SIST EN 300 356-9 V3.1.3:2003

• Abstract:

  Additional generic procedures to those in basic call for use in this supplementary service.

• Status: Published
• Publication Date: 30-Nov-2003
• ICS: 33.080 - Integrated Services Digital Network (ISDN)
• Technical Committee: SS EIT - Technical Board for the electrotechnical, information technology and telecommunications fields
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Dec-2003
• Due Date: 01-Dec-2003
• Completion Date: 01-Dec-2003
• Ref Project: ETSI EN 300 356-9 V3.1.3 (1998-08) - Integrated Services Digital Network (ISDN); Signalling System No.7; ISDN User Part (ISUP) version 3 for the international interface; Part 9: Closed User Group (CUG) supplementary service [ITU-T Recommendation Q.735, clause 1 (1993), modified]

SIST EN 300 356-9 V3.1.3:2003 is the Slovenian adoption of ETSI EN 300 356-9 V3.1.3 for Integrated Services Digital Network (ISDN) signaling. It specifies the stage 3 signaling procedures and switching functions for the Closed User Group (CUG) supplementary service on the Signalling System No.7 (SS7) ISDN User Part (ISUP) international interface. It is written for people who implement, operate, test, or procure ISDN switching and signaling behavior.

What does SIST EN 300 356-9 V3.1.3:2003 specify?

SIST EN 300 356-9 V3.1.3:2003 specifies the stage 3 aspects of the CUG supplementary service for pan-European ISDN over ISUP. In practice, that means it defines the protocol procedures and switching functions needed to support the service on the international interface.

The document is part 9 of a multi-part EN 300 356 series for ISUP version 3. The front matter and endorsement notice show that the text is organized around the scope, normative references, and a set of global modifications to ITU-T Recommendation Q.735, clause 1.

The standard also states what it does not cover:

• additional protocol requirements when the service is provided through a non-ISDN network
• additional protocol requirements for the national signalling interface

It also keeps the international-interface specification focused on messages, signals, codes, formats, and exchange actions, while marking some items for national use as informative.

What are the key requirements of SIST EN 300 356-9 V3.1.3:2003?

The core requirement is that SIST EN 300 356-9 V3.1.3:2003 defines the CUG service at stage 3 level, so implementers must follow the signaling behavior, message handling, and switching actions needed to make the service work between networks. That matters because it is the part of the service description that drives actual network behavior.

Service behavior

The CUG supplementary service lets users form restricted groups. Members of a given Closed User Group can communicate with each other, but access to and from users outside the group is generally restricted. A user may belong to more than one CUG.

Scope boundaries

SIST EN 300 356-9 V3.1.3:2003 applies to the international interface of ISUP and not to the national signalling interface. It also says that extra protocol requirements for non-ISDN networks are outside its scope. For a network operator, that means this standard supports international interconnection design, but local or non-ISDN adaptations must be handled elsewhere.

Retained international-interface details

The standard keeps the specification of functions, message formats, codes, and local-exchange actions for the international interface. Items marked for national use are included for information, and if a national or operator network supports them, the standard proposes that they be supported in that same way.

Relationship to the base service model

The document ties the CUG service to the three-stage telecommunications service model from CCITT Recommendation I.130:

• Stage 1 - service description from the user point of view
• Stage 2 - functional capabilities and information flows
• Stage 3 - signalling protocols and switching functions

That matters because this standard covers only the implementation layer, while the service description and information flow aspects are defined in companion documents.

Modified ITU-T text

The adopted EN text modifies ITU-T Recommendation Q.735, clause 1. The endorsement notice states that it adds Scope and Normative references text, updates several references, and removes selected items, figures, and an appendix. Implementers should use the EN text rather than the original clause layout.

What terms does SIST EN 300 356-9 V3.1.3:2003 define?

