SIST EN 300 940 V5.16.1:2005

• Abstract:

  CR SMG#31bis

• Status: Published
• Publication Date: 31-Jan-2005
• ICS: 33.070.01 - Mobile services in general
• Technical Committee: RES - Radio equipment and systems
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Feb-2005
• Due Date: 01-Feb-2005
• Completion Date: 01-Feb-2005
• Ref Project: ETSI EN 300 940 V5.16.1 (2000-10) - Digital cellular telecommunications system (Phase 2+) (GSM); Mobile radio interface; Layer 3 specification (GSM 04.08 version 5.16.1 Release 1996)

SIST EN 300 940 V5.16.1:2005 is the Slovenian adoption of ETSI EN 300 940 Version 5.16.1 for the GSM mobile radio interface Layer 3 specification. It defines the signaling between the mobile station and the network in the Digital cellular telecommunications system (Phase 2+) and is aimed at people implementing, integrating, testing, or verifying GSM radio-interface behavior.

What does SIST EN 300 940 V5.16.1:2005 specify?

SIST EN 300 940 V5.16.1:2005 specifies the Layer 3 procedures and message contents used on the GSM mobile radio interface. The standard is organized around scope material, references, definitions and abbreviations, Radio Resource management, Mobility Management, circuit-switched Call Control, support of packet services, worked examples of procedures, handling of protocol errors, and detailed message and information-element coding.

The scope clauses cover the interface structure, the structure of Layer 3 procedures, test procedures, the use of logical channels, an overview of control procedures, and the applicability of implementations. In practice, this tells implementers what signaling functions the document covers and where to find the procedure rules and message definitions that a GSM device or network element must follow.

What are the key requirements of SIST EN 300 940 V5.16.1:2005?

Radio Resource management procedures

SIST EN 300 940 V5.16.1:2005 defines Radio Resource (RR) procedures for idle mode, dedicated mode, group receive mode, and group transmit mode. It also covers access, paging, channel assignment, handover, frequency redefinition, ciphering mode setting, partial release, classmark handling, and RR connection release.

In practice, these procedures govern how a mobile station gets access to the network, moves between radio channels, changes transmission settings, and recovers from failures. Clause 3 also includes measurement reporting on SACCH and the handling of notifications and paging information, which are needed for mobility and radio-quality management.

Mobility Management procedures

SIST EN 300 940 V5.16.1:2005 defines Mobility Management (MM) state behavior for the mobile station and the network, including MM IDLE state handling and common procedures such as TMSI reallocation, authentication, identification, IMSI detach, abort, and MM information exchange. It also covers location updating, periodic updating, IMSI attach, generic location updating, MM connection establishment and release, and MM STATUS handling.

In practice, these rules control how the network recognizes a subscriber, updates the subscriber’s location, and keeps identity and security information aligned. Implementers need them to support registration and identity procedures consistently across the mobile station and the network.

Circuit-switched Call Control procedures

SIST EN 300 940 V5.16.1:2005 defines Call Control (CC) states and procedures for mobile-originating and mobile-terminating calls, call establishment, call clearing, call rearrangements, in-call modification, user notification, status procedures, progress handling, DTMF protocol control, and call re-establishment. It also includes support for Dual Services and CCBS-related procedures.

In practice, this is the signaling needed to set up, modify, and clear voice and other circuit-switched calls. The state descriptions matter because devices and networks must react in the right order to setup, alerting, connect, disconnect, release, and failure events.

Packet services and structured procedures

SIST EN 300 940 V5.16.1:2005 includes support for packet services and a section of examples of structured procedures. Those examples cover paging request, immediate assignment, service request and contention resolution, authentication, ciphering mode setting, transaction phase, channel release, and selected call and mobility cases.

In practice, this helps engineers understand complete signaling sequences rather than isolated messages. It is useful when building interoperability tests or tracing real network behavior.

Error handling and protocol robustness

SIST EN 300 940 V5.16.1:2005 defines how entities handle unknown, unforeseen, and erroneous protocol data. Clause 8 addresses short messages, unknown transaction identifiers, unknown message types, mandatory information-element errors, optional information-element errors, and other malformed message conditions.

