SIST EN 300 356-14 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 300 356-14 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 14: Explicit Call Transfer (ECT) supplementary service [ITU-T Recommendation Q.732, clause 7 (1996), modified]

SIST EN 300 356-14 V3.1.3:2003 is the Slovenian adoption of ETSI EN 300 356-14 Version 3.1.3. It specifies stage 3 signaling procedures and switching functions for the Explicit Call Transfer (ECT) supplementary service in the Integrated Services Digital Network (ISDN) using Signalling System No.7 (SS7) and the ISDN User Part (ISUP) on the international interface. Network operators, signaling engineers, equipment vendors, and test teams use it to implement and verify ECT behavior between circuit-switched ISDN networks.

What does SIST EN 300 356-14 V3.1.3:2003 specify?

SIST EN 300 356-14 V3.1.3:2003 specifies the stage 3 aspects of the ECT supplementary service for pan-European ISDN over ISUP. In practice, that means the document defines the protocol procedures and switching functions needed to support the service.

The scope also sets clear boundaries. It excludes the additional protocol requirements for offering the service through a telecommunications network that is not an ISDN, and it states that charging aspects are outside scope. Although the document is written for international interconnection, it retains the message functions, formats, codes, and exchange actions needed at originating and destination local exchanges.

Part of the document	What it covers
Scope and modified clause 7 text	Service definition, applicability, and protocol context
Normative references	The ETSI and ITU-T references used with this part
Annex ZA	Compatibility coding for parameters and messages

What are the key requirements of SIST EN 300 356-14 V3.1.3:2003?

The main requirement is that the ECT service be supported through ISUP stage 3 procedures. This matters because implementers must provide the signaling behavior that allows the service to work, not just the user-facing description.

• ECT function: a user who has two calls, incoming or outgoing, can connect the other users in those calls into one call. This is the service outcome the network has to realize.
• Service domain: the service applies to all circuit-switched telecommunication services. That tells operators where the signaling rules are intended to work.
• International interface focus: the specification is for the international interconnection, while still retaining exchange actions, formats, and codes used at local exchanges. This is important for gateway design and interworking.
• Non-ISDN access excluded: the document does not add the extra protocol rules needed when the service is offered through a network that is not ISDN. Readers should not use it as a complete specification for non-ISDN access.
• Reference substitution: the text replaces several ITU-T references with the ETSI-modified versions of EN 300 356-1, EN 300 356-2, ETS 300 121, and EN 300 403-1. This keeps implementations aligned with the ETSI version of the signaling stack.
• Compatibility coding: Annex ZA recommends coding for parameter and message compatibility information, including call transfer number, call transfer reference, generic notification, loop prevention indicators, service activation, facility messages, and loop prevention messages. This helps equipment handle supported and unsupported signaling elements consistently.

What terms does SIST EN 300 356-14 V3.1.3:2003 define?

• Integrated Services Digital Network (ISDN) - The circuit-switched telecommunication environment for which this part specifies ECT signaling.
• Signalling System No.7 (SS7) - The signaling system used to carry call-control information between exchanges.
• ISDN User Part (ISUP) - The SS7 protocol part that supports ISDN call signaling for the international interface.
• Explicit Call Transfer (ECT) - The supplementary service that lets a user connect the other participants of two calls into one call.
• Stage 3 - The level of service description that defines the signaling protocols and switching functions used to implement the service.
• Circuit-switched telecommunication services - The class of services to which ECT is stated to apply.
• Parameter compatibility information - Coding rules that help exchanges decide how to handle upgraded parameters during interworking.

Who uses SIST EN 300 356-14 V3.1.3:2003?

SIST EN 300 356-14 V3.1.3:2003 is used by European public telecommunications operators and by engineers who design or maintain ISDN signaling systems. It is also relevant for international gateway exchange designers, ISUP implementers, interoperability testers, and quality teams checking supplementary service behavior.

