SIST EN 302 091-1 V1.1.3:2005

• 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
• ICS: 33.040.35 - Telephone networks
• 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 302 091-1 V1.1.3 (1999-11) - 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

SIST EN 302 091-1 V1.1.3:2005 is the Slovenian adoption of ETSI EN 302 091-1 V1.1.3 for Broadband Integrated Services Digital Network (B-ISDN) and Broadband Private Integrated Services Network (B-PISN) prenegotiation. It specifies the Prenegotiation (PRN) protocol used by call control entities to check compatibility and availability for bearer connections and bearer connection parameters before bearer control establishes them.

The standard applies to DSS2, B-QSIG and SS7 signalling at the QB, SB, TB and coincident SB/TB reference points. In practice, it tells implementers how PRN is invoked, what information is exchanged, how the receiving side answers, and how the protocol behaves when the remote network does not support PRN.

What does SIST EN 302 091-1 V1.1.3:2005 specify?

SIST EN 302 091-1 V1.1.3:2005 specifies the signalling protocol for prenegotiation between two adjacent Call Control (CC) entities. It is an optional procedure that can be used with call establishment or during the active phase of a call, and it does not itself establish bearer connections.

The document is organised into clauses on scope, references, definitions, abbreviations, protocol description, operational requirements, service primitives and states, ASN.1 coding, procedures, interactions, interworking, and SDL diagrams. It also has two informative annexes.

Annex	What it covers
Annex A	Information flow diagrams for PRN and PRN with optional PRN-Alert
Annex B	Object identifiers defined in the document

What are the key requirements of SIST EN 302 091-1 V1.1.3:2005?

PRN may be invoked by either the calling or called user at the SB or coincident SB/TB reference point, and also at the QB reference point within the defined environments. Clause 5 makes clear that PRN checks compatibility and availability without reserving network resources, so it is meant for planning bearer setup, not for allocating them early.

Invocation and timing

Clause 9.2.1 allows PRN to be invoked together with call establishment or later during the active phase of the call. The initiator may use an application-dependent timer T1, and the receiver may trigger PRN-Alert and an application-dependent timer T2 when human involvement is needed.

Proposal content

Clause 9.2.1.3 defines the PRN proposal as a set of connection proposals. Each proposed connection can be marked UserMandatory (UM), can include a most preferred proposal, and may include ordered alternatives; this tells the receiving side which parts are fixed and which may be changed.

Direction of bearer establishment

Clause 9.2.1.2 introduces BearerEstDirection to avoid both sides trying to establish the same bearer at once. The initiator can leave direction open, require self-establishment, require remote establishment, or prefer remote establishment, which gives both sides clear guidance on who should act next.

Response behaviour

Clause 9.2.2 allows the responding user to accept, accept an alternative, counter-propose, or reject the request. If the request cannot be satisfied, especially for a UM connection or when resources are unavailable, the responding CC entity sends a return error APDU.

Coding and protocol units

Clause 8 requires ASN.1 definitions and APDUs, with invoke, returnResult, returnError and reject forms encoded using Basic Encoding Rules (BER). For implementers, that means the protocol is not just a concept - it has a precise data encoding and message format for interworking.

Error and interworking handling

Clause 9.2.4 says invalid parameters in a prenegotiation proposal may be ignored and discarded. Clause 11 covers interworking with networks that do not support PRN, where the interworking unit may accept or reject the request depending on whether the prenegotiated capabilities can be mapped to compatible services.

What terms does SIST EN 302 091-1 V1.1.3:2005 define?

• Prenegotiation (PRN) - User action of checking compatibility and availability at the remote user for one or more bearer connections before reserving bearer resources.
• Call Control (CC) - The call-related control function that sends and receives PRN procedures and APDUs.
• UserMandatory (UM) - A flag showing that the remote user may answer positively only if the marked connection can be accepted, possibly with modification.
• BearerEstDirection - An indication of who should establish bearer connections, or whether no specific direction is required.
• modificationPossible (mp) - A label that tells the receiving user whether a proposed parameter may be changed.
• PRN-Alert - An unconfirmed service primitive and operation used when the responding side needs to alert a human user before answering.

Who uses SIST EN 302 091-1 V1.1.3:2005?

SIST EN 302 091-1 V1.1.3:2005 is used by vendors and integrators of B-ISDN and B-PISN call control, especially where DSS2, B-QSIG or SS7 signalling must support negotiated bearer setup. It is also relevant to gateway and interworking designers who have to map PRN into or out of networks that do not support it.

Testing and conformance teams use it together with the related PICS, TSS&TP, ATS and PIXIT parts named in the foreword. Quality managers and buyers use it to check whether a product or network element supports prenegotiation behaviour at the required reference points.

Which standards are used with SIST EN 302 091-1 V1.1.3:2005?

The standard depends on several referenced specifications:

• ECMA-254 and ETS 300 796-1 - provide the transport and generic functional protocol base for signalling messages.
• ISO/IEC 13247 and EN 300 443-1 - provide the basic call and bearer control information and the service-related information elements that may be prenegotiated.
• EN 302 092-1 - provides the call control procedures in the separated call and bearer control environment.
• EN 302 093-1 - provides the bearer control procedures used after PRN has produced an acceptable result.
• ITU-T X.680, X.690, X.880 and Z.100 - provide ASN.1, BER, remote operations and SDL notation.
• ISO/IEC 11579-1 and ITU-T I.327 - define the PISN reference configuration and the B-ISDN functional architecture.

What does the SIST EN 302 091-1 V1.1.3:2005 document contain?

The document contains an ASN.1 module for PRN operations and errors, including the preNegotiate and prenegotiationAlert operations. It also includes a detailed protocol model, service primitives, PRN states, procedure descriptions, and interaction rules for call control entities.

Its SDL diagrams show the behaviour of the PRN entity in the outgoing and incoming directions, including timer use, alerts, responses and error paths. Annex A adds information flow diagrams, and Annex B lists the object identifiers used in the ASN.1 definitions, which is useful for implementation and conformance work.

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.:[phone]Fax:[phone]SiretN°34862356200017-NAF742CAssociationàbutnonlucratifenregistréeàlaSous-PréfecturedeGrasse(06)N°7803/[e-mail]ETSIdeliverablecanbedownloadedfromhttp://www.etsi.orgIfyoufinderrorsinthepresentdocument,sendyourcommentto:[e-mail]Ideliverablemaybemadeavailableinmorethanoneelectronicversionorinprint.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
...