SIST ETS 300 756:2001

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Digital Enhanced Cordless Telecommunications (DECT); Global System for Mobile communications (GSM); DECT/GSM Interworking Profile (IWP); Implementation of bearer services33.070.50Globalni sistem za mobilno telekomunikacijo (GSM)Global System for Mobile Communication (GSM)33.070.30'(&7Digital Enhanced Cordless Telecommunications (DECT)ICS:Ta slovenski standard je istoveten z:ETS 300 756 Edition 13SIST ETS 300 756:2001en01-IHEUXDU-20013SIST ETS 300 756:2001SLOVENSKI
STANDARD
EUROPEANETS 300 756TELECOMMUNICATIONMarch 1997STANDARDSource: ETSI EP DECTReference: DE/DECT-010071ICS:33.020Key words:Bearer, DECT, GSM, profileDigital Enhanced Cordless Telecommunications (DECT);Global System for Mobile communications (GSM);DECT/GSM Interworking Profile (IWP);Implementation of bearer servicesETSIEuropean Telecommunications Standards InstituteETSI SecretariatPostal address: F-06921 Sophia Antipolis CEDEX - FRANCEOffice address: 650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCEX.400: c=fr, a=atlas, p=etsi, s=secretariat - Internet: secretariat@etsi.frTel.: +33 4 92 94 42 00 - Fax: +33 4 93 65 47 16Copyright Notification: No part may be reproduced except as authorized by written permission. The copyright and theforegoing restriction extend to reproduction in all media.© European Telecommunications Standards Institute 1997. All rights reserved.SIST ETS 300 756:2001

Page 2ETS 300 756: March 1997Whilst every care has been taken in the preparation and publication of this document, errors in content,typographical or otherwise, may occur. If you have comments concerning its accuracy, please write to"ETSI Editing and Committee Support Dept." at the address shown on the title page.SIST ETS 300 756:2001

Page 3ETS 300 756: March 1997ContentsForeword.5Introduction.51Scope.72Normative references.73Definitions, abbreviations and symbols.103.1DECT definitions.103.2Abbreviations.133.3GSM abbreviations and definitions.143.4Symbols for status columns.144General.145Interworking requirements.155.1General.155.2Reference configurations.165.3General interworking model for FP GSM PLMN attachment.165.4Service requirements.175.5Interworking context.185.5.1General.185.5.2Basic interworking rules.185.5.3Interpretation of broadcast attributes.195.5.4Interpretation of terminal capability.196Interworking mappings, FP attached to the GSM PLMN.206.1FP C-plane IWU procedures.206.1.1CC IWU procedures.206.1.1.1General.206.1.1.2Outgoing data call (PP to FP).206.1.1.3Service negotiation in the case of outgoing call.206.1.1.4Incoming data call (FP to PP).226.1.1.4.1Service negotiation in the case ofincoming data call.236.1.1.5External Handover.246.1.1.6Other CC procedures.246.1.2MM IWU procedures.246.1.3Other IWU procedures.246.1.4Message mappings.246.1.4.1DECT to GSM.246.1.4.1.1CC-SETUP - SETUP.246.1.4.1.2CC-CONNECT - CALL CONFIRMED.256.1.4.1.3CC-ALERTING - CALL CONFIRMED.256.1.4.2GSM to DECT.256.1.4.2.1SETUP - CC-SETUP.256.1.4.2.2CALLPROCEEDING-CC-CALL-PROCEEDING.266.1.5Information element mappings.266.1.5.1DECT to GSM.266.1.5.1.1Iwu-attributes - bearer capability.266.1.5.1.2iwu-to-iwu - Lower layer compatibility.276.1.5.1.3Iwu-to-iwu - Higher layer compatibility.286.1.5.2GSM to DECT.286.1.5.2.1Bearer capability - Iwu-attributes.28SIST ETS 300 756:2001

Page 4ETS 300 756: March 19976.1.5.2.2Lower layer compatibility - Iwu-to-iwu.286.1.5.2.3Higher layer compatibility- iwu-to-iwu.286.1.6Fields in information element coding.286.1.6.1DECT to GSM and GSM to DECT.286.1.6.1.1General coding principle for fieldvalues.286.1.6.1.2Coding standard - Coding standard.286.2FP U-plane IWU procedures.296.2.1General.296.2.2Non-transparent service (NT).296.2.2.1General.296.2.2.2RLP and LAPU link establishment and synchronization.296.2.2.3Asynchronous services interworking.306.2.2.3.1Requirements.306.2.2.3.2Data mapping.306.2.2.4Synchronous services interworking.306.2.2.4.1Requirements.306.2.2.4.2Data mapping.316.2.2.5External handover procedures.316.2.3Interchange circuit signalling mapping.316.2.4Flow control.326.3PP C-plane IWU procedures.326.3.1General.326.3.2Service negotiation in the case of outgoing call.326.3.3Service negotiation in the case of incoming call.336.4PP U-plane IWU procedures.336.4.1General.336.4.2External handover procedures.337Interworking connection types.337.1Connection type definitions.337.1.1General.337.1.2GSM elements.337.1.2.1 field.337.1.3DECT elements.347.1.3.1<> coding.347.1.3.2<> coding for GSM bearer services.347.1.4<> coding.347.1.5<> coding.357.1.7<>.35Annex A (normative):Profile specific network layer features.36A.1General.36A.2<> information element.36Annex B (informative):GSM transparent bearer services.41Annex C (informative):Bibliography.42History.43SIST ETS 300 756:2001

