SIST EN 300 356-4 V3.1.3:2003
(Main)Integrated Services Digital Network (ISDN); Signalling System No.7; ISDN User Part (ISUP) version 3 for the international interface; Part 4: Calling Line Identification Restriction (CLIR) supplementary service [ITU-T Recommendation Q.731, clause 4 (1993), modified]
General Information
- Abstract
Additional generic procedures to those in basic call for use in this supplementary service.
- Status
- Published
- Publication Date
- 30-Nov-2003
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 01-Dec-2003
- Due Date
- 01-Dec-2003
- Completion Date
- 01-Dec-2003
Overview
SIST EN 300 356-4 V3.1.3:2003 establishes standardized protocol procedures for the Calling Line Identification Restriction (CLIR) supplementary service within Integrated Services Digital Networks (ISDN) employing Signalling System No.7 (SS7) ISDN User Part (ISUP) version 3 at the international interface. Developed by SIST and harmonized with European and ITU-T recommendations, this standard ensures consistent implementation of CLIR, supporting privacy and regulatory requirements for telecommunications operators across borders.
CLIR is a crucial supplementary service that enables a calling party to prevent the presentation of their ISDN number to the called party. This feature is widely used to address privacy concerns and comply with data protection obligations in public telecommunication services.
Key Topics
Scope and Applicability
- Defines protocol and switching requirements at stage three of service specification (based on CCITT I.130 methodology)
- Applies exclusively to international ISDN interconnections using SS7/ISUP v3
- National network procedures are not specifically addressed, though references for national implementations are included for informative purposes
Calling Line Identification Restriction (CLIR)
- Describes how the CLIR service is signaled and executed within the ISUP protocol at the originating and destination exchanges
- Ensures that the calling party’s number remains hidden, as mandated by subscriber preference or legal requirements
- Supports universal telecommunication services, including voice and data calls
Integration with Other Standards and Recommendations
- Incorporates modifications to ITU-T Recommendation Q.731, clause 4 (1993)
- References coverage at other specification stages (service description, functional capabilities, and information flows)
Coding and Protocol Compatibility
- Recommends specific coding for compatibility information within signaling parameters
- Addresses how information elements related to CLIR are carried and interpreted across network boundaries
Applications
The standard is highly relevant in several practical telecommunication settings:
International ISDN Connectivity
- Enables seamless privacy signaling for international calls, allowing subscribers’ CLIR preferences to be upheld across multiple operators and jurisdictions
Telecom Operator Interoperability
- Ensures that different public network operators implement CLIR consistently, reducing service discrepancies and improving user experience
Compliance with Privacy Regulations
- Empowers carriers to fulfill legislative and regulatory obligations related to subscriber data protection, particularly regarding caller identity disclosure
Service Assurance and Testing
- Provides a clear basis for protocol conformance and interoperability testing, supporting reliable service rollouts and ongoing maintenance
Related Standards
Organizations and implementers referencing SIST EN 300 356-4 V3.1.3:2003 may also consult the following standards for broader ISDN and supplementary service integration:
- EN 300 356-1: ISUP v3 for basic services
- EN 300 356-2: ISUP v3 supplementary services
- ETS 300 090: CLIR service description
- ETS 300 091: CLIP and CLIR functional capabilities and information flows
- ETS 300 093-1: CLIR Digital Subscriber Signalling System No. 1 (DSS1) protocol specification
- ETS 300 121: ISUP v1 for international ISDN interconnections
- EN 300 403-1: DSS1 protocol for circuit-mode basic call control
- ITU-T Recommendation Q.731, clause 4 (1993): International guidelines for CLIR implementation
For organizations aiming for robust, interoperable ISDN networks, SIST EN 300 356-4 V3.1.3:2003 is an essential resource for implementing and managing the Calling Line Identification Restriction supplementary service at the international level. Adhering to its provisions promotes secure, privacy-compliant communications in the global telecommunications environment.
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Frequently Asked Questions
SIST EN 300 356-4 V3.1.3:2003 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Integrated Services Digital Network (ISDN); Signalling System No.7; ISDN User Part (ISUP) version 3 for the international interface; Part 4: Calling Line Identification Restriction (CLIR) supplementary service [ITU-T Recommendation Q.731, clause 4 (1993), modified]". This standard covers: Additional generic procedures to those in basic call for use in this supplementary service.
Additional generic procedures to those in basic call for use in this supplementary service.
