SIST EN 300 771-1 V2.0.1:2005

• Abstract:

  To endorse in ETSI the amendment producedd in the ITU-T to q.2971 (Point-to-Multipoint for call/bearer control).

• Status: Published
• Publication Date: 31-Dec-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-Jan-2005
• Due Date: 01-Jan-2005
• Completion Date: 01-Jan-2005
• Ref Project: ETSI EN 300 771-1 V2.0.1 (2000-04) - Broadband Integrated Services Digital Network (B-ISDN); Digital Subscriber Signalling System No. two (DSS2) protocol; B-ISDN user-network interface layer 3 specification for point-to-multipoint call/bearer control; Part 1: Protocol specification [ITU-T Recommendation Q.2971 (1995), modified]

SIST EN 300 771-1 V2.0.1:2005 is the SIST adoption of the ETSI European Standard for the Broadband Integrated Services Digital Network (B-ISDN) Digital Subscriber Signalling System No. two (DSS2) protocol. It specifies the layer 3 protocol for point-to-multipoint call/bearer control at the TB reference point, for equipment that supports connection-oriented basic B-ISDN telecommunication services.

What does SIST EN 300 771-1 V2.0.1:2005 specify?

SIST EN 300 771-1 V2.0.1:2005 specifies stage three signalling for point-to-multipoint, unidirectional, single bearer connection release basic telecommunication services in B-ISDN using DSS2. In practice, this means the document covers the protocol procedures and switching functions needed at the user-network interface.

The foreword identifies this EN as part 1 of a six-part series:

• Part 1 - Protocol specification
• Part 2 - Protocol Implementation Conformance Statement (PICS) proformas
• Part 3 - Test Suite Structure and Test Purposes (TSS&TP) for the user
• Part 4 - Abstract Test Suite (ATS) and partial PIXIT proformas for the user
• Part 5 - TSS&TP for the network
• Part 6 - ATS and partial PIXIT proformas for the network

What are the key requirements of SIST EN 300 771-1 V2.0.1:2005?

The standard defines how point-to-multipoint B-ISDN bearer control works at the TB reference point and at the coincident SB and TB reference point. That matters because implementers must support the same signalling behaviour on public B-ISDN access and on private B-ISDN access.

Main protocol requirements

• Clause 1 sets the scope as stage three control for on-demand connection-oriented point-to-multipoint service. This tells designers that the document is about actual protocol behaviour, not just service descriptions.
• Clause 2 ties the standard to I.130, I.413, ETS 300 437-1, EN 300 443-1, ETS 300 685-1, and the supplementary service parts. In practice, conforming equipment has to follow those companion specifications where the procedure depends on them.
• Clause 3 states that ETSI uses the term bearer instead of connection where the text refers to a bearer for a connection-oriented bearer service. That keeps implementation and documentation terminology aligned.
• Clause 8.2.4 and related text use the cause values in Q.2610 as modified by ETS 300 685-1. This affects release and rejection handling, so interworking equipment must map cause codes consistently.
• Clauses 9 and 10 define the add-party and drop-party procedures, including ADDPARTY, ADDPARTYACKNOWLEDGE, ADDPARTYREJECT, PARTYALERTING, DROPPARTY, DROPPARTYACKNOWLEDGE, RELEASE, and RELEASE COMPLETE handling. In practice, these state-machine rules drive conformance testing and switch behaviour.
• The same clauses define timer-based actions such as T399 expiry and the use of T398 during dropping procedures. That matters because timeout handling changes how calls clear and what cause is returned.
• Clause 12 applies ETS 300 770-1 when the Closed User Group (CUG) supplementary service interacts with this service. Implementers supporting both features need to apply the supplementary service rules together.

What terms does SIST EN 300 771-1 V2.0.1:2005 define?

• B-ISDN - Broadband Integrated Services Digital Network, the broadband network environment addressed by the standard.
• DSS2 - Digital Subscriber Signalling System No. two, the signalling protocol used at the user-network interface.
• UNI - User-Network Interface, the interface where the subscriber side and network side exchange signalling.
• TB reference point - The access reference point used for the service description in this standard, including the coincident SB and TB case.
• PICS - Protocol Implementation Conformance Statement, the proforma used to state which features an implementation supports.
• ATS - Abstract Test Suite, the structured test material used for conformance testing.
• PIXIT - Partial Protocol Implementation eXtra Information for Testing, the implementation-specific information needed to run the tests.
• CUG - Closed User Group, a supplementary service whose interaction with this standard is addressed by clause 12.