In practice, these rules tell receivers how to behave when signaling is broken or incomplete. That matters for interoperability because two implementations must react predictably to unexpected network or handset messages.

Message coding and contents

SIST EN 300 940 V5.16.1:2005 gives the functional definitions and contents of the RR, MM, and CC messages, along with the general message format and information-element coding. Clause 10 covers the protocol discriminator, transaction identifier, message type, and the coding of common and procedure-specific information elements.

In practice, this is the part used to encode and decode actual Layer 3 messages on the air interface. It is the reference for implementers who need to build or verify message fields, not just procedure flow.

What terms does SIST EN 300 940 V5.16.1:2005 define?

• Global System for Mobile communications (GSM) - The cellular system for which the Layer 3 signaling rules are written.
• Radio Resource (RR) - The part of Layer 3 that controls radio access, channel use, and connection handling.
• Mobility Management (MM) - The signaling layer that manages subscriber identity, registration, location updating, and related control.
• Call Control (CC) - The signaling layer that manages call setup, modification, and clearing.
• Temporary Mobile Subscriber Identity (TMSI) - A temporary subscriber identity used in MM procedures to reduce repeated use of the permanent identity.
• International Mobile Subscriber Identity (IMSI) - The permanent subscriber identity used in attach, detach, and updating procedures.
• Voice Group Call Service (VGCS) - The group-call service referenced in RR procedures and messages.
• Voice Broadcast Service (VBS) - The broadcast-call service referenced in RR procedures and messages.

Who uses SIST EN 300 940 V5.16.1:2005?

SIST EN 300 940 V5.16.1:2005 is used by GSM equipment vendors, network operators, test laboratories, and system integrators. Engineers use it to implement signaling between the mobile station and the network, quality managers use it to check interoperability and procedure coverage, and buyers use it to confirm that a product supports the required GSM Layer 3 behavior.

It is also relevant in certification, conformance testing, protocol validation, and troubleshooting of radio-interface signaling for GSM Phase 2+ equipment.

What does the SIST EN 300 940 V5.16.1:2005 document contain?

SIST EN 300 940 V5.16.1:2005 contains detailed procedure descriptions, state behavior, and message definitions for GSM Layer 3 signaling. It includes structured procedure examples for paging, authentication, handover, call establishment, call clearing, DTMF control, and call re-establishment.

The document also contains extensive message content definitions for RR, MM, and CC messages, including the coding of identities, channel descriptions, location-area information, measurement results, ciphering-related fields, and paging octets. These parts are used when designing protocol software, checking interoperability, and tracing signaling exchanges in tests or field investigations.

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Digital cellular telecommunications system (Phase 2+) (GSM); Mobile radio interface; Layer 3 specification (GSM 04.08 version 5.16.1 Release 1996)33.070.01Mobilni servisi na splošnoMobile services in generalICS:Ta slovenski standard je istoveten z:EN 300 940 Version 5.16.1SIST EN 300 940 V5.16.1:2005en01-februar-2005SIST EN 300 940 V5.16.1:2005SLOVENSKI
STANDARD
ETSIEN300940V5.16.1(2000-10)EuropeanStandard(Telecommunicationsseries)Digitalcellulartelecommunicationssystem(Phase2+);Mobileradiointerface;Layer3specification(GSM04.08version5.16.1Release1996)GLOBALSYSTEMFORMOBILECOMMUNICATIONSRSIST EN 300 940 V5.16.1:2005

ETSI2ETSIEN300940V5.16.1(2000-10)(GSM04.08version5.16.1Release1996)ReferenceREN/TSGN-010408QR12KeywordsDigitalcellulartelecommunicationssystem,GlobalSystemforMobilecommunications(GSM)ETSI650RoutedesLuciolesF-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.©EuropeanTelecommunicationsStandardsInstitute2000.Allrightsreserved.SIST EN 300 940 V5.16.1:2005