SIST EN 300 356-4 V3.1.3:2003 is classified under the following ICS (International Classification for Standards) categories: 33.080 - Integrated Services Digital Network (ISDN). The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 300 356-4 V3.1.3:2003 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.Integrated Services Digital Network (ISDN); Signalling System No.7; ISDN User Part (ISUP) version 3 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 3.1.3SIST EN 300 356-4 V3.1.3:2003en01-december-2003SIST EN 300 356-4 V3.1.3:2003SLOVENSKI
STANDARD
EN 300 356-4 V3.1.3 (1998-08)European Standard (Telecommunications series)Integrated Services Digital Network (ISDN);Signalling System No.7;ISDN User Part (ISUP) version 3 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 V3.1.3:2003
ETSIEN 300 356-4 V3.1.3 (1998-08)2ReferenceREN/SPS-01039-4 (3ap01ie0.PDF)KeywordsISDN, ISUP, SS7, supplementary service, CLIRETSIPostal addressF-06921 Sophia Antipolis Cedex - FRANCEOffice address650 Route des Lucioles - Sophia AntipolisValbonne - FRANCETel.: +33 4 92 94 42 00
Fax: +33 4 93 65 47 16Siret N° 348 623 562 00017 - NAF 742 CAssociation à but non lucratif enregistrée à laSous-Préfecture de Grasse (06) N° 7803/88Internetsecretariat@etsi.frhttp://www.etsi.frhttp://www.etsi.orgCopyright NotificationNo part may be reproduced except as authorized by written permission.The copyright and the foregoing restriction extend to reproduction in all media.© European Telecommunications Standards Institute 1998.All rights reserved.SIST EN 300 356-4 V3.1.3:2003
ETSIEN 300 356-4 V3.1.3 (1998-08)3Intellectual Property RightsIPRs essential or potentially essential to the present document may have been declared to ETSI. The informationpertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be foundin SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respectof ETSI standards", which is available free of charge from the ETSI Secretariat. Latest updates are available on theETSI Web server (http://www.etsi.fr/ipr or http://www.etsi.org/ipr).Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guaranteecan be given as to the existence of other IPRs not referenced in SR 000 314 (or the updates on the ETSI Web server)which are, or may be, or may become, essential to the present document.ForewordThis European Standard (Telecommunications series) has been produced by ETSI Technical Committee SignallingProtocols and Switching (SPS).The present document is part 4 of a multi-part EN covering the ISDN User Part (ISUP) version 3 for the internationalinterface, as identified below:Part 1:"Basic services";Part 2:"ISDN supplementary services";Part 3:"Calling Line Identification Presentation (CLIP) supplementary service";Part 4:"Calling Line Identification Restriction (CLIR) supplementary service";Part 5:"Connected Line Identification Presentation (COLP) supplementary service";Part 6:"Connected Line Identification Restriction (COLR) supplementary service";Part 7:"Terminal Portability (TP) supplementary service";Part 8:"User-to-User Signalling (UUS) supplementary service";Part 9:"Closed User Group (CUG) supplementary service";Part 10:"Subaddressing (SUB) supplementary service";Part 11:"Malicious Call Identification (MCID) supplementary service";Part 12:"Conference Call, add-on (CONF) supplementary service";Part 14:"Explicit Call Transfer (ECT) supplementary service";Part 15:"Diversion supplementary services";Part 16:"Call Hold (HOLD) supplementary service";Part 17:"Call Waiting (CW) supplementary service";Part 18:"Completion of Calls to Busy Subscriber (CCBS) supplementary service";Part 19:"Three party (3PTY) supplementary service".Part 20:"Completion of Calls on No Reply (CCNR) supplementary service";Part 31:"Protocol Implementation Conformance Statement (PICS) proforma specification for basic services"Part 32:"Test Suite Structure and Test Purposes (TSS&TP) specification for basic services"Part 33:"Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT)proforma specification for basic services"Part 34:"Protocol Implementation Conformance Statement (PICS) proforma specification for supplementaryservices"Part 35:"Test Suite Structure and Test Purposes (TSS&TP) specification for supplementary services"Part 36:"Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT)proforma specification for supplementary services"NOTE:Part 13 has not been issued.SIST EN 300 356-4 V3.1.3:2003
ETSIEN 300 356-4 V3.1.3 (1998-08)4In accordance with CCITT Recommendation I.130, the following three level structure is used to describe thesupplementary telecommunication services as provided by European public telecommunications operators under thepan-European Integrated Services Digital Network (ISDN):-Stage 1: is an overall service description, from the user's stand-point;-Stage 2: identifies the functional capabilities and information flows needed to support the service described instage 1; and-Stage 3: defines the signalling system protocols and switching functions needed to implement the servicedescribed in stage 1.The present document details the stage three aspects (signalling system protocols and switching functions) needed tosupport the Calling Line Identification Restriction (CLIR) supplementary service. The stage 1 and stage 2 aspects aredetailed in ETS 300 090 and ETS 300 091, respectively.National transposition datesDate of adoption of this EN:7 August 1998Date of latest announcement of this EN (doa):30 November 1998Date of latest publication of new National Standardor endorsement of this EN (dop/e):31 May 1999Date of withdrawal of any conflicting National Standard (dow):31 May 1999Endorsement noticeThe text of ITU-T Recommendation Q.731, clause 4 (1993), was approved by ETSI as an EN with agreed modificationsas given below.NOTE:New or modified text is indicated using sidebars. In addition, underlining and/or strike-out a
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