses SIST EN 300 356-4 V4.2.1:2004?

SIST EN 300 356-4 V4.2.1:2004 is used by public telecommunications operators, SS7 and ISUP engineers, switch and gateway vendors, and testing teams working on international ISDN interconnections.

It is especially relevant to teams implementing caller identity privacy, routing between originating and destination local exchanges, and interoperability with services such as ACR. Quality managers and buyers can use it to check whether an ISUP product supports the CLIR behaviour expected on the international interface.

What changed in SIST EN 300 356-4 V4.2.1:2004 from the previous edition?

SIST EN 300 356-4 V4.2.1:2004 is an ETSI endorsement of ITU-T Recommendation Q.731, clause 4, with stated modifications. The document adds a Scope section and a References section at the start of clause 4, updates cross-references throughout the clause, and revises the text for handling presentation restriction and network restricted numbers.

It also replaces the paragraph in subclause 4.2.1, revises subclause 4.5.2.1.1, and adds informative Annex ZA for compatibility information coding.

Which standards are used with SIST EN 300 356-4 V4.2.1:2004?

The document references several companion standards that provide the surrounding ISDN and ISUP framework:

• ITU-T Recommendation I.130 - the three-level service description method used for stage 1, stage 2 and stage 3.
• EN 300 090 - the stage 1 service description for CLIR.
• ETS 300 091 - the stage 2 functional capabilities and information flows for CLIP and CLIR.
• EN 300093-1 - the DSS1 protocol specification for CLIR.
• ETS 300121 - ISUP version 1 for international ISDN interconnections.
• EN 300356-1 - ISUP version 4 basic services.
• EN 300356-2 - ISDN supplementary service part of the same ISUP version 4 series.
• EN 300403-1 - the DSS1 signalling network layer for circuit-mode basic call control.
• EN 301798 - the ACR supplementary service description.
• EN 300356-21 - the ISUP version 4 part for ACR.

What does the SIST EN 300 356-4 V4.2.1:2004 document contain?

SIST EN 300 356-4 V4.2.1:2004 contains an endorsement notice, the service scope, a reference list, modified clauses from ITU-T Recommendation Q.731 clause 4, and one informative annex. The body includes a reference-replacement table that maps the ITU-T references to the ETSI and EN documents used in this edition.

It also contains specific text replacements for caller identity handling in the originating and destination networks. Annex ZA provides the compatibility-information coding guidance for the generic number parameter, which is useful when implementing or testing signalling interoperability.

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Integrated Services Digital Network (ISDN); Signalling System No.7 (SS7); ISDN User Part (ISUP) version 4 for the international interface; Part 4: Calling Line Identification Restriction (CLIR) supplementary service [ITU-T Recommendation Q.731, clause 4 (1993) modified]33.080Digitalno omrežje z integriranimi storitvami (ISDN)Integrated Services Digital Network (ISDN)ICS:Ta slovenski standard je istoveten z:EN 300 356-4 Version 4.2.1SIST EN 300 356-4 V4.2.1:2004en01-april-2004SIST EN 300 356-4 V4.2.1:2004SLOVENSKI
STANDARD
ETSIEN300356-4V4.2.1(2001-07)EuropeanStandard(Telecommunicationsseries)IntegratedServicesDigitalNetwork(ISDN);SignallingSystemNo.7(SS7);ISDNUserPart(ISUP)version4fortheinternationalinterface;Part4:CallingLineIdentificationRestriction(CLIR)supplementaryservice[ITU-TRecommendationQ.731,clause4(1993)modified]SIST EN 300 356-4 V4.2.1:2004

ETSIETSIEN300356-4V4.2.1(2001-07)2ReferenceREN/SPAN-01082-04KeywordsISDN,ISUP,SS7,supplementaryservice,CLIR,endorsementETSI650RoutedesLuciolesF-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.©EuropeanTelecommunicationsStandardsInstitute2001.Allrightsreserved.SIST EN 300 356-4 V4.2.1:2004