Page 5ETS 300 756: March 1997ForewordThis European Telecommunication Standard (ETS) has been produced by the Digital Enhanced CordlessTelecommunications (DECT) Project in co-operation with the Global System for Mobile Communication(GSM) Technical Committee of the European Telecommunications Standards Institute (ETSI).IntroductionThis ETS is a part of a set of standards for the DECT/GSM Interworking Profile (IWP) concept thatincludes:-general description of service requirements, functional capabilities and information flows,(ETS 300 466 [13]);-access and mapping (protocol/procedure description for 3,1 kHz speech service),(ETS 300 370 [10]);-GSM-MSC/DECT-FP fixed interconnection (ETS 300 499 [14]);-GSM Phase 2 supplementary services implementation (ETS 300 703 [25]);-implementation of bearer services (this ETS);-short message services, point-to-point and cell broadcast (ETS 300 764 [26]);-implementation of facsimile group 3 (ETS 300 792 [27]).This ETS is based on Digital Enhanced Cordless Telecommunications (DECT) common interfacespecification ETS 300 175 [1] - [8] to enable DECT terminals to interwork in the public and privateenvironment with DECT systems which are connected to a Global System for Mobile communications(GSM) core infrastructure.In addition, this ETS is based on the DECT Generic Access Profile (GAP), ETS 300 444 [12], to enablethe same DECT/GSM terminal to interwork with a DECT Fixed Part (FP) complying to the GAPrequirements, irrespective of whether this FP provides residential, business or public access services.General attachment requirements and speech attachment requirements are based on TBR 6 [29] andTBR 10 [28].Further details on the DECT system may be found in ETR 015 [31], ETR 043 [32], ETR 056 [33] andI-ETS 300 176 [9].Transposition datesDate of adoption:21 February 1997Date of latest announcement of this ETS (doa):30 June 1997Date of latest publication of new National Standardor endorsement of this ETS (dop/e):31 December 1997Date of withdrawal of any conflicting National Standard (dow):31 December 1997SIST ETS 300 756:2001

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Page 7ETS 300 756: March 19971ScopeThis European Telecommunication Standard (ETS) is a part of the Digital Enhanced CordlessTelecommunications/Global System for Mobile communications (DECT/GSM) Interworking Profile (IWP)and specifies the Portable Part (PP) interworking requirements and Fixed Part (FP) interworkingrequirements/mappings necessary to ensure that the GSM bearer services can be provided over DECT,as specified in ETS 300 466 [13]. To enable DECT terminals to interwork with DECT systems which areconnected to the GSM infrastructure, from the DECT side this ETS is based on the DECT/GSMinterworking profile, access and mappings ETS 300 370 [10], as well as the DECT data services profile,generic data link service, service type C, Class 2, ETS 300 651 [24].NOTE:For information, the DECT data service profile is based upon the GAPETS 300 444 [12] and on the DECT common interface specificationETS 300 175 [1] - [8].Interworking functions/mappings are specified for Mobile Switching Centre (MSC) attachment for theDECT FP as the FP is using the A-interface towards the GSM MSC in the respect that the FP emulates aGSM Base Station Controller (BSC) with regards to the GSM messages which are relevant to this ETS.The complete interface used between the DECT FP and the GSM Mobile Switching Centre (MSC) isspecified in ETS 300 499 [14]. Attachment via other interfaces to GSM-networks is outside the scope ofthis ETS.The DECT access protocols and FP and PP interworking/mappings necessary for the support of basicvoice telephony service are specified in ETS 300 370 [10].2Normative referencesThis ETS incorporates, by dated or undated reference, provisions from other publications. Thesenormative references are cited at the appropriate places in the text and the publications are listedhereafter. For dated references, subsequent amendments to or revisions of any of these publicationsapply to this ETS only when incorporated in it by amendment or revision. For undated references the latestedition of the publication referred to applies.[1]ETS 300 175-1: "Radio Equipment and Systems (RES); Digital EuropeanCordless Telecommunications (DECT); Common Interface (CI); Part 1:Overview".[2]ETS 300 175-2: "Radio Equipment and Systems (RES); Digital EuropeanCordless Telecommunications (DECT); Common Interface (CI); Part 2: PhysicalLayer".[3]ETS 300 175-3: "Radio Equipment and Systems (RES); Digital EuropeanCordless Telecommunications (DECT); Common Interface (CI); Part 3: MediumAccess Control (MAC) layer".[4]ETS 300 175-4: "Radio Equipment and Systems (RES); Digital EuropeanCordless Telecommunications (DECT); Common Interface (CI); Part 4: DataLink Control (DLC) layer".[5]ETS 300 175-5: "Radio Equipment and Systems (RES); Digital EuropeanCordless Telecommunications (DECT); Common Interface (CI); Part 5: Network(NWK) layer".[6]ETS 300 175-6: "Radio Equipment and Systems (RES); Digital EuropeanCordless Telecommunications (DECT); Common Interface (CI); Part 6:Identities and addressing".[7]ETS 300 175-7: "Radio Equipment and Systems (RES); Digital EuropeanCordless Telecommunications (DECT); Common Interface (CI); Part 7: Securityfeatures".SIST ETS 300 756:2001

