ETSI ETS 300 756 ed.1 (1997-03)

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



SIST ETS 300 756:2001



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



Page 6ETS 300 756: March 1997Blank pageSIST ETS 300 756:2001



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 da
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