• Integrated Services Digital Network (ISDN) - the digital network environment for which the service is specified.
• Signalling System No.7 (SS7) - the signalling system used to carry the ISUP procedures.
• ISDN User Part (ISUP) - the SS7 user part used for ISDN call and supplementary-service signaling.
• Closed User Group (CUG) - a group of users with restricted access for communication within the group.
• Stage 3 - the level that defines signalling protocols and switching functions needed to implement the service.
• International interface - the interconnection point the standard targets between networks.
• Digital Subscriber Signalling System No. one (DSS1) - the signalling system named in the reference list as a related protocol area.

Who uses SIST EN 300 356-9 V3.1.3:2003?

Telecom network operators, switching engineers, protocol developers, and conformance testers use this standard when they need CUG behavior to work correctly across international ISUP interconnections. It is also relevant to buyers and quality managers who need to check whether an equipment or network design supports the required ISDN supplementary-service signaling.

What changed in SIST EN 300 356-9 V3.1.3:2003 compared with ITU-T Recommendation Q.735, clause 1?

The EN text keeps the ITU-T basis but applies agreed modifications. The endorsement notice states that it inserts Scope and Normative references at the start of clause 1, replaces several references with ETS/EN equivalents, deletes specific sub-items, deletes figures 1-2/Q.735 to 1-4/Q.735, and deletes Appendix I.

Which standards are used with SIST EN 300 356-9 V3.1.3:2003?

Reference	What it contributes
CCITT Recommendation I.130	The three-stage method used to characterize ISDN supplementary services
ETS 300 121	International ISDN interconnections using ISUP version 1
ETS 300 136	CUG service description
ETS 300 137	CUG functional capabilities and information flows
ETS 300 138-1	DSS1 protocol for the CUG supplementary service
EN 300 356-1	ISUP version 3 basic services
EN 300 356-2	ISUP version 3 ISDN supplementary services
EN 300 403-1	DSS1 signalling network layer for circuit-mode basic call control

The standard also says that non-specific references to an ETS are to be read as later EN versions with the same number.

What does the SIST EN 300 356-9 V3.1.3:2003 document contain?

The document contains the modified text of ITU-T Recommendation Q.735, clause 1, for the CUG supplementary service. It includes the scope statement, reference list, and the specific global modifications that adapt the ITU-T text for the European ISDN international interface.

It also contains the reference substitution table that maps original ITU-T and CCITT references to ETS/EN counterparts. That table is important for implementers because it shows which companion documents govern the related ISDN and ISUP behavior.

The document further records the deletion of selected sub-items, figures, and Appendix I from the original ITU-T clause. For testers and implementers, that means the EN text is the operative version for the adopted European specification.

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 9: Closed User Group (CUG) supplementary service [ITU-T Recommendation Q.735, clause 1 (1993), modified]33.080Digitalno omrežje z integriranimi storitvami (ISDN)Integrated Services Digital Network (ISDN)ICS:Ta slovenski standard je istoveten z:EN 300 356-9 Version 3.1.3SIST EN 300 356-9 V3.1.3:2003en01-december-2003SIST EN 300 356-9 V3.1.3:2003SLOVENSKI
STANDARD
EN 300 356-9 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 9: Closed User Group (CUG)supplementary service[ITU-T Recommendation Q.735, clause 1 (1993), modified]SIST EN 300 356-9 V3.1.3:2003

ETSIEN 300 356-9 V3.1.3 (1998-08)2ReferenceREN/SPS-01039-9 (3aq91ie0.PDF)KeywordsISDN, ISUP, SS7, supplementary service, CUGETSIPostal addressF-06921 Sophia Antipolis Cedex - FRANCEOffice address650 Route des Lucioles - Sophia AntipolisValbonne - FRANCETel.: [phone]
Fax: [phone]Siret N° 348 623 562 00017 - NAF 742 CAssociation à but non lucratif enregistrée à laSous-Préfecture de Grasse (06) N° 7803/[e-mail]://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 300 356-9 V3.1.3:2003

ETSIEN 300 356-9 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 9 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 300 356-9 V3.1.3:2003

ETSIEN 300 356-9 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 Closed User Group (CUG) supplementary service. The stage 1 and stage 2 aspects are detailed inETS 300 136 and ETS 300 137, 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 Recommenda
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