ETSI TS 101 679 V1.1.1 (1999-07)

Digital Enhanced Cordless Telecommunications (DECT); Broadband Integrated Services Digital Network (B-ISDN); DECT/B-ISDN interworking

DTS/DECT-030130

Digitalne izboljšane brezvrvične telekomunikacije (DECT) - Širokopasovno omrežje z digitalnimi storitvami (B-ISDN) - Medsebojno delovanje DECT/B-ISDN

General Information

• Status: Published
• Publication Date: 19-Jul-1999
• Technical Committee: DECT 3 - Network aspects
• Current Stage: 12 - Completion
• Due Date: 25-May-1999
• Completion Date: 20-Jul-1999
• Ref Project: PSIST TS 101 679:2000 - Digital Enhanced Cordless Telecommunications (DECT); Broadband Integrated Services Digital Network (B-ISDN); DECT/B-ISDN interworking

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.6'1Digital Enhanced Cordless Telecommunications (DECT); Broadband Integrated Services Digital Network (B-ISDN); DECT/B-ISDN interworking33.080Digitalno omrežje z integriranimi storitvami (ISDN)Integrated Services Digital Network (ISDN)33.070.30'(&7Digital Enhanced Cordless Telecommunications (DECT)ICS:Ta slovenski standard je istoveten z:TS 101 679 Version 1.1.1PSIST TS 101 679:2000en01-julij-2000PSIST TS 101 679:2000SLOVENSKI
STANDARD
TS 101 679 V1.1.1 (1999-07)Technical SpecificationDigital Enhanced Cordless Telecommunications (DECT);Broadband Integrated Services Digital Network (B-ISDN);DECT/B-ISDN interworkingPSIST TS 101 679:2000

ETSIETSI TS 101 679 V1.1.1 (1999-07)2ReferenceDTS/DECT-030130 (fjo00icr.PDF)KeywordsB-ISDN, DECT, interworking, profile, radioETSIPostal addressF-06921 Sophia Antipolis Cedex - FRANCEOffice address650 Route des Lucioles - Sophia AntipolisValbonne - FRANCETel.: [phone]
Fax: [phone]Siret N° 348 623 562 00017 - NAF 742 CAssociation à but non lucratif enregistrée à laSous-Préfecture de Grasse (06) N° 7803/[e-mail] copies of this ETSI deliverablecan be downloaded fromhttp://www.etsi.orgIf you find errors in the present document, send yourcomment to: [e-mail] NotificationNo part may be reproduced except as authorized by written permission.The copyright and the foregoing restriction extend to reproduction in all media.© European Telecommunications Standards Institute 1999.All rights reserved.PSIST TS 101 679:2000

ETSIETSI TS 101 679 V1.1.1 (1999-07)3ContentsIntellectual Property Rights.6Foreword.6Introduction.61Scope.72References.73Definitions, symbols and abbreviations.103.1Definitions.103.2Symbols.123.3Abbreviations.123.3.1DECT abbreviations.123.3.2ISDN abbreviations.133.3.3ISO 9646 abbreviations.134Inter-working requirements.144.1Reference configurations and interface.144.1.1Reference Model.144.1.2End system reference configuration.144.1.3Interfaces.154.1.3.1B-ISDN interfaces.154.1.3.2Interfaces supported for a DECT end system.154.2Protocol architecture models.154.3Service requirements.164.3.1Bearer service requirements.164.3.2Interworking of bearer services.164.3.2.1Circuit-mode 64 kbit/s Unrestricted, (ITU-T Recommendation I.231.1).174.3.2.2Circuit-mode Speech, (ITU-T Recommendation I.231.2).174.3.2.3Circuit-mode 3,1 kHz Audio, (ITU-T Recommendation I.231.3).174.3.2.4Other Services.174.3.3End-to-end Compatibility of Information Transfer Attributes.174.3.3.1Default Coding.174.3.3.2ISDN Service Coding.184.3.4Teleservice requirements.194.3.5Supplementary service requirements.195Inter-working mappings.195.1Symbols for map columns.195.2DFS C-plane IWU mappings.205.2.1Call Control (CC) IWU procedures.205.2.1.1Call establishment procedures.205.2.1.1.1Outgoing call.205.2.1.1.2Incoming call.235.2.1.1.3Fall-back procedures.245.2.1.2Call information procedures.245.2.1.3Call release procedures.245.2.1.3.1Call release initiated by the DPS.255.2.1.3.2Call release initiated by the B-NT.255.2.2Supplementary services IWU procedures.275.2.3Other IWU procedures.275.2.3.1Segmentation.275.2.3.2Identity mapping procedures.275.2.4Message mappings.275.2.4.1Message Mapping - DECT to B-ISDN.275.2.4.1.1CC-ALERTING - ALERTING.28PSIST TS 101 679:2000