ETSIETSIEN300940V5.16.1(2000-10)3(GSM04.08version5.16.1Release1996)ContentsIntellectualPropertyRights.20Foreword.20Introduction.210Scope.220.1ScopeoftheTechnicalSpecification.220.2Applicationtotheinterfacestructures.220.3Structureoflayer3procedures.220.4Testprocedures.220.5Useoflogicalchannels.220.6Overviewofcontrolprocedures.230.6.1Listofprocedures.230.7Applicabilityofimplementations.251References.252Definitionsandabbreviations.292.1Randomvalues.292.2Vocabulary.293RadioResourcemanagementprocedures.303.1Overview/General.303.1.1General.303.1.2Servicesprovidedtoupperlayers.303.1.2.1Idlemode.303.1.2.2Dedicatedmode.303.1.2.3Groupreceivemode.313.1.2.4Grouptransmitmode.313.1.3Servicesrequiredfromdatalinkandphysicallayers.313.1.4Changeofdedicatedchannels.313.1.4.1ChangeofdedicatedchannelsusingSAPI=0.313.1.4.2ChangeofdedicatedchannelsusingotherSAPIsthan0.323.1.4.3Sequencedmessagetransferoperation.323.1.4.3.1Variablesandsequencenumbers.323.1.4.3.2Proceduresfortheinitiation,transferexecutionandterminationofthesequencedmessagetransferoperation.323.1.5ProcedureforServiceRequestandContentionResolution.333.2Idlemodeprocedures.333.2.1MobileStationside.333.2.2Networkside.343.2.2.1Systeminformationbroadcasting.343.2.2.2Paging.353.3RRconnectionestablishment.353.3.1RRconnectionestablishmentinitiatedbythemobilestation.353.3.1.1Enteringthededicatedmode:immediateassignmentprocedure.353.3.1.1.1Permissiontoaccessthenetwork.353.3.1.1.2Initiationoftheimmediateassignmentprocedure.353.3.1.1.3Answerfromthenetwork.363.3.1.1.4Assignmentcompletion.383.3.1.1.5Abnormalcases.383.3.1.2Enteringthegrouptransmitmode:uplinkaccessprocedure.393.3.1.2.1Mobilestationside.393.3.1.2.2Networkside.403.3.1.2.3Abnormalcases.403.3.2Pagingprocedure.403.3.2.1Paginginitiationbythenetwork.403.3.2.2Pagingresponse.41SIST EN 300 940 V5.16.1:2005

ETSI4ETSIEN300940V5.16.1(2000-10)(GSM04.08version5.16.1Release1996)3.3.2.3Abnormalcases.413.3.3Notificationprocedure.423.3.3.1Notificationofacall.423.3.3.2JoiningaVGCSorVBScall.423.3.3.3ReducedNCHmonitoringmechanism.433.3.3.4Notificationresponseprocedure.443.4Proceduresindedicatedmodeandingrouptransmitmode.443.4.1SACCHprocedures.443.4.1.1General.443.4.1.2Measurementreport.453.4.1.3Extendedmeasurementreport$(MAFA)$.453.4.2Transferofmessagesandlinklayerserviceprovision.453.4.3Channelassignmentprocedure.463.4.3.1Channelassignmentinitiation.463.4.3.2Assignmentcompletion.473.4.3.3Abnormalcases.473.4.4Handoverprocedure.483.4.4.1Handoverinitiation.493.4.4.2Physicalchannelestablishment.503.4.4.2.1Finelysynchronizedcellcase.503.4.4.2.2Nonsynchronizedcellcase.503.4.4.2.3Pseudo-synchronizedcellcase.513.4.4.2.4Pre-synchronizedcellcase.513.4.4.3Handovercompletion.513.4.4.4Abnormalcases.523.4.5Frequencyredefinitionprocedure.533.4.5.1Abnormalcases.533.4.6Channelmodemodifyprocedure.533.4.6.1Normalchannelmodemodifyprocedure.533.4.6.1.1Initiationofthechannelmodemodifyprocedure.533.4.6.1.2Completionofchannelmodemodifyprocedure.543.4.6.1.3Abnormalcases.543.4.6.2Channelmodemodifyprocedureforavoicegroupcalltalker.543.4.6.2.1Initiationofthechannelmodemodifyprocedure.543.4.6.2.2Completionofmodechangeprocedure.543.4.6.2.3Abnormalcases.543.4.7Cipheringmodesettingprocedure.543.4.7.1Cipheringmodesettinginitiation.553.4.7.2Cipheringmodesettingcompletion.553.4.8Additionalchannelassignmentprocedure.553.4.8.1Additionalassignmentprocedureinitiation.563.4.8.2Additionalassignmentprocedurecompletion.563.4.8.3Abnormalcases.563.4.9Partialchannelreleaseprocedure.563.4.9.1Partialreleaseprocedureinitiation.563.4.9.2Abnormalcases.563.4.10Classmarkchangeprocedure.573.4.11Classmarkinterrogationprocedure.573.4.11.1Classmarkinterrogationinitiation.573.4.11.2Classmarkinterrogationcompletion.573.4.12Indicationofnotificationsandpaginginformations.573.4.13RRconnectionreleaseprocedure.573.4.13.1Normalreleaseprocedure.573.4.13.1.1Channelreleaseprocedureinitiationindedicatedmodeandingrouptransmitmode.583.4.13.1.2Abnormalcases.583.4.13.2Radiolinkfailureindedicatedmode.583.4.13.2.1Mobileside.593.4.13.2.2Networkside.593.4.13.3RRconnectionabortionindedicatedmode.593.4.13.4Uplinkreleaseprocedureingrouptransmitmode.593.4.13.5Radiolinkfailureingrouptransmitmode.593.4.13.5.1Mobileside.60SIST EN 300 940 V5.16.1:2005

