SIST EN 300 356-14 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 300 356-14 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 14: Explicit Call Transfer (ECT) supplementary service [ITU-T Recommendation Q.732, clause 7 (1996) and implementors guide (1998) modified]

SIST EN 300 356-14 V4.2.1:2004 is the Slovenian adoption of ETSI EN 300 356-14 V4.2.1 for Integrated Services Digital Network (ISDN) signalling over Signalling System No.7 (SS7). It specifies the stage 3 protocol procedures and switching functions for the Explicit Call Transfer (ECT) supplementary service on the international ISDN User Part (ISUP) interface, for engineers and operators who implement or verify ISDN network behaviour.

What does SIST EN 300 356-14 V4.2.1:2004 specify?

SIST EN 300 356-14 V4.2.1:2004 specifies the stage 3 definition of the ECT supplementary service for pan-European ISDN using SS7 ISUP. In practice, it is the protocol-level document that network implementers use when they need the international interface behaviour for call transfer.

The document is organized around a scope section, a references section, the modified text drawn from ITU-T Recommendation Q.732 clause 7 and the implementors guide, and informative Annex ZA.

Annex	What it covers
ZA	Coding of the compatibility information

What are the key requirements of SIST EN 300 356-14 V4.2.1:2004?

The core requirement in SIST EN 300 356-14 V4.2.1:2004 is to define the stage 3 signalling and switching behaviour needed to support ECT. That means implementers have to align message handling, exchange actions, and compatibility coding with the ETSI-modified ITU-T material.

Scope and application

The standard applies to the international interconnection case for ISDN over SS7 ISUP. It also states that ECT is applicable to all circuit-switched telecommunication services, so it is not limited to a single call type.

The document says charging aspects are outside scope. For a buyer or network planner, that means this standard is about call-control behaviour, not tariffing or billing rules.

Service behaviour

ECT is described as a supplementary service that lets a user with two calls, each incoming or outgoing, connect the other users in those calls into one call. In practical terms, this is the call-transfer behaviour the network has to support.

The document also states that stage 3 covers the protocol procedures and switching functions, while stage 1 and stage 2 are covered in EN 300 367 and EN 300 368. This helps readers separate user-facing service description from network implementation details.

Network and interface handling

The document retains the specification of functions, message formats, codes, and actions at originating and destination local exchanges for the international interface. It also includes formats, codes, and procedures marked for national use for informative purposes.

Where such national items are supported in a national network and an operator’s network, the document proposes that they be supported in that same way. This matters when comparing national implementation choices with the international interface.

Modified references and protocol dependencies

The text replaces several ITU-T references with ETSI-modified versions, including Q.730, Q.761, Q.762, Q.763, Q.764, Q.767 and Q.931. In practice, this tells implementers which versions to use when applying the ECT procedures.

Subclause 7.5 adds a note that the global call reference associated with the call on the transferred leg is for further study. That flags an implementation topic that is not fully settled in this text.

Compatibility information

Annex ZA gives recommended coding for compatibility information, including the call transfer number, call transfer reference, generic notification, loop prevention indicators, service activation, facility message, and loop prevention message. For implementers, this is the part to consult when encoding or checking interworking information fields.

What terms does SIST EN 300 356-14 V4.2.1:2004 define?

• Explicit Call Transfer (ECT) - A supplementary service that connects the other users of two existing calls into one call.
• Integrated Services Digital Network (ISDN) - The digital network context in which the supplementary service is specified.
• Signalling System No.7 (SS7) - The signalling system used to carry the ISDN User Part procedures.
• ISDN User Part (ISUP) - The SS7 part that defines call-control signalling for ISDN interconnection.
• Stage 1 - The overall service description from the user’s standpoint.
• Stage 2 - The functional capabilities and information flows needed to support the service.
• Stage 3 - The signalling system protocols and switching functions needed to implement the service.

Who uses SIST EN 300 356-14 V4.2.1:2004?

SIST EN 300 356-14 V4.2.1:2004 is used by telecommunications operators, switch and signalling equipment vendors, and network engineers who implement ISDN interconnection on SS7. It is also relevant to conformance, interoperability, and specification work where ECT behaviour has to be checked against the international interface.

The document’s foreword shows that it belongs to a multi-part deliverable for ISUP version 4, so it is also used by teams working across related basic and supplementary service parts.

What changed in SIST EN 300 356-14 V4.2.1:2004 from the previous edition?

