SIST EN 302 091-1 V1.1.3:2005
(Main)Broadband Integrated Services Digital Network (B-ISDN) and Broadband Private Integrated Services Network (B-PISN); Digital Subscriber Signalling System No. two (DSS2), Broadband Inter-Exchange Signalling (B-QSIG), and Signalling System No. 7 (SS7); Prenegotiation; Part 1: Protocol specification
General Information
- Abstract
Procedures for prenegotiation of bearer connections and bearer connect ion parameters at call control level prior to the establishment of tho se bearer connections by bearer control; specification of a prenegotia tion operation; applicable at an interface at reference point TB,, coi ncident SB and TB or QB This WPS is an update of an earlier WPS drafted in March 1996, work is carried out in cooperation with ECMA TC 32 TG 15
- Status
- Published
- Publication Date
- 31-Dec-2004
- 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
Overview
SIST EN 302 091-1 V1.1.3:2005 establishes the protocol specification for prenegotiation procedures within broadband ISDN (B-ISDN) and Broadband Private Integrated Services Network (B-PISN) environments. Covering the Digital Subscriber Signalling System No. two (DSS2), Broadband Inter-Exchange Signalling (B-QSIG), and Signalling System No. 7 (SS7), this standard enables effective compatibility and availability checks for bearer connections before actual connection establishment at the call control level.
Designed for both public and private broadband networks, the standard defines mechanisms and procedures that allow network entities and users to prenegotiate bearer connection parameters-such as bandwidth and Quality of Service (QoS)-without immediately reserving network resources. This optimizes network resource allocation and increases efficiency in large-scale and multi-party telecommunication environments. The protocol operates at well-defined interface reference points (QB, SB, TB, or coincident SB/TB).
Key Topics
- Prenegotiation Procedures: Enables users to check the compatibility and availability of bearer connections during call setup, ensuring seamless service delivery without network resource reservation.
- Supported Environments: Applicable to both two-party and multi-party broadband calls (including point-to-multipoint configurations) across private and public ISDN networks.
- Signalling Protocols: Integrates with B-QSIG, DSS2, and SS7 signalling systems to support a wide range of broadband ISDN and B-PISN interworking scenarios.
- Interface Reference Points: Procedures specified for interfaces at reference points QB, SB, TB, or coincident SB/TB, ensuring compatibility throughout layered network architectures.
- Parameter Negotiation: Allows detailed negotiation of bearer connection parameters such as:
- ATM adaptation layer
- ATM and OAM traffic descriptors
- QoS requirements
- Broadband/narrowband capabilities
- Protocol Flexibility: Supports user-driven and network-driven parameter negotiation flows for robust call establishment, with support for both initial call setup and additional bearer connection negotiation during an active call.
- Error Handling: Defines clear responses and error signalling when proposals are unsupported, unavailable, or incompatible.
Applications
SIST EN 302 091-1 V1.1.3:2005 is pivotal for:
- Telecom Network Operators: Enables intelligent bearer connection management and pre-call compatibility verification, reducing failed connections and optimizing resource utilization.
- PBX/ISPBX Implementers: Supports robust multi-party conferencing, call redirection, and service integration in broadband private networks.
- Service Providers: Facilitates seamless service continuity and interconnection between disparate ISDN and broadband systems.
- System Integrators and Testers: Provides the protocol framework needed for developing, integrating, and validating network equipment capable of sophisticated signalling and prenegotiation.
- Interworking Gateways: Assists in mapping broadband bearer capabilities across networks that may or may not support prenegotiation procedures, thereby enhancing interoperability.
Key benefits of implementation include increased reliability of connection establishment, better bandwidth allocation, and improved user experience across complex broadband telecommunications networks.
Related Standards
For a comprehensive signalling and bearer management solution, SIST EN 302 091-1 V1.1.3:2005 references and is complemented by:
- EN 302 092-1: Call control in a separated call and bearer control environment
- EN 302 093-1: Bearer control protocol specification in multi-connection environments
- ECMA-254: B-QSIG-GF (Generic Functional Protocol)
- ISO/IEC 13247: Broadband PISN Inter-exchange signalling protocol - Basic call/connection control
- EN 300 443-1: DSS2 protocol specification for call/bearer control
- ETS 300 796-1: Core aspects of DSS2 protocol
- ITU-T Recommendations I.327, X.680, X.690, X.880, Z.100: International reference points, ASN.1 notation, encoding rules, and SDL for specification language
Implementing SIST EN 302 091-1 V1.1.3:2005 ensures compliance with European telecommunications standards for broadband ISDN and B-PISN, supporting advanced signalling, improved resource management, and scalable multi-service integration in modern broadband networks.