ETSIETSIEN300940V5.16.1(2000-10)5(GSM04.08version5.16.1Release1996)3.4.13.5.2Networkside.603.4.14ReceivingaRRSTATUSmessagebyaRRentity.603.4.15Groupreceivemodeprocedures.603.4.15.1Mobilestationside.603.4.15.1.1ReceptionoftheVGCSorVBSchannel.603.4.15.1.2Monitoringofdownlinkmessagesandrelatedprocedures.603.4.15.1.3Uplinkreplyprocedure.623.4.15.1.4Leavingthegroupreceivemode.623.4.15.2Networkside.633.4.15.2.1ProvisionofmessagesontheVGCSorVBSchanneldownlink.633.4.15.2.2ReleaseoftheVGCSorVBSChannels.633.4.15.3Failurecases.643.4.16Configurationchangeprocedure.643.4.16.1Configurationchangeinitiation.643.4.16.2Configurationchangecompletion.643.4.16.3Abnormalcases.643.4.17Mappingofuserdatasubstreamsontotimeslotsinamultislotconfiguration.643.4.18Handlingofclassmarkinformationatbandchange.654ElementaryproceduresforMobilityManagement.654.1General.654.1.1TypeofMMprocedures.654.1.2MMsublayerstates.664.1.2.1MMsublayerstatesinthemobilestation.664.1.2.1.1Mainstates.664.1.2.1.2SubstatesoftheMMIDLEstate.704.1.2.2TheupdateStatus.714.1.2.3MMsublayerstatesonthenetworkside.724.2BehaviourinMMIDLEState.734.2.1PrimaryServiceStateselection.744.2.1.1SelectionoftheServiceStateafterPowerOn.744.2.1.2OtherCases.744.2.2DetailedDescriptionoftheMSbehaviourinMMIDLEState.744.2.2.1ServiceState,NORMALSERVICE.754.2.2.2ServiceState,ATTEMPTINGTOUPDATE.754.2.2.3ServiceState,LIMITEDSERVICE.764.2.2.4ServiceState,NOIMSI.764.2.2.5ServiceState,SEARCHFORPLMN,NORMALSERVICE.764.2.2.6ServiceState,SEARCHFORPLMN.774.2.2.7ServiceState,RECEIVINGGROUPCALL(NORMALSERVICE).774.2.2.8ServiceState,RECEIVINGGROUPCALL(LIMITEDSERVICE).774.2.3ServicestatewhenbacktostateMMIDLEfromanotherstate.784.3MMcommonprocedures.784.3.1TMSIreallocationprocedure.784.3.1.1TMSIreallocationinitiationbythenetwork.794.3.1.2TMSIreallocationcompletionbythemobilestation.794.3.1.3TMSIreallocationcompletioninthenetwork.794.3.1.4Abnormalcases.794.3.2Authenticationprocedure.804.3.2.1Authenticationrequestbythenetwork.804.3.2.2Authenticationresponsebythemobilestation.804.3.2.3Authenticationprocessinginthenetwork.804.3.2.4Cipheringkeysequencenumber.814.3.2.5Unsuccessfulauthentication.814.3.2.6Abnormalcases.814.3.3Identificationprocedure.824.3.3.1Identityrequestbythenetwork.824.3.3.2Identificationresponsebythemobilestation.824.3.3.3Abnormalcases.824.3.4IMSIdetachprocedure.834.3.4.1IMSIdetachinitiationbythemobilestation.834.3.4.2IMSIdetachprocedureinthenetwork.83SIST EN 300 940 V5.16.1:2005