Who uses SIST EN 300 771-1 V2.0.1:2005?

ETSI, telecom equipment vendors, and network engineers use this standard when implementing DSS2 signalling for B-ISDN access. Test laboratories use it to build conformance tests from the PICS, TSS&TP, ATS, and PIXIT parts. Operators and integrators use it when they need point-to-multipoint bearer control that works with the published signalling procedures.

What changed in SIST EN 300 771-1 V2.0.1:2005 from the previous edition?

Annex ZA compares this EN with EN 300 771-1 (1999) and shows the changes introduced by the corrigendum to Q.2971. The listed changes include inserted endpoint reference and endpoint state tables, a new note limiting the use of "negotiation" to the two stated broadband negotiation contexts, revised add-party and drop-party procedures, updated cause handling, and updated SDL and appendix figures.

The standard also records that Annex A is deleted, while Annexes B, C, D, and E are normative and Annex F is informative.

Which standards are used with SIST EN 300 771-1 V2.0.1:2005?

Reference	What it contributes
CCITT Recommendation I.130	Method for characterizing ISDN services and network capabilities
ITU-T Recommendation I.413	B-ISDN user-network interface reference framework
ETSI ETS 300 437-1	SSCF support for signalling at the UNI
ETSI EN 300 443-1	Basic call/bearer control for DSS2, used for several modified references
ETSI ETS 300 685-1	Cause and location usage in DSS2 and B-ISUP
ETSI ETS 300 661-1 to ETS 300 668-1	DSS2 supplementary service protocol parts used when those services interact with this standard
ETSI ETS 300 770-1	Closed User Group supplementary service
ITU-T Recommendation Q.2971 corrigendum 1	The access-signalling corrections and text changes endorsed by this EN

What does the SIST EN 300 771-1 V2.0.1:2005 document contain?

This part contains the protocol specification text for point-to-multipoint call/bearer control, including the procedural state handling for adding and dropping parties. It also includes tables for endpoint reference information, endpoint state information, and additional causes, plus SDL process material for Call-Control-N and Call-Control-U.

Appendix figures show the party dropping and party leaves call behaviour. The annexes and appendices support implementation, test development, and conformance checking rather than describing a user-level service only.

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.MHQR@Broadband Integrated Services Digital Network (B-ISDN); Digital Subscriber Signalling System No. two (DSS2) protocol; B-ISDN user-network interface layer 3 specification for point-to-multipoint call/bearer control; Part 1: Protocol specification [ITU-T Recommendation Q.2971 (1995), modified]33.080Digitalno omrežje z integriranimi storitvami (ISDN)Integrated Services Digital Network (ISDN)ICS:Ta slovenski standard je istoveten z:EN 300 771-1 Version 2.0.1SIST EN 300 771-1 V2.0.1:2005en01-januar-2005SIST EN 300 771-1 V2.0.1:2005SLOVENSKI
STANDARD
ETSIEN300771-1V2.0.1(2000-04)EuropeanStandard(Telecommunicationsseries)BroadbandIntegratedServicesDigitalNetwork(B-ISDN);DigitalSubscriberSignallingSystemNo.two(DSS2)protocol;B-ISDNuser-networkinterfacelayer3specificationforpoint-to-multipointcall/bearercontrol;Part1:Protocolspecification[ITU-TRecommendationQ.2971(1995),modified]SIST EN 300 771-1 V2.0.1:2005

ETSIETSIEN300771-1V2.0.1(2000-04)2ReferenceREN/SPAN-05217Keywordsbearer,B-ISDN,control,DSS2,layer3,protocol,UNIImportantnoticeThisETSIdeliverablemaybemadeavailableinmorethanoneelectronicversionorinprint.Inanycaseofexistingorperceiveddifferenceincontentsbetweensuchversions,thereferenceversionisthePortableDocumentFormat(PDF).Incaseofdispute,thereferenceshallbetheprintingonETSIprintersofthePDFversionkeptonaspecificnetworkdrivewithinETSISecretariat.Usersofthisdocumentshouldbeawarethatthedocumentmaybesubjecttorevisionorchangeofstatus.InformationonthecurrentstatusofthisandotherETSIdocumentsisavailableathhttp://www.etsi.org/tb/status/CopyrightNotificationNopartmaybereproducedexceptasauthorizedbywrittenpermission.Thecopyrightandtheforegoingrestrictionextendtoreproductioninallmedia.©EuropeanTelecommunicationsStandardsInstitute2000.Allrightsreserved.ETSIPostaladdressF-06921SophiaAntipolisCedex-FRANCEOfficeaddress650RoutedesLucioles-SophiaAntipolisValbonne-FRANCETel.:[phone]Fax:[phone]SiretN°34862356200017-NAF742CAssociationàbutnonlucratifenregistréeàlaSous-PréfecturedeGrasse(06)N°7803/[e-mail]ETSIdeliverablecanbedownloadedfromhttp://www.etsi.orgIfyoufinderrorsinthepresentdocument,sendyourcommentto:[e-mail] EN 300 771-1 V2.0.1:2005