ETSIETSI TS 101 679 V1.1.1 (1999-07)45.2.4.1.2CC-CALL-PROC - CALL PROCEEDING.285.2.4.1.3CC-CONNECT - CONNECT.295.2.4.1.4CC_INFO (F-02) - INFORMATION (U2).295.2.4.1.5CC_INFO - INFORMATION.305.2.4.1.6CC-RELEASE - RELEASE.305.2.4.1.7CC-RELEASE-COM - RELEASE COMPLETE.315.2.4.1.8CC-SETUP - SETUP.325.2.4.2Message Mapping - B-ISDN to DECT.335.2.4.2.1ALERTING - CC-ALERTING.335.2.4.2.2CALL PROCEEDING - CC-CALL-PROC.345.2.4.2.3CONNECT - CC-CONNECT.345.2.4.2.4CONNECT ACKNOWLEDGE - CC-CONNECT-ACK.355.2.4.2.5INFORMATION - CC-INFO.355.2.4.2.6RELEASE - CC-RELEASE.365.2.4.2.7RELEASE COMPLETE - CC-RELEASE-COM.365.2.4.2.8SETUP - CC-SETUP.375.2.4.2.9SETUP ACKNOWLEDGE - CC-SETUP-ACK.385.2.5Information Element mapping.385.2.5.1B-ISDN to DECT and DECT to B-ISDN.385.2.5.1.1Basic Service - AAL parameters.385.2.5.1.2Basic Service - ATM Traffic descriptor.385.2.5.1.3Basic Service - Broadband Bearer Capability.385.2.5.1.3.1DECT to B-ISDN.385.2.5.1.3.2B-ISDN to DECT.385.2.5.1.4Called Party Number - Called Party Number.395.2.5.1.5Called Party Sub-address - Called Party Sub-address.395.2.5.1.6Calling Party Number - Calling Party Number.395.2.5.1.7IWU Attributes - AAL parameters.405.2.5.1.8IWU Attributes - ATM Traffic descriptor.415.2.5.1.9IWU Attributes - Broadband Bearer Capability.425.2.5.1.10IWU Attributes - Broadband Low Layer Information.435.2.5.1.11IWU to IWU - B-ISDN Information Element.445.2.5.1.12Keypad - Called Party Number.445.2.5.1.13Progress Indicator - Progress Indicator.445.2.5.1.14Sending Complete - Broadband Sending Complete.455.2.6Information Element Coding mapping.455.2.6.1Coding standard - Coding standard.455.2.6.2Configuration - User plane connection configuration.455.2.6.3ID for Information Element - Information Element Identifier.455.2.6.4Info Transfer Capability - AAL Subtype.465.2.6.5Info Transfer Rate - CBR Rate.465.2.6.6Info Transfer Rate - Peak Cell Rates.475.2.6.7L2 Protocol ID - User Information Layer 2 Protocol.475.2.6.8L3 protocol ID - User Information Layer 3 Protocol.485.2.6.9Length of contents - Length of contents.485.2.6.10Location - Location.495.2.6.11Message type - Message type.505.2.6.12Numbering Plan Identification - Numbering Plan Identification.515.2.6.13Number Type - Type Of Number.515.2.6.14Odd/even - Odd/Even Indicator.525.2.6.15Portable Identity - Call Reference.525.2.6.16Progress Description - Progress Description.535.2.6.17Protocol Discriminator - Protocol Discriminator.535.2.6.18Protocol Identifier Coding - Protocol Identifier Coding.545.2.6.19Rate multiplier - Multiplier.545.2.6.20Release Reason - Cause.555.2.6.20.1DECT to B-ISDN.555.2.6.20.2B-ISDN to DECT.565.2.6.21Sub-address Type - Type Of Sub-Address.575.2.6.22Transaction Identifier - Call Reference.57PSIST TS 101 679:2000