ETSI6ETSIEN300940V5.16.1(2000-10)(GSM04.08version5.16.1Release1996)4.3.4.3IMSIdetachcompletionbythemobilestation.834.3.4.4Abnormalcases.834.3.5Abortprocedure.834.3.5.1Abortprocedureinitiationbythenetwork.844.3.5.2Abortprocedureinthemobilestation.844.3.6MMinformationprocedure.844.3.6.1MMinformationprocedureinitiationbythenetwork.844.3.6.2MMinformationprocedureinthemobilestation.844.4MMspecificprocedures.844.4.1Locationupdatingprocedure.854.4.2Periodicupdating.854.4.3IMSIattachprocedure.864.4.4GenericLocationUpdatingprocedure.864.4.4.1Locationupdatinginitiationbythemobilestation.864.4.4.1aNetworkRequestforAdditionalmobilestationCapabilityInformation.874.4.4.2Identificationrequestfromthenetwork.874.4.4.3Authenticationbythenetwork.874.4.4.4Cipheringmodesettingbythenetwork.874.4.4.5AttemptCounter.874.4.4.6Locationupdatingacceptedbythenetwork.874.4.4.7Locationupdatingnotacceptedbythenetwork.884.4.4.8ReleaseofRRconnectionafterlocationupdating.884.4.4.9Abnormalcasesonthemobilestationside.894.4.4.10Abnormalcasesonthenetworkside.904.5Connectionmanagementsublayerserviceprovision.904.5.1MMconnectionestablishment.914.5.1.1MMconnectionestablishmentinitiatedbythemobilestation.914.5.1.2Abnormalcases.934.5.1.3MMconnectionestablishmentinitiatedbythenetwork.944.5.1.3.1MobileTerminatingCMActivity.944.5.1.3.2MobileOriginatingCMActivity$(CCBS)$.954.5.1.4Abnormalcases.954.5.1.5MMconnectionestablishmentforemergencycalls.954.5.1.6Callre-establishment.964.5.1.6.1Callre-establishment,initiationbythemobilestation.964.5.1.6.2Abnormalcases.974.5.1.7ForcedreleaseduringMOMMconnectionestablishment.984.5.2MMconnectioninformationtransferphase.994.5.2.1SendingCMmessages.994.5.2.2ReceivingCMmessages.994.5.2.3Abnormalcases.994.5.3MMconnectionrelease.994.5.3.1ReleaseofassociatedRRconnection.994.5.3.2Uplinkreleaseinavoicegroupcall.1004.6ReceivingaMMSTATUSmessagebyaMMentity.1005Elementaryproceduresforcircuit-switchedCallControl.1005.1Overview.1005.1.1General.1005.1.2CallControlStates.1065.1.2.1Callstatesatthemobilestationsideoftheinterface.1065.1.2.1.1Null(StateU0).1065.1.2.1.2MMConnectionpending(U0.1).1065.1.2.1.2aCCpromptpresent(U0.2)$(CCBS)$.1065.1.2.1.2bWaitfornetworkinformation(U0.3)$(CCBS)$.1065.1.2.1.2cCC-Establishmentpresent(U0.4)$(CCBS)$.1065.1.2.1.2dCC-Establishmentconfirmed(U0.5)$(CCBS)$.1065.1.2.1.2eRecallpresent(U0.6)$(CCBS)$.1065.1.2.1.3Callinitiated(U1).1065.1.2.1.4Mobileoriginatingcallproceeding(U3).1065.1.2.1.5Calldelivered(U4).1075.1.2.1.6Callpresent(U6).107SIST EN 300 940 V5.16.1:2005