The foreword shows that ETSI Technical Committee Signalling Protocols and Switching (SPS) produced the document. That makes it especially relevant to people working on signaling protocol stacks, switching functions, and network interconnection.

Which standards are used with SIST EN 300 356-14 V3.1.3:2003?

• CCITT Recommendation I.130 - Provides the three-stage method used to characterize telecommunication services.
• ETS 300 121 - Supplies the ISUP version 1 baseline for international ISDN interconnections.
• EN 300 356-1 - Provides the modified ISUP basic services text and the referenced Q.761 to Q.764 material.
• EN 300 356-2 - Provides the modified ISUP supplementary services text and the referenced Q.730 material.
• EN 300 403-1 - Provides the DSS1 signaling network layer and the modified Q.931 material used for circuit-mode basic call control.

What does the SIST EN 300 356-14 V3.1.3:2003 document contain?

The document contains the modified text of ITU-T Recommendation Q.732, clause 7, together with added scope and normative references for this ETSI part. It also includes a reference-replacement table that tells readers which ITU-T references are to be read as ETSI-modified EN or ETS documents.

Annex ZA provides recommended coding for compatibility information. It covers both parameter compatibility and message compatibility, so implementers can code the call transfer-related parameters and messages in a way that supports interworking across exchanges.

The content is aimed at implementation and interoperability work: protocol design, switch behavior, gateway behavior, and conformance or interoperability testing.

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 14: Explicit Call Transfer (ECT) supplementary service [ITU-T Recommendation Q.732, clause 7 (1996), modified]33.080Digitalno omrežje z integriranimi storitvami (ISDN)Integrated Services Digital Network (ISDN)ICS:Ta slovenski standard je istoveten z:EN 300 356-14 Version 3.1.3SIST EN 300 356-14 V3.1.3:2003en01-december-2003SIST EN 300 356-14 V3.1.3:2003SLOVENSKI
STANDARD
EN 300 356-14 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 14: Explicit Call Transfer (ECT)supplementary service[ITU-T Recommendation Q.732, clause 7 (1996), modified]SIST EN 300 356-14 V3.1.3:2003

ETSIEN 300 356-14 V3.1.3 (1998-08)2ReferenceREN/SPS-01039-14 (3ari1ie0.PDF)KeywordsISDN, ISUP, SS7, supplementary service, ECTETSIPostal 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 300 356-14 V3.1.3:2003

ETSIEN 300 356-14 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 14 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 300 356-14 V3.1.3:2003

ETSIEN 300 356-14 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 Explicit Call Transfer (ECT) supplementary service. The stage 1 and stage 2 aspects are detailed inETS 300 367 and ETS 300 368, 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.732, clause 7 (1996), 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 are used tohighlight detailed modifications where necessary.SIST EN 300 356-14 V3.1.3:2003

ETSIEN 300 356-14 V3.1.3 (1998-08)5Global modifications to ITU-T Recommendation Q.732,clause 7Insert the following two clauses (Scope and Normative references) at the start of clause 7:1ScopeThis fourteenth part of EN 300 356 specifies the stage three of the Explicit Call Transfer (ECT) supplementary servicefor the pan-European Integrated Services Digital Network (ISDN) as provided by the European publictelecommunications operators by means of the Signalling System No.7 protocol for the ISDN User Part (ISUP). Stagethree identifies the protocol procedures and switching functions needed to support a telecommunication service (seeCCITT Recommendation I.130 [1]).The present document does not specify the additional protocol requirements where the service is provided to the user viaa telecommunications network that is not an ISDN.Although the present document applies only to the international interconnection, the specification of functions, formatsand codes of messages and signals, and actions performed at originating and destination local exchanges are retained.Formats, codes and procedures marked for national use are included for informative purposes for the internationalinterface specification. If these items so marked are supported within a national network and operator's network, then itis proposed that they shall be supported in this manner.NOTE:In the case where a national signalling system behaves differently, the international gateway exchange isto support both the concerned national and inter
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