ETSIETSI TS 101 679 V1.1.1 (1999-07)55.2.6.22.1Transaction Flag - Call reference Flag.575.2.6.22.2Transaction Value - Call Reference.575.2.6.23Transfer Mode - AAL Type.575.2.6.24Transfer Mode - Bearer Class.585.2.6.25Unit Rate - CBR rate.58Annex A (informative):Inter-working state machine.59A.1IWU Call Control State Transition Diagram.59A.2IWU Call Control States.59A.3IWU Call Control Transition Procedures.59Annex B (informative):DECT OVERLAP SENDING in B-ISDN NULL state.61Bibliography.64History.67PSIST TS 101 679:2000

ETSIETSI TS 101 679 V1.1.1 (1999-07)6Intellectual Property RightsIPRs essential or potentially essential to the present document may have been declared to ETSI. The informationpertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be foundin SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respectof ETSI standards", which is available free of charge from the ETSI Secretariat. Latest updates are available on theETSI Web server (http://www.etsi.org/ipr).Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guaranteecan be given as to the existence of other IPRs not referenced in SR 000 314 (or the updates on the ETSI Web server)which are, or may be, or may become, essential to the present document.ForewordThis Technical Specification (TS) has been produced by ETSI Project Digital Enhanced Cordless Telecommunications(DECT).IntroductionThe present document specifies how Broadband Integrated Services Digital Network (B-ISDN) services are providedover the DECT air interface.One of the main objectives is to describe how the B-ISDN services are mapped across the DECT air interface in aformal way, so that inter-operability of different manufacturers' equipment can be achieved.PSIST TS 101 679:2000

ETSIETSI TS 101 679 V1.1.1 (1999-07)71ScopeThe present document specifies how B-ISDN services can be accessed with a DECT terminal and describes theinterworking between B-ISDN and the DECT end system.The present document covers interworking between B-ISDN constant bit rate (Class A) services and the followingDECT services:-circuit mode 64 kbits/s unrestricted (ITU-T Recommendation I.231.1 [30]);-circuit mode Speech (ITU-T Recommendation I.231.2 [31]);-circuit mode 3,1 kHz Audio (ITU-T Recommendation I.231.3 [32]).The DECT end system reference configuration is used where the DECT fixed system and the DECT portable systemtogether form an end system with the behaviour of a B-ISDN Terminal Equipment (B-ISDN-TE).Mobility management is outside the scope of the present document.2ReferencesThe following documents contain provisions which, through reference in this text, constitute provisions of the presentdocument.· References are either specific (identified by date of publication, edition number, version number, etc.) ornon-specific.· For a specific reference, subsequent revisions do not apply.· For a non-specific reference, the latest version applies.· A non-specific reference to an ETS shall also be taken to refer to later versions published as an EN with the samenumber.[1]ECMA TR/44 (1989): "An architectural framework for private networks".[2]EN 300 102-1: "Integrated Services Digital Network (ISDN); User-network interface layer 3;Specifications for basic call control".[3]EN 300 175-5: "Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI);Part 5: Network (NWK) layer".[4]EN 300 242: "Terminal Equipment (TE); Group 3 facsimile equipment".[5]EN 300 443-1: "Broadband Integrated Services Digital Network (B-ISDN); Digital SubscriberSignalling System No. two (DSS2) protocol; B-ISDN user-network interface layer 3 specificationfor basic call/bearer control; Part 1: Protocol specification [ITU-T Recommendation Q.2931(1995), modified]".[6]ETS 300 080: "Integrated Services Digital Network (ISDN); ISDN lower layer protocols fortelematic terminals".[7]ETS 300 081: "Integrated Services Digital Network (ISDN); Teletex end-to-end protocol over theISDN".[8]ETS 300 111: "Integrated Services Digital Network (ISDN); Telephony 3,1 kHz teleservice;Service description".[9]ETS 300 112: "Integrated Services Digital Network (ISDN); Facsimile group 4 class 1 equipmenton the ISDN; End-to-end protocols".PSIST TS 101 679:2000