Page 8ETS 300 756: March 1997[8]ETS 300 175-8: "Radio Equipment and Systems (RES); Digital EuropeanCordless Telecommunications (DECT); Common Interface (CI); Part 8: Speechcoding and transmission".[9]I-ETS 300 176: "Radio Equipment and Systems (RES); Digital EuropeanCordless Telecommunications (DECT); Approval test specification".[10]ETS 300 370: "Radio Equipment and Systems (RES); Digital EnhancedCordless Telecommunications / Global System for Mobile communications(DECT/GSM) inter-working profile; Access and mapping (Protocol/proceduredescription for 3,1 kHz speech service)".[11]ETS 300 435: "Radio Equipment and Systems (RES); Digital EuropeanCordless Telecommunications (DECT); Data Services Profile (DSP); Basestandard including interworking to connectionless networks (service types A andB, Class 1)".[12]ETS 300 444: "Radio Equipment and Systems (RES); Digital EuropeanCordless Telecommunications (DECT); Generic Access Profile (GAP)".[13]ETS 300 466: "Radio Equipment and Systems (RES); Digital EuropeanCordless Telecommunications/Global System for Mobile Communications(DECT/GSM) interworking profile; General description of service requirements;Functional capabilities and information flows".[14]ETS 300 499: "Radio Equipment and Systems (RES); Digital EnhancedCordless Telecommunications / Global System for Mobile Communications(DECT/GSM) interworking profile; Mobile services Switching Centre (MSC) -Fixed Part (FP) interconnection".[15]ETS 300 501: "European digital cellular telecommunications system (Phase 2);Bearer Services (BS) supported by a GSM Public Land Mobile Network (PLMN)(GSM 02.02)".[16]ETS 300 557: "Digital cellular telecommunications system (Phase 2); Mobile radiointerface layer 3 specification (GSM 04.08)".[17]ETS 300 562: "European digital cellular telecommunications system (Phase 2);Rate adaption on the Mobile Station - Base Station System (MS - BSS) Interface(GSM 04.21)".[18]ETS 300 563: "European digital cellular telecommunications system (Phase 2);Radio Link Protocol (RLP) for data and telematic services on the Mobile Station- Base Station System (MS - BSS) interface and the Base Station System -Mobile-services Switching Centre (BSS - MSC) interface (GSM 04.22)".[19]ETS 300 582: "European digital cellular telecommunications system (Phase 2);General on Terminal Adaptation Functions (TAF) for Mobile Stations (MS)(GSM 07.01)".[20]ETS 300 583: "European digital cellular telecommunications system (Phase 2);Terminal Adaptation Functions (TAF) for services using asynchronous bearercapabilities (GSM 07.02)".[21]ETS 300 584: "European digital cellular telecommunications system (Phase 2);Terminal Adaptation Functions (TAF) for services using synchronous bearercapabilities (GSM 07.03)".[22]ETS 300 590: "Digital cellular telecommunications system (Phase 2); Mobile-services Switching Centre - Base Station System (MSC - BSS) interface; Layer3 specification (GSM 08.08)".SIST ETS 300 756:2001