The document history shows the earlier publications identified as Edition 1 (V3.1.3), V4.1.1, and a V4.2.1 publication sequence before this version. This edition is the V4.2.1 publication of the ECT part in the ISUP version 4 series.

Which standards are used with SIST EN 300 356-14 V4.2.1:2004?

• ITU-T Recommendation I.130 - Used for the three-level description model of telecommunication services.
• ETSI ETS 300 121 - Used as the reference for ISUP version 1 over international ISDN interconnections.
• ETSI EN 300 356-1 - Provides the modified ISUP version 4 basic services reference.
• ETSI EN 300 356-2 - Provides the modified ISDN supplementary service reference used in the table of replaced references.
• ETSI EN 300403-1 - Provides the modified Q.931 reference for circuit-mode basic call control.
• ETSI EN 300 367 - Gives the ECT service description at stage 1.
• ETSI EN 300 368 - Gives the ECT functional capabilities and information flows at stage 2.

What does the SIST EN 300 356-14 V4.2.1:2004 document contain?

The document contains the ETSI endorsement notice for ITU-T Recommendation Q.732 clause 7 and the 1998 implementors guide, with modified references and added scope text. It includes a reference table that maps ITU-T documents to their ETSI-modified counterparts.

Annex ZA provides recommended coding for compatibility information parameters and message compatibility information. The body text also includes a specific note in subclause 7.5 about the global call reference for the transferred leg.

This makes the document useful for protocol implementation, interoperability testing, and review of signalling behaviour at the international ISDN interface.

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 14: Explicit Call Transfer (ECT) supplementary service [ITU-T Recommendation Q.732, clause 7 (1996) and implementors guide (1998) 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 4.2.1SIST EN 300 356-14 V4.2.1:2004en01-april-2004SIST EN 300 356-14 V4.2.1:2004SLOVENSKI
STANDARD
ETSIEN300356-14V4.2.1(2001-07)EuropeanStandard(Telecommunicationsseries)IntegratedServicesDigitalNetwork(ISDN);SignallingSystemNo.7(SS7);ISDNUserPart(ISUP)version4fortheinternationalinterface;Part14:ExplicitCallTransfer(ECT)supplementaryservice[ITU-TRecommendationQ.732,clause7(1996)andimplementorsguide(1998)modified]SIST EN 300 356-14 V4.2.1:2004

ETSIETSIEN300356-14V4.2.1(2001-07)2ReferenceREN/SPAN-01082-14KeywordsISDN,ISUP,SS7,supplementaryservice,ECT,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 300 356-14 V4.2.1:2004

ETSIETSIEN300356-14V4.2.1(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).Thepresentdocumentispart14ofamulti-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 300 356-14 V4.2.1:2004

ETSIETSIEN300356-14V4.2.1(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)neededtosupporttheExplicitCallTransfer(ECT)supplementaryservice.Thestage1andstage2aspectsaredetailedinEN300367[6]andEN300368[7],respectively.NationaltranspositiondatesDateofadoptionofthisEN:13July2001DateoflatestannouncementofthisEN(doa):31October2001DateoflatestpublicationofnewNationalStandardorendorsementofthisEN(dop/e):30April2002DateofwithdrawalofanyconflictingNationalStandard(dow):30April2002EndorsementnoticeTheelementsofITU-TRecommendationQ.732,clause7(1996)andimplementorsguide(1998)apply,withthefollowingmodifications.NOTE:Newormodifiedtextisindicatedusingsidebars.Inaddition,underliningand/orstrike-outareusedtohighlightdetailedmodificationswherenecessary.SIST EN 300 356-14 V4.2.1:2004

ETSIETSIEN300356-14V4.2.1(2001-07)5GlobalmodificationstoITU-TRecommendationQ.732,clause7andImplementorsguide(1998)Insertthefollowingtwoclauses(ScopeandReferences)atthestartofclause7.ScopeThepresentdocumentspecifiesthestagethreeoftheExplicitCallTransfer(ECT)supplementaryserviceforthepan-EuropeanIntegratedServicesDigitalNetwork(ISDN)asprovidedbytheEuropeanpublictelecommunicationsoperatorsbymeansoftheSignallingSystemNo.7protocolfortheISDNUserPart(ISUP).Stagethreeidentifiestheprotocolproceduresandswitchingfunctionsneededtosupportatelecommunicationservice(seeITU-TRecommendationI.130[1]).Thepresentdocumentdoesnotspecifytheadditionalprotocolrequireme
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