ETSIETSI TS 101 679 V1.1.1 (1999-07)8[10]ETS 300 120: "Integrated Services Digital Network (ISDN); Service requirements for telefaxgroup 4".[11]ETS 300 262: "Integrated Services Digital Network (ISDN); Syntax-based Videotex teleservice;Service description".[12]ETS 300 263: "Integrated Services Digital Network (ISDN); Telephony 7 kHz teleservice; Servicedescription".[13]ETS 300 264: "Integrated Services Digital Network (ISDN); Videotelephony teleservice; Servicedescription".[14]ETS 300 434-1: "Digital Enhanced Cordless Telecommunications (DECT); Integrated ServicesDigital Network (ISDN); DECT/ISDN interworking for end system configuration; Part 1:Interworking specification".[15]ETR 056: "Digital Enhanced Cordless Telecommunications (DECT); System descriptiondocument".[16]GSM 04.06: "Digital cellular telecommunications system; Mobile Station; Base Station System(MS - BSS) interface Data Link (DL) layer specification".[17]GSM 04.08: "Digital cellular telecommunications system (Phase 2+); Mobile radio interface layer3 specification".[18]ISO 1745 (1975): "Information processing; Basic mode control procedures for datacommunication systems".[19]ISO/IEC 4335 (1993): "Information technology; Telecommunications and information exchangebetween systems; High-level data link control (HDLC) procedures; Elements of procedures".[20]ISO/IEC 7776 (1995): "Information technology; Telecommunications and information exchangebetween systems; High-level data link control procedures; Description of the X.25LAPB-compatible DTE data link procedures".[21]ISO/IEC 8208 (1995): "Information technology; Data communications; X.25 Packet LayerProtocol for Data Terminal Equipment".[22]ISO/IEC 8348 (1996): "Information technology; Open Systems Interconnection; Network ServiceDefinition".[23]ISO/IEC 8473 (1996): "Information technology; Protocol for providing the connectionless-modenetwork service".[24]ISO/IEC 8802-2 (1998): "Information technology; Telecommunications and information exchangebetween systems; Local and metropolitan area networks; Specific requirements; Part 2: Logicallink control".[25]ISO/IEC 8878 (1992): "Information technology; Telecommunications and information exchangebetween systems; Use of X.25 to provide the OSI Connection-mode Network Service".[26]ISO/IEC 9577 (1996): "Information technology; Protocol identification in the network layer".[27]ISO/IEC 9646-1 (1991): "Information Technology - Open System Interconnection - Conformancetesting methodology and framework - Part 1: General concepts".[28]ISO/IEC 9646-3 (1991): "Information Technology - Open System Interconnection - Conformancetesting methodology and framework - Part 3: The Tree and Tabular Combined Notation".[29]ITU-T Recommendation I.230 (1988): "Definition of bearer service categories".[30]ITU-T Recommendation I.231.1 (1988): "Circuit-mode 64 kbit/s unrestricted; 8 kHz structuredbearer service".PSIST TS 101 679:2000