Page 9ETS 300 756: March 1997[23]ETS 300 608: "European digital cellular telecommunications system (Phase 2);Specification of the Subscriber Identity Module - Mobile Equipment (SIM - ME)interface (GSM 11.11)".[24]ETS 300 651: "Radio Equipment and Systems (RES); Digital EnhancedCordless Telecommunications (DECT); Data Services Profile (DSP); Genericdata link service; Service type C, class 2".[25]ETS 300 703: "Radio Equipment and Systems (RES); Digital EnhancedCordless Telecommunications / Global System for Mobile communications(DECT/GSM) Inter-Working Profile (IWP); GSM phase 2 supplementaryservices implementation".[26]ETS 300 764: "Radio Equipment and Systems (RES); Digital EnhancedCordless Telecommunications / Global System for Mobile communications(DECT/GSM) Interworking Profile (IWP); Implementation of short messageservice, point-to-point and cell broadcast".[27]ETS 300 792: "Radio Equipment and Systems (RES); Digital EnhancedCordless Telecommunications / Global System for Mobile communications(DECT/GSM); DECT/GSM interworking profile; Implementation of facsimilegroup 3".[28]TBR 10: "Radio Equipment and Systems (RES); Digital Enhanced CordlessTelecommunications (DECT); General terminal attachment requirements;Telephony applications".[29]TBR 6: "Radio Equipment and Systems (RES); Digital Enhanced CordlessTelecommunications (DECT); General terminal attachment requirements".[30]91/263/EEC: "Council Directive of 29 April 1991 on the approximation of thelaws of the Member States concerning telecommunications terminal equipment,including the mutual recognition of their conformity" (Terminal Directive).[31]ETR 015: "Radio Equipment and Systems; Digital European CordlessTelecommunications (DECT); Reference document".[32]ETR 043: "Radio Equipment and Systems (RES); Digital European CordlessTelecommunications (DECT); Common interface; Services and facilitiesrequirements specification".[33]ETR 056: "Radio Equipment and Systems (RES); Digital European CordlessTelecommunications (DECT); System description document".[34]ETR 100: "European digital cellular telecommunications system (Phase 2);Abbreviations and acronyms (GSM 01.04)".[35]ISO/IEC 9646-6: "Information technology - Open Systems Interconnection -Conformance testing methodology and framework - Part 6: Protocol profile testspecification".SIST ETS 300 756:2001

Page 10ETS 300 756: March 19973Definitions, abbreviations and symbols3.1DECT definitionsFor the purposes of this ETS, the following definitions apply:attach: The process whereby a PP within the coverage area of a FP to which it has access rights, notifiesthis FP that it is operative. The reverse process is detach, which reports the PP as inoperative.NOTE 1:An operative PP is assumed to be ready to receive calls.authentication: The process whereby a DECT subscriber is positively verified to be a legitimate user of aparticular FP.NOTE 2:Authentication is generally performed at call set-up, but may also be done at any othertime (e.g. during a call).bearer service: A type of telecommunication service that provides a defined capability for thetransmission of signals between user-network interfaces.NOTE 3:The DECT user-network interface corresponds to the top of the network layer (layer 3).C-plane: The control plane of the DECT protocol stacks, which contains all of the internal DECT protocolcontrol, but may also include some external user information.NOTE 4:The C-plane stack always contains protocol entities up to and including the networklayer.call: All of the Network (NWK) layer processes involved in one network layer peer-to-peer association.NOTE 5:Call may sometimes be used to refer to processes of all layers, since lower layerprocesses are implicitly required.DECT Network (DNW): A network that uses the DECT air interface to interconnect a local network to oneor more portable applications. The logical boundaries of the DECT network are defined to be at the top ofthe DECT network layer.NOTE 6:A DECT Network (DNW) is a logical grouping that contains one or more fixed radiotermination plus their associated portable radio termination. The boundaries of theDECT network are not physical boundaries.Fixed Part (DECT Fixed Part) (FP): A physical grouping that contains all of the elements in the DECTnetwork between the local network and the DECT air interface.NOTE 7:A DECT FP contains the logical elements of at least one fixed radio termination, plusadditional implementation specific elements.fixed part GSM PLMN attachment (DECT fixed part attached to a GSM MSC): A definition of afunctional environment where a DECT system (FP) is attached to a GSM MSC. The MSC in this caserefers to a functional entity providing the required MM and CC functionality defined in this ETS in order tocommunicate with the FP.Fixed radio Termination (FT): A logical group of functions that contains all of the DECT processes andprocedures on the fixed side of the DECT air interface.NOTE 8:A fixed radio termination only includes elements that are defined in ETS 300 175 [1] to[8]. This includes radio transmission elements together with a selection of layer 2 andlayer 3 elements.Generic Access Profile (GAP): A defined part of ETS 300 175 [1] to [8] that ensures inter-operabilitybetween FPs and PPs for public business and residential access services.SIST ETS 300 756:2001