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Frequently Asked Questions
SIST EN 302 091-1 V1.1.3:2005 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Broadband Integrated Services Digital Network (B-ISDN) and Broadband Private Integrated Services Network (B-PISN); Digital Subscriber Signalling System No. two (DSS2), Broadband Inter-Exchange Signalling (B-QSIG), and Signalling System No. 7 (SS7); Prenegotiation; Part 1: Protocol specification". This standard covers: Procedures for prenegotiation of bearer connections and bearer connect ion parameters at call control level prior to the establishment of tho se bearer connections by bearer control; specification of a prenegotia tion operation; applicable at an interface at reference point TB,, coi ncident SB and TB or QB This WPS is an update of an earlier WPS drafted in March 1996, work is carried out in cooperation with ECMA TC 32 TG 15
Procedures for prenegotiation of bearer connections and bearer connect ion parameters at call control level prior to the establishment of tho se bearer connections by bearer control; specification of a prenegotia tion operation; applicable at an interface at reference point TB,, coi ncident SB and TB or QB This WPS is an update of an earlier WPS drafted in March 1996, work is carried out in cooperation with ECMA TC 32 TG 15
SIST EN 302 091-1 V1.1.3:2005 is classified under the following ICS (International Classification for Standards) categories: 33.040.35 - Telephone networks; 33.080 - Integrated Services Digital Network (ISDN). The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 302 091-1 V1.1.3:2005 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.SHFLILNDFLMDSURWRNRODBroadband Integrated Services Digital Network (B-ISDN) and Broadband Private Integrated Services Network (B-PISN); Digital Subscriber Signalling System No. two (DSS2), Broadband Inter-Exchange Signalling (B-QSIG), and Signalling System No. 7 (SS7); Prenegotiation; Part 1: Protocol specification33.080Digitalno omrežje z integriranimi storitvami (ISDN)Integrated Services Digital Network (ISDN)33.040.35Telefonska omrežjaTelephone networksICS:Ta slovenski standard je istoveten z:EN 302 091-1 Version 1.1.3SIST EN 302 091-1 V1.1.3:2005en01-januar-2005SIST EN 302 091-1 V1.1.3:2005SLOVENSKI
STANDARD
ETSIEN302091-1V1.1.3(1999-11)EuropeanStandard(Telecommunicationsseries)BroadbandIntegratedServicesDigitalNetwork(B-ISDN)andBroadbandPrivateIntegratedServicesNetwork(B-PISN);DigitalSubscriberSignallingSystemNo.two(DSS2),BroadbandInter-ExchangeSignalling(B-QSIG),andSignallingSystemNo.7(SS7);Prenegotiation;Part1:ProtocolspecificationSIST EN 302 091-1 V1.1.3:2005
ETSIETSIEN302091-1V1.1.3(1999-11)2ReferenceDEN/SPS-05131-1(jd090ie0.PDF)KeywordsB-ISUP,broadband,ISDN,ISPBX,protocol,QSIG,SS7,B-ISDN,DSS2,B-QSIGETSIPostaladdressF-06921SophiaAntipolisCedex-FRANCEOfficeaddress650RoutedesLucioles-SophiaAntipolisValbonne-FRANCETel.:+33492944200Fax:+33493654716SiretN°34862356200017-NAF742CAssociationàbutnonlucratifenregistréeàlaSous-PréfecturedeGrasse(06)N°7803/88Internetsecretariat@etsi.frIndividualcopiesofthisETSIdeliverablecanbedownloadedfromhttp://www.etsi.orgIfyoufinderrorsinthepresentdocument,sendyourcommentto:editor@etsi.frImportantnoticeThisETSIdeliverablemaybemadeavailableinmorethanoneelectronicversionorinprint.Inanycaseofexistingorperceiveddifferenceincontentsbetweensuchversions,thereferenceversionisthePortableDocumentFormat(PDF).Incaseofdispute,thereferenceshouldbetheprintingonETSIprintersofthePDFversionkeptonaspecificnetworkdrivewithinETSISecretariat.CopyrightNotificationNopartmaybereproducedexceptasauthorizedbywrittenpermission.Thecopyrightandtheforegoingrestrictionextendtoreproductioninallmedia.©EuropeanTelecommunicationsStandardsInstitute1999.Allrightsreserved.SIST EN 302 091-1 V1.1.3:2005