ETSIETSIEN300771-1V2.0.1(2000-04)3IntellectualPropertyRightsIPRsessentialorpotentiallyessentialtothepresentdocumentmayhavebeendeclaredtoETSI.TheinformationpertainingtotheseessentialIPRs,ifany,ispubliclyavailableforETSImembersandnon-members,andcanbefoundinSR000314:"IntellectualPropertyRights(IPRs);Essential,orpotentiallyEssential,IPRsnotifiedtoETSIinrespectofETSIstandards",whichisavailablefromtheETSISecretariat.LatestupdatesareavailableontheETSIWebserver(http://www.etsi.org/ipr).PursuanttotheETSIIPRPolicy,noinvestigation,includingIPRsearches,hasbeencarriedoutbyETSI.NoguaranteecanbegivenastotheexistenceofotherIPRsnotreferencedinSR000314(ortheupdatesontheETSIWebserver)whichare,ormaybe,ormaybecome,essentialtothepresentdocument.ForewordThisEuropeanStandard(Telecommunicationsseries)hasbeenproducedbyETSITechnicalCommitteeServicesandProtocolsforAdvancedNetworks(SPAN).Thepresentdocumentispart1ofamulti-partENcoveringtheBroadbandIntegratedServicesDigitalNetwork(B-ISDN);DigitalSubscriberSignallingSystemNo.two(DSS2)protocol;B-ISDNuser-networkinterfacelayer3specificationforpoint-to-multipointcall/bearercontrol,asdescribedbelow:Part1:"Protocolspecification[ITU-TRecommendationQ.2971(1995),modified]";Part2:"ProtocolImplementationConformanceStatement(PICS)proformaspecification";Part3:"TestSuiteStructureandTestPurposes(TSS&TP)specificationfortheuser";Part4:"AbstractTestSuite(ATS)andpartialProtocolImplementationeXtraInformationforTesting(PIXIT)proformaspecificationfortheuser";Part5:"TestSuiteStructureandTestPurposes(TSS&TP)specificationforthenetwork";Part6:"AbstractTestSuite(ATS)andpartialProtocolImplementationeXtraInformationforTesting(PIXIT)proformaspecificationforthenetwork".NationaltranspositiondatesDateofadoptionofthisEN:21April2000DateoflatestannouncementofthisEN(doa):31July2000DateoflatestpublicationofnewNationalStandardorendorsementofthisEN(dop/e):31January2001DateofwithdrawalofanyconflictingNationalStandard(dow):31January2001EndorsementnoticeTheelementsofITU-TRecommendationQ.2971(1995),modifiedbyitscorrigendum1[15](1999)apply,withthefollowingmodifications:SIST EN 300 771-1 V2.0.1:2005