ETSIETSIEN300356-4V4.2.1(2001-07)3IntellectualPropertyRightsIPRsessentialorpotentiallyessentialtothepresentdocumentmayhavebeendeclaredtoETSI.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).Thepresentdocumentispart4ofamulti-partdeliverablecoveringtheISDNUserPart(ISUP)version4fortheinternationalinterface,asidentifiedbelow:Part1:"Basicservices[ITU-TRecommendationsQ.761toQ.764(1999)modified]";Part2:"ISDNsupplementaryservice[ITU-TRecommendationQ.730(1999)modified]";Part3:"CallingLineIdentificationPresentation(CLIP)supplementaryservice[ITU-TRecommendationQ.731,clause3(1993)modified]";Part4:"CallingLineIdentificationRestriction(CLIR)supplementaryservice[ITU-TRecommendationQ.731,clause4(1993)modified]";Part5:"ConnectedLineIdentificationPresentation(COLP)supplementaryservice[ITU-TRecommendationQ.731,clause5(1993)modified]";Part6:"ConnectedLineIdentificationRestriction(COLR)supplementaryservice[ITU-TRecommendationQ.731,clause6(1993)modified]";Part7:"TerminalPortability(TP)supplementaryservice[ITU-TRecommendationQ.733,clause4(1993)modified]";Part8:"User-to-UserSignalling(UUS)supplementaryservice[ITU-TRecommendationQ.737,clause1(1997)modified]";Part9:"ClosedUserGroup(CUG)supplementaryservice[ITU-TRecommendationQ.735,clause1(1993)modified]";Part10:"Subaddressing(SUB)supplementaryservice[ITU-TRecommendationQ.731,clause8(1992)modified]";Part11:"MaliciousCallIdentification(MCID)supplementaryservice[ITU-TRecommendationQ.731,clause7(1997)modified]";Part12:"ConferenceCall,add-on(CONF)supplementaryservice[ITU-TRecommendationQ.734,clause1(1993)andimplementorsguide(1998)modified]";Part14:"ExplicitCallTransfer(ECT)supplementaryservice[ITU-TRecommendationQ.732,clause7(1996)andimplementorsguide(1998)modified]";Part15:"Diversionsupplementaryservice[ITU-TRecommendationQ.732,clauses2to5(1999)modified]";Part16:"CallHold(HOLD)supplementaryservice[ITU-TRecommendationQ.733,clause2(1993)modified]";Part17:"CallWaiting(CW)supplementaryservice[ITU-TRecommendationQ.733,clause1(1992)modified]";SIST EN 300 356-4 V4.2.1:2004

ETSIETSIEN300356-4V4.2.1(2001-07)4Part18:"CompletionofCallstoBusySubscriber(CCBS)supplementaryservice[ITU-TRecommendationQ.733,clause3(1997)modified]";Part19:"Three-Party(3PTY)supplementaryservice[ITU-TRecommendationQ.734,clause2(1996)andimplementorsguide(1998)modified]";Part20:"CompletionofCallsonNoReply(CCNR)supplementaryservice[ITU-TRecommendationQ.733,clause5(1999)modified]";Part21:"AnonymousCallRejection(ACR)supplementaryservice[ITU-TRecommendationQ.731,clause4(1993)]";Part31:"ProtocolImplementationConformanceStatement(PICS)proformaspecificationforbasicservices";Part32:"TestSuiteStructureandTestPurposes(TSS&TP)specificationforbasicservices";Part33:"AbstractTestSuite(ATS)andpartialProtocolImplementationeXtraInformationforTesting(PIXIT)proformaspecificationforbasicservices";Part34:"ProtocolImplementationConformanceStatement(PICS)proformaspecificationforsupplementaryservices";Part35:"TestSuiteStructureandTestPurposes(TSS&TP)specificationforsupplementaryservices";Part36:"AbstractTestSuite(ATS)andpartialProtocolImplementationeXtraInformationforTesting(PIXIT)proformaspecificationforsupplementaryservices".InaccordancewithITU-TRecommendationI.130[1],thefollowingthreelevelstructureisusedtodescribethesupplementarytelecommunicationservicesasprovidedbyEuropeanpublictelecommunicationsoperatorsunderthepan-EuropeanIntegratedServicesDigitalNetwork(ISDN):-Stage1:isanoverallservicedescription,fromtheuser'sstand-point;-Stage2:identifiesthefunctionalcapabilitiesandinformationflowsneededtosupporttheservicedescribedinstage1;and-Stage3:definesthesignallingsystemprotocolsandswitchingfunctionsneededtoimplementtheservicedescribedinstage1.Thepresentdocumentdetailsthestagethreeaspects(signallingsystemprotocolsandswitchingfunctions)neededtosupporttheCallingLineIdentificationRestriction(CLIR)supplementaryservice.Thestage1andstage2aspectsaredetailedinEN300090[2]andETS300091[3],respectively.NationaltranspositiondatesDateofadoptionofthisEN:13July2001DateoflatestannouncementofthisEN(doa):31October2001DateoflatestpublicationofnewNationalStandardorendorsementofthisEN(dop/e):30April2002DateofwithdrawalofanyconflictingNationalStandard(dow):30April2002EndorsementnoticeTheelementsofITU-TRecommendationQ.731,clause4(1993)apply,withthefollowingmodifications.NOTE:Newormodifiedtextisindicatedusingsidebars.Inaddition,underliningand/orstrike-outareusedtohighlightdetailedmodificationswherenecessary.SIST EN 300 356-4 V4.2.1:2004

ETSIETSIEN300356-4V4.2.1(2001-07)5GlobalmodificationstoITU-TRecommendationQ.731,clause4Insertthefollowingtwoclauses(ScopeandReferences)atthestartofclause4.ScopeThepresentdocumen
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