ETSIETSIEN302091-1V1.1.3(1999-11)3ContentsIntellectualPropertyRights.5Foreword.51Scope.62References.63Definitions.73.1Externaldefinitions.73.2Additionaldefinitions.74Abbreviations.75Description.85.1Overview.85.2ProtocolmodelforPRN.96Operationalrequirements.97Primitivedefinitionsandstatedefinitions.107.1Serviceprimitives.107.2PRNstates.107.2.1PRNIdle.107.2.2PRNInitiated.107.2.3PRNDelivered.107.2.4PRNPresent.107.2.5PRNReceived.108Codingrequirements.108.1AbstractdefinitionofthePRNoperations.109PRNprocedures.129.1General.129.2ProceduresatanoriginatingorterminatingCCentity.129.2.1InvokingthePRNoperationbytheinitiatingCCentity.129.2.1.1InvocationofPRN-relationtocallestablishment.139.2.1.2InvocationofPRN-relationtobearerconnectionestablishment.139.2.1.3ContentsofthePRNproposal.139.2.2RespondingtothePRNinvocation.159.2.3CompletionofPRN.169.2.4Errorhandling.169.2.5Crossingofbearerestablishmentmessageswithprenegotiation-relatedAPDUs.169.3ProceduresatatransitCCentity.1610Interactions.1611InterworkingwithnetworksnotsupportingPRN.1711.1CallsfromothernetworkstoanetworksupportingPRN.1711.2CallstoothernetworksnotsupportingPRN.17SIST EN 302 091-1 V1.1.3:2005
ETSIETSIEN302091-1V1.1.3(1999-11)412SDLDiagrams.17AnnexA(informative):Informationflowdiagrams.23A.1Prenegotiation.23A.2PRNwithoptionalPRNAlert.24AnnexB(informative):Objectidentifiersdefinedinthepresentdocument.25Bibliography.26History.27SIST EN 302 091-1 V1.1.3:2005
ETSIETSIEN302091-1V1.1.3(1999-11)5IntellectualPropertyRightsIPRsessentialorpotentiallyessentialtothepresentdocumentmayhavebeendeclaredtoETSI.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)hasbeenproducedbyETSITechnicalCommitteeSignallingProtocolsandSwitching(SPS)incollaborationwithECMATC32-TG15.Thepresentdocumentispart1ofamulti-partstandardcoveringtheDigitalSubscriberSignallingSystemNo.2(DSS2),BroadbandInter-ExchangeSignalling(B-QSIG),andSignallingSystemNo.7(SS7)protocolspecificationforBroadbandIntegratedServicesDigitalNetwork(B-ISDN)andBroadbandPrivateIntegratedServicesNetwork(B-PISN)Prenegotiation,asdescribedbelow:Part1:"Protocolspecification";Part2:"ProtocolImplementationConformanceStatement(PICS)proformaspecification";Part3:"TestSuiteStructureandTestPurposes(TSS&TP)specification";Part4:"AbstractTestSuite(ATS)andpartialProtocolImplementationeXtraInformationforTesting(PIXIT)proformaspecification".NationaltranspositiondatesDateofadoptionofthisEN:5November1999DateoflatestannouncementofthisEN(doa):29February2000DateoflatestpublicationofnewNationalStandardorendorsementofthisEN(dop/e):31August2000DateofwithdrawalofanyconflictingNationalStandard(dow):31August2000SIST EN 302 091-1 V1.1.3:2005