Page 11ETS 300 756: March 1997geographically unique identity: This term relates to FP identities, Primary Access Rights Identities(PARIs) and Radio Fixed Part Identities (RFPIs). It indicates that two systems with the same PARI, orrespectively two RFPs with the same RFPI, can not be reached or listened to at the same geographicalposition.Global Network (GNW): A telecommunication network capable of offering a long distancetelecommunication service.NOTE 9:The term does not include legal or regulatory aspects, nor does it indicate if thenetwork is a public or a private network.globally unique identity: The identity is unique within DECT (without geographical or other restrictions).handover: The process of switching a call in progress from one physical channel to another physicalchannel. These processes can be internal (see internal handover) or external (see external handover).NOTE 10:There are two physical forms of handover, intra-cell handover and inter-cell handover.Intra-cell handover is always internal. Inter-cell handover can be internal or external.incoming call: A call received at a PP.inter-cell handover: The switching of a call in progress from one cell to another cell.internal handover: Handover processes that are completely internal to one Fixed radio Termination (FT).Internal handover re-connects the call at the lower layers, while maintaining the call at the NWK layer.NOTE 11:The lower layer reconnection can either be at the Data Link Control (DLC) layer(connection handover) or at the MAC layer (bearer handover).inter-operability: The capability of FPs and PPs, that enable a PP to obtain access to teleservices inmore than one location area and/or from more than one operator (more than one service provider).inter-operator roaming: Roaming between FP coverage areas of different operators (different serviceproviders).Interworking Unit (IWU): A unit that is used to interconnect sub-networks.NOTE 12:The IWU will contain the interworking functions necessary to support the requiredsub-network interworking.intra-cell handover: The switching of a call in progress from one physical channel of one cell to anotherphysical channel of the same cell.intra-operator roaming: Roaming between different FP coverage areas of the same operator (sameservice provider).Local Network (LNW): A telecommunication network capable of offering local telecommunicationservices.NOTE 13:The term does not include legal or regulatory aspects, nor does it indicate if thenetwork is a public network or a private network.locally unique identity: The identity is unique within one FP or location area, depending on application.location area: The domain in which a PP may receive (and/or make) calls as a result of a single locationregistration.location registration: The process whereby the position of a DECT portable termination is determined tothe level of one location area, and this position is updated in one or more databases.NOTE 14:These databases are not included within the DECT FT.SIST ETS 300 756:2001

Page 12ETS 300 756: March 1997Medium Access Control (MAC) connection: An association between one source MAC Multi-BearerControl (MBC) entity and one destination MAC MBC entity. This provides a set of related MAC services (aset of logical channels), and it can involve one or more underlying MAC bearers.outgoing call: A call originating from a PP.Portable Application (PA): A logical grouping that contains all the elements that lie beyond the DECTnetwork boundary on the portable side.NOTE 15:The functions contained in the portable application may be physically distributed, butany such distribution is invisible to the DECT network.Portable Part (DECT Portable Part) (PP): A physical grouping that contains all elements between theuser and the DECT air interface. PP is a generic term that may describe one or several physical pieces.NOTE 16:A DECT PP is logically divided into one portable termination plus one or more portableapplications.Portable radio Termination (PT): A logical group of functions that contains all of the DECT processesand procedures on the portable side of the DECT air interface.NOTE 17:A PT only includes elements that are defined in ETS 300 175 [1] to [8]. This includesradio transmission elements (layer 1) together with a selection of layer 2 and layer 3elements.Radio Fixed Part (RFP): One physical sub-group of a FP that contains all the radio end points (one ormore) that are connected to a single system of antennas.registration: An ambiguous term, that should always be qualified. See either location registration orsubscription registration.roaming: The movement of a PP from one FP coverage area to another FP coverage area, where thecapabilities of the FPs enable the PP to make or receive calls in both areas.NOTE 18:Roaming requires the relevant FPs and PP to be inter-operable.service type A: DECT data profile service providing low speed frame relay, with a net sustainablethroughput of up to 24 kbits/s, optimized for bursty data, low power consumption and low complexityapplications such as hand-portable equipment;service type C: DECT data profile service providing Non-transparent connection of data streamsrequiring Link Access Protocol (LAP) services, optimized for high reliability and low additional complexity.This builds upon the services offered by the type A or B profiles.subscription registration: The infrequent process whereby a subscriber obtains access rights to one ormore FPs.NOTE 19:Subscription registration is usually required before a user can make or receive calls.U-plane: The user plane of the DECT protocol stacks. This plane contains most of the end-to-end(external) user information and control.SIST ETS 300 756:2001