ETSIETSIEN300940V5.16.1(2000-10)7(GSM04.08version5.16.1Release1996)5.1.2.1.7Callreceived(U7).1075.1.2.1.8ConnectRequest(U8).1075.1.2.1.9Mobileterminatingcallconfirmed(U9).1075.1.2.1.10Active(U10).1075.1.2.1.11Disconnectrequest(U11).1075.1.2.1.12Disconnectindication(U12).1075.1.2.1.13Releaserequest(U19).1075.1.2.1.14Mobileoriginatingmodify(U26).1075.1.2.1.15Mobileterminatingmodify(U27).1075.1.2.2Networkcallstates.1075.1.2.2.1Null(StateN0).1085.1.2.2.2MMconnectionpending(N0.1).1085.1.2.2.2aCCconnectionpending(N0.2)$(CCBS)$.1085.1.2.2.2bNetworkanswerpending(N0.3)$(CCBS)$.1085.1.2.2.2cCC-Establishmentpresent(N0.4)$(CCBS)$.1085.1.2.2.2dCC-Establishmentconfirmed(N0.5)$(CCBS)$.1085.1.2.2.2eRecallpresent(N0.6)$(CCBS)$.1085.1.2.2.3Callinitiated(N1).1085.1.2.2.4Mobileoriginatingcallproceeding(N3).1085.1.2.2.5Calldelivered(N4).1085.1.2.2.6Callpresent(N6).1085.1.2.2.7Callreceived(N7).1085.1.2.2.8Connectrequest(N8).1095.1.2.2.9Mobileterminatingcallconfirmed(N9).1095.1.2.2.10Active(N10).1095.1.2.2.11{Notused}.1095.1.2.2.12Disconnectindication(N12).1095.1.2.2.13Releaserequest(N19).1095.1.2.2.14Mobileoriginatingmodify(N26).1095.1.2.2.15Mobileterminatingmodify(N27).1095.1.2.2.16ConnectIndication(N28).1095.2Callestablishmentprocedures.1095.2.1Mobileoriginatingcallestablishment.1105.2.1.1Callinitiation.1105.2.1.2Receiptofasetupmessage.1115.2.1.3ReceiptofaCALLPROCEEDINGmessage.1125.2.1.4Notificationofprogressingmobileoriginatedcall.1125.2.1.4.1Notificationofinterworkinginconnectionwithmobileoriginatedcallestablishment.1125.2.1.4.2CallprogressinthePLMN/ISDNenvironment.1135.2.1.5Alerting.1135.2.1.6Callconnected.1135.2.1.7Callrejection.1145.2.1.8Transitnetworkselection.1145.2.1.9Trafficchannelassignmentatmobileoriginatingcallestablishment.1145.2.1.10Callqueuingatmobileoriginatingcallestablishment.1145.2.2Mobileterminatingcallestablishment.1155.2.2.1Callindication.1155.2.2.2Compatibilitychecking.1155.2.2.3Callconfirmation.1155.2.2.3.1ResponsetoSETUP.1155.2.2.3.2ReceiptofCALLCONFIRMEDandALERTINGbythenetwork.1165.2.2.3.3Callfailureprocedures.1165.2.2.3.4Calledmobilestationclearingduringmobileterminatingcallestablishment.1175.2.2.4Notificationofinterworkinginconnectionwithmobileterminatingcallestablishment.1175.2.2.5Callaccept.1175.2.2.6Activeindication.1175.2.2.7Trafficchannelassignmentatmobileterminatingcallestablishment.1185.2.2.8Callqueuingatmobileterminatingcallestablishment.1185.2.2.9Userconnectionattachmentduringamobileterminatingcall.1185.2.3NetworkinitiatedMOcall$(CCBS)$.1185.2.3.1Initiation.
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