ETSIETSIEN302091-1V1.1.3(1999-11)61ScopeThepresentdocumentspecifiesthesignallingprotocolforthepurposeofprenegotiationattheQB,SB,TBandco-incidentSB/TBreferencepointswithin,betweenandattheaccesstoBroadbandPrivateIntegratedServicesNetworksandwithin,betweenandattheaccesstopublicEuropeanBroadbandIntegratedServicesDigitalNetworks.Theprotocoloperatesbetweentwoadjacentcallcontrolentities.Theprotocolisapplicableinaseparatedcallandbearer(connection)controlenvironmentforthesupportofcallshavingnone,oneormultiplebearers.Theprotocolisapplicabletoatwo-partycalloramulti-partycall.However,prenegotiationisperformedbetweentwoparties.Incaseofmulti-partyconnections(point-to-multipointconnections),prenegotiationmaybeperformedbetweentherootandthefirstparty.TheQBreferencepointisdefinedinISO/IEC11579-1[11].TheSBandTBreferencepointsaredefinedinITU-TRecommendationI.327[12].ThepresentdocumentisbasedonthetransportcapabilitiesasdefinedinETS300796-1[4]andECMA-254[1],andiscloselyrelatedtothecallcontrolprotocolspecificationasdefinedinEN302092-1[5].Thepurposeofprenegotiationasspecifiedinthepresentdocumentistoallowausertocheckcompatibilityandavailabilityattheremoteuserwithregardtooneormoreconnectionstheuserintendstoestablishduringthelifetimeofthecall,withoutreservingconnection-orientedresourcesinthenetwork.Reservationofconnection-orientedresourcesattheremoteuserisoutsidethescopeofthepresentdocument.2ReferencesThefollowingdocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthepresentdocument.•Referencesareeitherspecific(identifiedbydateofpublication,editionnumber,versionnumber,etc.)ornon-specific.•Foraspecificreference,subsequentrevisionsdonotapply.•Foranon-specificreference,thelatestversionapplies.•Anon-specificreferencetoanETSshallalsobetakentorefertolaterversionspublishedasanENwiththesamenumber.[1]ECMA-254:"B-PISN-Inter-ExchangeSignallingProtocol-GenericFunctionalProtocol(B-QSIG-GF)".[2]ISO/IEC13247:"Informationtechnology-Telecommunicationsandinformationexchangebetweensystems-BroadbandPrivateIntegratedServicesNetwork-Inter-exchangesignallingprotocol-Basiccall/connectioncontrol".[3]EN300443-1:"BroadbandIntegratedServicesDigitalNetwork(B-ISDN);DigitalSubscriberSignallingSystemNo.two(DSS2)protocol;B-ISDNuser-networkinterfacelayer3specificationforbasiccall/bearercontrol;Part1:Protocolspecification[ITU-TRecommendationQ.2931(1995),modified]".[4]ETS300796-1:"BroadbandIntegratedServicesDigitalNetwork(B-ISDN);DigitalSubscriberSignallingSystemNo.two(DSS2)protocol;Genericfunctionalprotocol;Coreaspects;Part1:Protocolspecification[ITU-TRecommendationQ.2932.1(1996),modified]".[5]EN302092-1:"BroadbandIntegratedServicesDigitalNetwork(B-ISDN)andBroadbandPrivateIntegratedServicesNetwork(B-PISN);DigitalSubscriberSignallingSystemNo.two(DSS2),BroadbandInter-ExchangeSignalling(B-QSIG),andSignallingSystemNo.7(SS7);Callcontrolinaseparatedcallandbearercontrolenvironment;Part1:Protocolspecification".[6]EN302093-1:"BroadbandIntegratedServicesDigitalNetwork(B-ISDN);DigitalSubscriberSignallingSystemNo.two(DSS2)protocol;Point-to-pointmulticonnectionbearercontrolspecificationinaseparatedcallandbearerenvironment;Part1:Protocolspecification".SIST EN 302 091-1 V1.1.3:2005
ETSIETSIEN302091-1V1.1.3(1999-11)7[7] ITU-TRecommendationX.680:"Informationtechnology-AbstractSyntaxNotationOne(ASN.1):Specificationofbasicnotation".[8] ITU-TRecommendationX.690:"Informationtechnology-ASN.1encodingrules:SpecificationofBasicEncodingRules(BER),CanonicalEncodingRues(CER)andDistinguishedEncodingRules(DER)".[9] ITU-TRecommendationX.880:"Informationtechnology-Remoteoperations:concepts,modelandnotation".[10] ITU-TRecommendationZ.100:"CCITTspecificationanddescriptionlanguage(SDL)".[11] ISO/IEC11579-1:"Informationtechnology-Telecommunicationsandinformationexchangebetweensystems-Privateintegratedservicesnetwork-Part1:ReferenceconfigurationforPISNExchanges(PINX)".