Page 13ETS 300 756: March 19973.2AbbreviationsFor the purposes of this ETS, the following abbreviations apply:ARIAccess Rights Identity. See SARI and TARIBCDBinary Coded DecimalBPADBit oriented Packet Assembler/DisassemblerBSCGSM Base Station ControllerCCCall ControlCISSCall Independent Supplementary ServicesCKCipher KeyCLMSConnectionless Message ServiceCOMSConnection Oriented Message ServiceCRSSCall Related Supplementary ServicesC2Data services Profile C, mobility class 2DAMDECT Authentication ModuleDAM DADECT Authentication Module DECT ApplicationDECTDigital Enhanced Cordless TelecommunicationsDLCData Link Control, Layer 2b of the DECT protocol stackDSAADECT Standard Authentication AlgorithmDTMFDual Tone Multi-FrequencyFPFixed PartFTFixed radio TerminationGAPGeneric Access ProfileIMEIInternational Mobile Equipment IdentityIMSIInternational Mobile Subscriber IdentityIPEIInternational Portable Equipment IdentityIPUIInternational Portable User IdentityISDNIntegrated Services Digital NetworkISUPIntegrated Services Digital Network User PartIWUInterworking UnitKauthentication KeyLAPULink Access Procedure (U-Plane)LCELink Control EntityLLMELower Layer Management EntityMACMedium Access Control, Layer 2a of the DECT protocol stackMAPGSM Mobile Application PartMMMobility Management, a NWK layer functional groupingMSBMost Significant BitMSMobile StationMSCMobile Switching CentreNWKNetwork, Layer 3 of the DECT protocol stackOSIOpen Systems InterconnectionPAPortable ApplicationPADPacket Assembler/DisassemblerPARIPrimary Access Rights IdentityPARKPortable Access Rights KeyPCMPulse Coded ModulationPEPortable EquipmentPLMNPublic Land Mobile NetworkPPPortable PartPSTNPublic Switched Telephone NetworkPTPortable radio Termination. See definitionPTNXPrivate Telecommunications Network ExchangePUNPortable User NumberPUTPortable User TypeRANDA Random challenge issued by a FPRESA Response calculated by a PPRFPRadio Fixed PartRFPIRadio Fixed Part IdentityRSA value used to establish authentication session keysSARISecondary Access Rights IdentitySIMSubscriber Identity ModuleSIST ETS 300 756:2001

Page 14ETS 300 756: March 1997SSSupplementary ServicesSRESA GSM specific authentication response calculated by the GSM SIM or the DAMTAFTerminal Adaptation FunctionTARITertiary Access Rights IdentityTMSITemporary Mobile Subscriber IdentityTPUITemporary Portable User IdentityTUPTelephony User PartUPIUser Personal Identification3.3GSM abbreviations and definitionsDefinition and specific GSM abbreviations may be found in ETR 100 [34].3.4Symbols for status columnsThe symbols defined in this subclause are applied for procedures, features, messages, informationelements, fields and field codings in this ETS if not explicitly otherwise stated. The interpretation of statuscolumns in all tables is as follows:-M for mandatory to map/support/use;-O for optional to map/support/use;-I for out-of-scope (not subject for testing);-X for prohibited or excluded to map/support/use (the message, information element may be allowedto be used in the standard/standards but it is not allowed to be mapped/used depending on theenvironment/dynamic conditions etc.);-N/A or -(dash) for not applicable to map/support/use;-C for conditional to map/support/use (the message, information element mapping depends on theselection of other optional or/and conditional items).NOTE:The symbol "-" in the mapping section of this ETS means that there is no message,information element or coding specified in this column.4GeneralThis ETS specifies how non-transparent GSM bearer services are provided over the DECT air interface.One of the main objectives is to describe how the GSM bearer services are mapped across the DECT airinterface in a formal way, so that inter-operability of different manufacturer's equipment can be achieved.This is done by describing the interworking unit procedures and mappings loosely following CCITTRecommendations Q.600-series of ITU-T Recommendations (Q.601 to Q.699) and by describing an airinterface profile following ISO 9646-6 [35]. ISO 9646-6 [35] enables the subsequent generation of testscases, if required.This ETS is made up of 3 main clauses:Clause 5: Interworking requirements - includes reference configurations and the protocol architecturemodels. Also describes the main service requirements. The context of the interworking profile is alsorequired.Clause 6: Interworking Unit (IWU) mappings for bearer services shows the C-plane and U-planemappings for the FP GSM PLMN attachment in respective order. Two IWUs are considered; the FP IWUand the PP IWU, although the FP IWU is expected to be the largest. The signalling mappings aredescribed in terms of IWU procedures with informative data flow diagrams. Detailed descriptions followusing tables of what is mapped, what is ignored, and what is transferred transparently. These clauses alsoinclude other profile specific information.SIST ETS 300 756:2001