ETSIETSIEN300771-1V2.0.1(2000-04)4Page1,clause1Replaceclause1by:1ScopeThepresentdocumentspecifiesthestagethreeofon-demandconnection-orientedpoint-to-multipointunidirectionalsinglebearerconnectionrelease1basictelecommunicationservicesforthepan-EuropeanBroadbandIntegratedServicesDigitalNetwork(B-ISDN)asprovidedattheTBreferencepointorcoincidentSBandTBreferencepoint(asdefinedinITU-TRecommendationI.413[2])bymeansoftheDigitalSubscriberSignallingSystemNo.two(DSS2)protocol.Stagethreeidentifiestheprotocolproceduresandswitchingfunctionsneededtosupportatelecommunicationsservice(seeCCITTRecommendationI.130[1]).Inaddition,thepresentdocumentspecifiestheprotocolrequirementsattheTBreferencepointwheretheserviceisprovidedtotheuserviaaprivateB-ISDN.NOTE:ProceduresattheTBreferencepoint,tosupporttheaccessofaprivateB-ISDNtothepublicB-ISDN,arenotexplicitlyidentifiedinthepresentdocument,however,someproceduresareapplicableonlyattheTBreferencepoint.AbasicTelecommunicationsserviceisaservicetowhichsupplementaryservicesmaybeadded.Furtherpartsofthepresentdocumentprovidethemethodoftestinganddetailedapplicationspecificrequirementstodetermineconformancetothepresentdocument.Thepresentdocumentisapplicabletoequipmentsupportingconnection-orientedbasicB-ISDNtelecommunicationservices,tobeattachedateithersideofaTBreferencepointorcoincidentSBandTBreferencepointswhenusedasanaccesstothepublicB-ISDN.Page1,clause2Replaceclause2by:2ReferencesThefollowingdocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthepresentdocument.• Referencesareeitherspecific(identifiedbydateofpublication,editionnumber,versionnumber,etc.)ornon-specific.• Foraspecificreference,subsequentrevisionsdonotapply.• Foranon-specificreference,thelatestversionapplies.• Anon-specificreferencetoanETSshallalsobetakentorefertolaterversionspublishedasanENwiththesamenumber.[1]CCITTRecommendationI.130(1988):"MethodforthecharacterizationoftelecommunicationservicessupportedbyanISDNandnetworkcapabilitiesofanISDN".[2]ITU-TRecommendationI.413(1993):"B-ISDNuser-networkinterface".[3]ETSIETS300437-1:"BroadbandIntegratedServicesDigitalNetwork(B-ISDN);SignallingATMAdaptationLayer(SAAL);ServiceSpecificCo-ordinationFunction(SSCF)forsupportofsignallingattheUser-NetworkInterface(UNI);Part1:SpecificationofSSCFatUNI[ITU-TRecommendationQ.2130(1995),modified]".SIST EN 300 771-1 V2.0.1:2005

ETSIETSIEN300771-1V2.0.1(2000-04)5[4]ETSIEN300443-1:"BroadbandIntegratedServicesDigitalNetwork(B-ISDN);DigitalSubscriberSignallingSystemNo.two(DSS2)protocol;B-ISDNuser-networkinterfacelayer3specificationforbasiccall/bearercontrol;Part1:Protocolspecification[ITU-TRecommendationQ.2931(1995),modified]".[5]ETSIETS300661-1:"BroadbandIntegratedServicesDigitalNetwork(B-ISDN);DigitalSubscriberSignallingSystemNo.two(DSS2)protocol;DirectDiallingIn(DDI)supplementaryservice;Part1:Protocolspecification[ITU-TRecommendationQ.2951,clause1(1995),modified]".[6]ETSIETS300662-1:"BroadbandIntegratedServicesDigitalNetwork(B-ISDN);DigitalSubscriberSignallingSystemNo.two(DSS2)protocol;MultipleSubscriberNumber(MSN)supplementaryservice;Part1:Protocolspecification[ITU-TRecommendationQ.2951,clause2(1995),modified]".[7]ETSIETS300663-1:"BroadbandIntegratedServicesDigitalNetwork(B-ISDN);DigitalSubscriberSignallingSystemNo.two(DSS2)protocol;CallingLineIdentificationPresentation(CLIP)supplementaryservice;Part1:Protocolspecification[ITU-TRecommendationQ.2951,clause3(1995),modified]".[8]ETSIETS300664-1:"BroadbandIntegratedServicesDigitalNetwork(B-ISDN);DigitalSubscriberSignallingSystemNo.two(DSS2)protocol;CallingLineIdentificationRestriction(CLIR)supplementaryservice;Part1:Protocolspecification[ITU-TRecommendationQ.2951,clause4(1995),modified]".[9]ETSIETS300665-1:"BroadbandIntegratedServicesDigitalNetwork(B-ISDN);DigitalSubscriberSignallingSystemNo.two(DSS2)protocol;ConnectedLineIdentificationPresentation(COLP)supplementaryservice;Part1:Protocolspecification[ITU-TRecommendationQ.2951,clause5(1995),modified]".[10]ETSIETS300666-1:"BroadbandIntegratedServicesDigitalNetwork(B-ISDN);DigitalSubscriberSignallingSystemNo.two(DSS2)protocol;ConnectedLineIdentificationRestriction(COLR)supplementaryservice;Part1:Protocolspecification[ITU-TRecommendationQ.2951,clause6(1995),modified]".[11]ETSIETS300667-1:"BroadbandIntegratedServicesDigitalNetwork(B-ISDN);DigitalSubscriberSignallingSystemNo.two(DSS2)protocol;Subaddressing(SUB)supplementaryservice;Part1:Protocolspecification[ITU-TRecommendationQ.2951,clause8(1995),modified]".[12]ETSIETS300668-1:"BroadbandIntegratedServicesDigitalNetwork(B-ISDN);DigitalSubscriberSignallingSystemNo.two(DSS2)protocol;User-to-UserSignalling(UUS)supplementaryservice;Part1:Protocolspecification[ITU-TRecommendationQ.2957,clause1(1995),modified]".[13]ETSIETS300685-1:"BroadbandIntegratedServicesDigitalNetwork(B-ISDN);UsageofcauseandlocationinDigitalSubscriberSignallingSystemNo.two(DSS2)andSignallingSystemNo.7B-ISDNUserPart(B-ISUP)[ITU-TRecommendationQ.2610(1995),modified]".[14]ETSIETS300770-1:"BroadbandIntegratedServicesDigitalNetwork(B-ISDN);DigitalSubscriberSignallingSystemNo.two(DSS2)protocol;ClosedUserGroup(CUG)supplementaryservice;Part1:Protocolspecification[ITU-TRecommendationQ.2955.1(1996),modified]".[15]ITU-TRecommendationQ.2971(1999)corrigendum1:"SwitchingandsignallingBroadbandISDN;B-ISDNapplicationprotocolsforaccesssignalling".SIST EN 300 771-1 V2.0.1:2005