[12] ITU-TRecommendationI.327:"B-ISDNfunctionalarchitecture".3 Definitions3.1 ExternaldefinitionsThedefinitionsusedinECMA-254[1],ISO/IEC13247[2],EN300443-1[3],ETS300796-1[4]andEN302092-1[5]apply.3.2 AdditionaldefinitionsForthepurposesofthepresentdocumentthefollowingadditionaldefinitionapplies:prenegotiation:useractionofcheckingcompatibilityandavailabilityattheremoteuserwithregardtooneormorebearerconnectionstheuserintendstoestablishduringthelifetimeofthecall,withoutalreadyreservingbearerconnection-orientedresourcesinthenetwork4 AbbreviationsForthepurposesofthepresentdocument,theabbreviationsusedin[1],[2],[3],[4],[5]and[6]apply.Inaddition,thefollowingabbreviationsareused:CC CallControlPRN Prenegotiationmp modificationpossible(9.2.1.3,figure2)T/F True/False(9.2.1.3,figure2)UM UserMandatory(9.2.1.3,figure2)UO UserOptional(9.2.1.3,figure2)SIST EN 302 091-1 V1.1.3:2005
ETSIETSIEN302091-1V1.1.3(1999-11)85Description5.1OverviewThepresentdocumentspecifiestheprocedures,messages,informationelementsandcomponentsneededforthesupportofPrenegotiation(PRN).PRNisanoptionalprocedurewhichmaybeinvokedbyeitherthecallingorcalleduserateithertheSBortheco-incidentSB/TBreferencepoint.Inbothcases,itcanonlybeinvokedinconjunctionwithoraftercallestablishment.PRNdoesnotestablishconnections.PRNisperformedbetweentwousers.Incaseofpoint-to-multipointconnections,itmaybeperformedbetweentherootandthefirstparty.ThePRNprotocoloperatesbetweentwoadjacentcallcontrolentities(pointsofcallandbearerco-ordination).ItisnotrequiredthatthenetworkinterpretsandprocessesthecontentsofthePRNoperation,exceptthatincomingcallsegmentidentifierandbeareridentifiershavetobemappedtothecorrespondingvaluesontheoutgoingside.Thenetworkmayeitherrelaytherelatedinformation,orcallcontrolentitiesinthenetwork(s)mayalsobeinvolvedinlookingatvariousparametersofnetworkrelevanceandmaytakeaction/possiblyinterveneinthePRNprocedure.Possibleactions/interventionsofnetworknodesbasedontheinterpretationofthecontentsofthePRNoperationareoutsidethescopeofthepresentdocument.Ingeneral,allconnectionrelatedparametersforanynumberofconnectionscanbeprenegotiated.ThepurposeofPRNistocheckcompatibilityandavailabilitybetweentheuserswithoutalreadyreservingconnection-relatedresourcesinthenetwork.TheresponseofausertoaPRNrequestmaybe:-positive,ifauserisfullycompatiblewiththeparametersproposedbytheremoteparty-inthiscase,theconnectionsmaybeestablishedwiththeparametersasproposedbytheremoteparty;-positive,ifauserisnotfullycompatiblewiththeparametersproposedbytheremoteparty,butsupportsacompatiblealternative/subset-inthiscase,theconnectionsmaybeestablishedwiththoseparameterswhichwereproposedasanalternative;-negative,ifauserisnotcompatiblewiththeparametersproposedbytheremoteparty;-negative,ifauseriscompatiblewiththeparametersproposedbytheremoteparty,butthenegotiatedresourcesarecurrentlyunavailable.NOTE:IfPRNisperformedincombinationwithCallEstablishmenti.e.ifnoconnectionsareexisting/pending,thecallmightbereleasediftheresultofthePRNisnegative.ThePRNproceduresallowausertoreturneitheronlyoneorseveralalternativeacceptableparametersetsperconnection.SIST EN 302 091-1 V1.1.3:2005