Page 15ETS 300 756: March 1997Clause 7: Connection types - this clause identifies the main DECT connection types (U-plane + C-plane)at the air interface supporting optimized groups of services, from the IWU mappings for differentconfigurations/models. Thus this subclause defines how alternate GSM bearer services can be selectedthrough the DECT air interface.5Interworking requirements5.1GeneralThis ETS defines the mandatory requirements for the FP in terms of interworking functions between theair interface and the external network as well as minimum requirements at the DECT air interface. It alsodefines the mandatory requirements for the PP in terms of interworking functions between the air interfaceand the PA as well as the minimum requirements for the PP at the DECT air interface.Unless stated otherwise, the ETS 300 370 [10] requirements are the basis of this ETS.The interworking mappings shall be based on the Phase 2 GSM standards.The basis for interworking shall be the protocols defined in ETS 300 557 [16] and ETS 300 590 [22].The procedures which are used depend on which Access Rights Identifier (ARI) type is chosen by the PP;either according to the minimum requirements of the data services profile C, class 2, annex C.4 [24] or theprocedures as described in this ETS; i.e. the PPs, which are based on this ETS, shall always be capableof interworking with FPs which fulfil the minimum requirements of the data services profile C, class 2,annex C.4 [24]. The FPs, which fulfil the requirements of this ETS, and which support also non-GSM ARIs(classes A, B or C) shall also support the minimum requirements of the data services profile C, class 2,annex C.4 [24].NOTE:The data services profile C, class 2, subclause C.4 "Interworking to connectionoriented bearer services" describes how interworking to public connection orientednetwork services by using the C2 profile can be achieved. The C-plane proceduresrequired by the clause C.4 are based on those of a GAP (ETS 300 444 [12]) telephonewith additional mandatory elements to cover data specific aspects of the call set-up.This ETS defines interworking environments for the FP and the PP in the case when DECT FPs arefunctionally attached to the GSM MSC i.e. broadcast attribute a39 "SIM services available" set to '1'B in allenvironments (public, business and residential). The PP shall be in alignment with the requirements asdefined in this ETS.Figure 1 illustrates the access capabilities of the terminal supported by this ETS.PPFPFPPPSIMPP supporting ARI D+A,B,CARI DGSM MSCPSTN, ISDNPP supportingData profile C2, clause C.4this ETSFP supportingData profile C2, clause C.4FP supporting this ETSFigure 1: The profile access capabilities of terminals supported by this ETSSIST ETS 300 756:2001

Page 16ETS 300 756: March 19975.2Reference configurationsThe reference configuration of ETS 300 370 [10], subclause 5.2 shall apply.5.3General interworking model for FP GSM PLMN attachmentThe general interworking model shown in figure 2 describes the general profile reference configuration ofthe FP and PP containing both control (C) and user (U) planes. The protocol architecture model alsoshows the location of the IWUs and the requirements of the air interface.MSCFPPPCIIWFDataapplication/SIMData profiletype C,class 2andETS 300 370signallingData profiletype C,class 2andETS 300 370signallingGSM bearerservicessignalling/dataGSM bearerservicessignalling/dataFP IWU functions/mappingsdefined in this ETS and in ETS 300 370PP IWU functions defined in data profile type C,mobility class 2, annex C.4 and in ETS 300 370Air I/F functions/requirements defined in this ETSbased on data profile type C, mobility class 2 and ETS 300 370Figure 2: General interworking model for bearer services for FP GSM PLMN attachmentThe C plane part of the IWU (figure 2) in the FP provides the mapping between a subset of the GSMLayer 3 and the corresponding DECT NWK protocols. The U plane part of the IWU in the FP provides themapping between the GSM transmission plane protocol layers and the corresponding DECT data profilelayer protocols.The IWU in the PP provides the mapping between a subset of the DECT NWK protocols and the GSMapplication (SIM). The Terminal Adaptation Function (TAF) is part of the IWU in the PP and it providesmapping between the DECT U-plane and C-plane data related to the end-to-end service and the dataapplication or the data terminal interface. The PP TAF defined in the DECT data services profile, servicetype C, class 2 annex C.4 [24] provides a CCITT Recommendation V.24 and V.25bis connection to thedata application.SIST ETS 300 756:2001