ETSIETSI TS 101 679 V1.1.1 (1999-07)9[31]ITU-T Recommendation I.231.2 (1988): "Circuit-mode 64 kbit/s, 8 kHz structured bearer serviceusable for speech information transfer".[32]ITU-T Recommendation I.231.3 (1988): "Circuit-mode 64 kbit/s, 8 kHz structured bearer serviceusable for 3,1 kHz audio information transfer".[33]ITU-T Recommendation I.241.2 (1988): "Teletex".[34]ITU-T Recommendation I.241.3 (1988): "Telefax 4".[35]ITU-T Recommendation I.241.5 (1988): "Videotex".[36]ITU-T Recommendation I.241.6 (1988): "Telex".[37]ITU-T Recommendation I.413 (1993): "B-ISDN user-network interface".[38]ITU-T Recommendation I.432 (1996): "B-ISDN User-Network Interface; Physical layerspecification".[39]ITU-T Recommendation Q.921 (1997): "ISDN user-network interface; Data link layerspecification".[40]ITU-T Recommendation Q.922 (1992): "ISDN data link layer specification for frame mode bearerservices".[41]ITU-T Recommendation Q.2931 (1995): "Digital Subscriber Signalling System No. 2 (DSS 2);User-Network Interface (UNI) layer 3 specification for basic call/connection control".[42]ITU-T Recommendation T.70 (1993): "Network-independent basic transport service for thetelematic services".[43]ITU-T Recommendation T.71 (1988): "Link access protocol balanced (LAPB) extended for half-duplex physical level facility".[44]ITU-T Recommendation V.42 (1996): "Error-correcting procedures for DCEs usingasynchronous-to-synchronous conversion".[45]ITU-T Recommendation X.25 (1996): "Interface between Data Terminal Equipment (DTE) andData Circuit-terminating Equipment (DCE) for terminals operating in the packet mode andconnected to public data networks by dedicated circuit".[46]ITU-T Recommendation X.75 (1996): "Packet-switched signalling system between publicnetworks providing data transmission services".[47]ITU-T Recommendation X.213 (1995): "Information technology; Open Systems Interconnection;Network service definition".[48]ITU-T Recommendation X.223 (1993): "Use of X.25 to provide the OSI connection-mode networkservice for ITU-T applications".[49]ITU-T Recommendation X.233 (1997): "Information technology; Protocol for providing theconnectionless-mode network service: Protocol specification".[50]ITU-T Recommendation E.164 (1997): "The international public telecommunication numberingplan".[51]ITU-T Recommendation X.121 (1996): "International numbering plan for public data networks".[52]ITU-T Recommendation I.241.1: "Telephony".PSIST TS 101 679:2000

ETSIETSI TS 101 679 V1.1.1 (1999-07)103Definitions, symbols and abbreviations3.1DefinitionsFor the purposes of the present document, the following terms and definitions apply:bearer service: type of telecommunication service that provides a defined capability for the transmission of signalsbetween user-network interfaces.broadcast: simplex point-to-multipoint mode of transmission.C-plane: control plane of the DECT protocol stacks, which contains all of the internal DECT protocol control, but mayalso include some external user information.NOTE 1:The C-plane stack always contains protocol entities up to and including the network layer.call: all of the NetWorK (NWK) layer processes involved in one network layer peer-to-peer association.NOTE 2:Call may sometimes be used to refer to processes of all layers, since lower layer processes are implicitlyrequired.DECT Fixed System (DFS): logical grouping that contains all the functions between the DECT D reference point andthe reference point on the fixed side of the DECT air interface.NOTE 3:The DFS = Fixed radio Termination (FT) + (local network up to the fixed side ISDN reference point(including fixed side IWU)), see System Description Document (SDD).DECT NetWork (DNW): network that uses the DECT air interface to interconnect a local network to one or moreportable applications. The logical boundaries of the DECT network are defined to be at the top of the DECT networklayer.NOTE 4:A DNW is a logical grouping that contains one or more FTs plus their associated portable radiotermination. The boundaries of the DECT network are not physical boundaries.DECT Portable System (DPS): logical grouping that contains all the functions between the DECT D reference pointand the user interface on the portable side of the DECT air interface.NOTE 5:The DPS = PT + (PA (portable application)), see SDD.End System (ES): logical grouping that contains application processes and supports telecommunication services.NOTE 6:From the Open Systems Interconnection (OSI) point of view, end systems are considered as sources andsinks of information.Fixed Part (DECT Fixed Part) (FP): physical grouping that contains all of the elements in the DECT network betweenthe local network and the DECT air interface.NOTE 7:A FP contains the logical elements of at least one FT, plus additional implementation specific elements.Fixed radio Termination (FT): logical group of functions that contains all of the DECT processes and procedures onthe fixed side of the DECT air interface.NOTE 8:A FT only includes elements that are defined in the DECT CI standard. This includes radio transmissionelements together with a selection of layer 2 and layer 3 elements.Global NetWork (GNW): telecommunication network capable of offering a long distance telecommunication service.NOTE 9:The term does not include legal or regulatory aspects, nor does it indicate if the network is a public or aprivate network.incoming call: call received at a portable part.PSIST TS 101 679:2000