ETSIETSIEN302091-1V1.1.3(1999-11)95.2ProtocolmodelforPRNForPRN,thebasicprotocolmodeloutlinedinfigure1-1ofETS300796-1[4]applies.Figure1showshowPRNfitsintothisbasicmodel.Itshouldbenotedthatfigure1onlyshowsthoseASEswhicharedirectlyrelatedtoPRN.PrenegotiationCallControlROSEGFT-ControlTransportmech.CoordinationfunctionTelecommunicationserviceapplicationSAALe.g.CO-BI(separated)Figure1:PRNwithintheB-QSIG/DSS2protocolmodel6OperationalrequirementsPRNmaybeusedwithinanenvironmentofmulticonnectioncalls.Insuchanenvironment,nospecificoperationalrequirementsexist,andPRNmaybeinvokedaccordingtotheproceduresofsubclause9.2.1.PRNisbasedonthetransportcapabilitiesasdefinedinETS300796-1[4]andECMA-254[1],andonthecallestablishmentproceduresasdefinedinEN302092-1[5].SIST EN 302 091-1 V1.1.3:2005
ETSIETSIEN302091-1V1.1.3(1999-11)107Primitivedefinitionsandstatedefinitions7.1ServiceprimitivesThefollowingservicesforPRNaredefined:PrenegotiateconfirmedPrenegotiation-AlertunconfirmedErrorindication7.2PRNstatesForthepurposeofPRNthefollowingadditionalstatesexistinaCallControlentity(CCentity).7.2.1PRNIdleNoPRNprocedureinvoked.7.2.2PRNInitiatedThisstateexistsataprecedingCCentitywhenarequestforPRNhasbeensenttothesucceedingCCentitybutnoresponsehasbeenreceived.7.2.3PRNDeliveredThisstateexistsataprecedingCCentitywhenithasreceivedanindicationthatPRNalertinghasbeeninitiated.7.2.4PRNPresentThisstateexistsatasucceedingCCentitythathasnotyetrespondedtoareceivedrequestforPRN.7.2.5PRNReceivedThisstateexistsatasucceedingCCentitywhenPRNalertinghasbeeninitiatedbutthePRNrequesthasnotyetbeenanswered.8Codingrequirements8.1AbstractdefinitionofthePRNoperationsTable1showsthedefinitionoftheoperations,errorsandtypesrequiredforPRNusingASN.1asdefinedinITU-TRecommendationsX.680[7]andusingtheOPERATIONandERRORobjectclassesasdefinedinITU-TRecommendationX.880[9].APDUsbasedontheseoperationsshallbeoftypesinvoke,returnResult,returnErrorandrejectasdefinedintableB.1ofETS300796-1[4].TheBasicEncodingRules(BER)asdefinedinITU-TRecommendationX.690[8]shallbeappliedtotheencodingofAPDUsbasedontheseoperationsanderrors.SIST EN 302 091-1 V1.1.3:2005
ETSIETSIEN302091-1V1.1.3(1999-11)11Table1:PRNoperationsanderrorsPrenegotiation-Operations-and-Errors{itu-tidentified-organizationetsi2091prenegotiation-operations-and-errors(1)}DEFINITIONSAUTOMATICTAGS::=BEGINEXPORTSpreNegotiate,PrenegotiationProposal,prenegotiationAlert;IMPORTSOPERATION,ERRORFROMRemote-Operations-Information-Objects{joint-iso-itu-tremote-operations(4)informationObjects(5)version1(0)}CallSegmentIdFROMCC-Operations{itu-tidentified-organizationetsi2092cc-operations(1)}BearerIdFROMCall-Object-Class-Definitions{itu-tidentified-organizationetsi2092call-object-class-definitions(5)};PrenegotiationOperationsOPERATION::={preNegotiate|prenegotiationAlert}preNegotiationOperationsDefinitionsOBJECTIDENTIFIER::={itu-tidentified-organizationetsi2091prenegotiation-operations-definitions(2)}preNegotiateOPERATION::={ARGUMENTSEQUENCE{prenegotiationProposalPrenegotiationProposal,callAssociationCHOICE{callSegmentIdCallSegmentId,callIdCallIdValue}}RESULTSEQUENCE{prenegotiationProposalPrenegotiationProposal,callAssociationCHOICE{callSegmentIdCallSegmentId,callIdCallIdValue}}RETURNRESULTTRUEERRORS{prenegotiateErrorSimple|prenegotiateErrorItemised}SYNCHRONOUSFALSEALWAYSRESPONDSTRUECODEglobal:{preNegotiationOperationsDefinitions1}}CallIdValue::=OCTETSTRING(SIZE(1.3))PrenegotiationProposal::=SEQUENCEOFConnectionProposalConnectionProposal::=SEQUENCE{connectionSubjectConnectionSubject,connectionReferenceConnectionNumber,connectionCallRelationUserMandatoryDEFAULTFALSE,bearerIdBearerIdOPTIONAL}ConnectionSubject::=CHOICE{connectionProposalProposal,connectionAcceptAccept}ConnectionNumber::=INTEGER(1.127)UserMandatory::=BOOLEANAccept::=SEQUENCE{acceptBOOLEAN,alternative
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