ETSIETSIEN300771-1V2.0.1(2000-04)6ThroughoutthetextofITU-TRecommendationQ.2971Replacereferencesasshowninthefollowingtable:ReferenceQ.2971ModifiedreferenceITU-TRecommendationQ.2130ITU-TRecommendationQ.2130asmodifiedbyETS300437-1[3]ITU-TRecommendationQ.2610ITU-TRecommendationQ.2610asmodifiedbyETS300685[13]ITU-TRecommendationQ.2931ITU-TRecommendationQ.2931asmodifiedbyEN300443-1[4]ITU-TRecommendationQ.2951.1ITU-TRecommendationQ.2951.1asmodifiedbyETS300661-1[5]ITU-TRecommendationQ.2951.2ITU-TRecommendationQ.2951.2asmodifiedbyETS300662-1[6]ITU-TRecommendationQ.2951.3ITU-TRecommendationQ.2951.3asmodifiedbyETS300663-1[7]ITU-TRecommendationQ.2951.4ITU-TRecommendationQ.2951.4asmodifiedbyETS300664-1[8]ITU-TRecommendationQ.2951.5ITU-TRecommendationQ.2951.5asmodifiedbyETS300665-1[9]ITU-TRecommendationQ.2951.6ITU-TRecommendationQ.2951.6asmodifiedbyETS300666-1[10]ITU-TRecommendationQ.2951.8ITU-TRecommendationQ.2951.8asmodifiedbyETS300667-1[11]ITU-TRecommendationQ.2955.1ITU-TRecommendationQ.2955.1asmodifiedbyETS300770-1[14]ITU-TRecommendationQ.2957.1ITU-TRecommendationQ.2957.1asmodifiedbyETS300668-1[12]Page2,clause3Addthefollowingnote:NOTE:ITU-TRecommendationsfrequentlyusetheterm"connection".ETSIhasdecidedtousetheterm"bearer"instead(i.e.ifthistermisusedinthecontextofabearerforaconnection-orientedbearerservice).Page16,subclause8.2.4Thecausevaluesin3.2/Q.2610asmodifiedbyETS300685[13]areapplicable.Page23,subclause9.5.3.2.1,item(d)Replacethereference"5.6.7.2/Q.2931"by"5.6.7.1/Q.2931asmodifiedbyEN300443-1".Page35,clause12Addthefollowingtext:InteractionwiththeCUGsupplementaryservice:ETS300770-1[14]shallapply.Page36,annexADeleteannexA.ItdoesnotformpartofthisETS.Page37,annexBAnnexBhasthestatusofanormativeannex.SIST EN 300 771-1 V2.0.1:2005

ETSIETSIEN300771-1V2.0.1(2000-04)7Page37,annexCAnnexChasthestatusofanormativeannex.Page46,annexDAnnexDhasthestatusofanormativeannex.Page51,annexEAnnexEhasthestatusofanormativeannex.Page53,annexFAnnexFhasthestatusofaninformativeannex.Page85,Call-Control-N(sheet28of39)Replace"RELEASEreq."by"Releasereq.".Page104,Party-Control-N(sheet9of13),statesPN1,PN2,PN3,PN4,PN6andPN7TheDROPPARTYmessageshallonlybeabletobereceivedbyaParty-Control-NprocessinthestatesPN2,PN3,PN4,PN7.Page161,Party-Co
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