Page 17ETS 300 756: March 19975.4Service requirementsGeneral description of service requirements, functional capabilities and information flows are specified inETS 300 466 [13]. Table 1 defines the GSM bearer services as described in ETS 300 501 [15] supportedby this ETS. Only GSM non-transparent (NT) bearer services are supported due to the used DECT airinterface service. which is based on a non-transparent protocol (LAPU).NOTE:The rates defined in table 1 are the rates that are used by the application and themaximum rate is 9,6 kbit/s although the DECT data profile service type C2 can providein single slot operation up to 24 kbit/s rate on the air interface. This is due to thelimitation of the GSM A interface.Table 1: The GSM bearer services supported by this ETSGSM bearer servicenumberGSM bearer service nameGSM connection type21Asynchronous 300 bit/sNT22Asynchronous 1,2 kbit/sNT23Asynchronous 1200/75 bit/sNT24Asynchronous 2,4 kbit/sNT25Asynchronous 4,8 kbit/sNT26Asynchronous 9,6 kbit/sNT31Synchronous 1,2 kbit/sNT32Synchronous 2,4 kbit/sNT33Synchronous 4,8 kbit/sNT34Synchronous 9,6 kbit/sNT41PAD access 300 bit/sNT42PAD access 1,2 kbit/sNT43PAD access 1200/75 bit/sNT44PAD access 2,4 kbit/sNT45PAD access 4,8 kbit/sNT46PAD access 9,6 kbit/sNTSIST ETS 300 756:2001

Page 18ETS 300 756: March 19975.5Interworking context5.5.1GeneralThe CC entity of PT and FT shall fulfil the minimum requirements of annex C.4 in ETS 300 651 [24] withthe following modifications:- The IWU-ATTRIBUTES element structure defined in annex A of this ETS shall be used.- The peer attribute negotiation as specified in ETS 300 175-5 [5] subclause 15.2.5. and specified asoptional in data services profile C, class 2 shall be supported.NOTE 1: The link suspension and resumption procedures and LAPU SAPI 3 frame structure aresupported as specified in the ETS 300 651 [24] subclause C.4.In addition, the ETS 300 370 [10] Call Control requirements shall be required in both PT and FT.NOTE 2:Thus the CC entity in the FP and PP fulfils the minimum requirements of theETS 300 651 [24], and ETS 300 370 [10]. That is, the Call Control mandatory parts ofthe data services profile C, class 2 and DECT/GSM interworking profile for 3,1 kHzspeech service are mandatory for this ETS.The MM entity in the FT and PT shall fulfil the requirements of the ETS 300 370 [10].NOTE 3:As a result this the PP profile also fulfils the minimum MM requirements of the dataservices profile C, class 2 (ETS 300 651 [24]) and the GAP profile (ETS 300 444 [12]).The minimum U-plane requirements in the FT and PT shall fulfil the data services profile C, class 2(ETS 300 651 [24]) requirements based on the service type A.NOTE 4:The service type A refers to the data service profile A/B, class 1 (ETS 300 435 [11])U-plane requirements, i.e. single slot functionality is the minimum requirement of theDECT lower layers.This ETS does not require the support of the GAP based voice services i.e. the PP may be a data onlyterminal with the GSM access capabilities and a GSM subscription as defined in ETS 300 370 [10].5.5.2Basic interworking rulesThe basic interworking rules defined in subclause 5.4.2 of ETS 300 370 [10] shall apply with followingdefinitions:-a FP belonging to ARI class D shall support this ETS;-the profile as defined in this ETS may be used in association only with FPs with ARI class D;-a PP belonging to ARI class D shall support this ETS in addition to ETS 300 651 [24], clause C.4.Table 2 defines the associated GSM and DECT procedures required in the FP and the PP.SIST ETS 300 756:2001

Page 19ETS 300 756: March 1997Table 2: Implementation/support requirements of DECT and GSM procedures in the FP and the PPGSM procedureDECT procedurePPFPAuthentication procedureAuthentication of PTMMIdentity procedureIdentification of PTMMAttach procedureAttach ( = Location registration)MMDetach procedureDetachMMLocation updating procedureLocation registrationMMTMSI re-allocation procedureTemporary identity assignmentMMCiphering procedureCipher-switching initiated by FTCipher-switching initiated by PTMnote 1Mnote 1MSC associated handoverExternal handoverOnote 4Onote 4CM service procedureOutgoing call requestMMMM status procedure--I-Parameter retrieval (Location update)MMOutgoing call initiationnote 2Outgoing call request and overlapsending procedureMMIncoming call setupIncoming call requestMMAccepted call establishmentnote 3Accepted call establishmentMMAbnormal call clearingAbnormal call release (call reject)MMNormal call clearingNormal call releaseMMPagingPagingMMNOTE 1:Cipher switching initiated by the PT may depend on the implementation of externalhandover procedure.NOTE 2:Outgoing call initiation includes the following ETS 300 557 [16] (GSM 04.08) layer 3procedures:1)CM- service procedure;2)receipt of Setup messag
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