ETSIETSI TS 101 679 V1.1.1 (1999-07)11inter-operability: capability of FPs and portable parts, that enable a portable part to obtain access to teleservices inmore than one location area and/or from more than one operator (more than one service provider).InterWorking Unit (IWU): unit that is used to interconnect sub-networks.NOTE 10:The IWU will contain the inter-working functions necessary to support the required sub-network inter-working.ISDN Access Profile (IAP): defined part of the DECT/ISDN inter-working standard that ensures inter-operabilitybetween FPs and portable parts for the access of ISDN services.Local NetWork (LNW): telecommunication network capable of offering local telecommunication services.NOTE 11:The term does not include legal or regulatory aspects, nor does it indicate if the network is a publicnetwork or a private network.MAC Connection (connection): association between one source Medium Access Control (MAC) Multi-Bearer Control(MBC) entity and one destination MAC MBC entity. This provides a set of related MAC services (a set of logicalchannels), and it can involve one or more underlying MAC bearers.outgoing call: call originating from a portable part.paging: process of broadcasting a message from a DECT FP to one or more DECT portable parts.NOTE 12:Different types of paging message are possible. For example, the {LCE_REQUEST-PAGE} messageorders the recipient to respond with a call set-up attempt.Portable Application (PA): logical grouping that contains all the elements that lie beyond the DECT network boundaryon the portable side.NOTE 13:The functions contained in the portable application may be physically distributed, but any suchdistribution is invisible to the DECT network.Portable Part (DECT Portable Part) (PP): physical grouping that contains all elements between the user and theDECT air interface. Portable part is a generic term that may describe one or several physical pieces.NOTE 14:A PP is logically divided into one portable termination plus one or more portable applications.Portable radio Termination (PT): logical group of functions that contains all of the DECT processes and procedureson the portable side of the DECT air interface.NOTE 15:A PT only includes elements that are defined in the DECT CI standard. This includes radio transmissionelements (layer 1) together with a selection of layer 2 and layer 3 elements.Public Access Profile (PAP): defined part of the DECT common interface standard (DECT CI) that ensures inter-operability between FPs and portable parts for public access services.Radio Fixed Part (RFP): one physical sub-group of a FP that contains all the Radio End Points (REP) (one or more)that are connected to a single system of antennas.segment: one of the pieces of data that is produced by the process of segmentation.NOTE 16:In general, one segment only represents a portion of a complete message.segmentation: process of partitioning one service data unit from a higher layer into more than one protocol data unit.The reverse process is assembly.supplementary service: service that modifies or supplements a basic telecommunication service.teleservice: type of telecommunication service that provides the complete capability, including terminal equipmentfunctions, for communication between users, according to protocols that are established by agreement.PSIST TS 101 679:2000

ETSIETSI TS 101 679 V1.1.1 (1999-07)12U-Plane: user plane of the DECT protocol stacks. This plane contains most of the end-to-end (external) userinformation and user control.NOTE 17:The U-plane protocols do not include any internal DECT protocol control, and it may be null at thenetwork layer and at the Data Link Control (DLC) layers for some services.3.2SymbolsFor the purposes of the present document the following symbols apply:< >timer<< >>information element{ }message3.3Abbreviations3.3.1DECT abbreviationsFor the purposes of the present document, the following DECT abbreviations apply:CCCall ControlCICommon InterfaceCISSCall Independent Supplementary ServicesCLMSConnectionLess Message ServiceCLSSConnectionLess Supplementary ServiceCOMSConnection Oriented Message ServiceDDECT reference point for end systemDECTDigital European Cordless TelecommunicationsDFSDECT Fixed SystemDLCData Link Control, Layer 2b of the DECT protocol stackDPSDECT Portable SystemFPFixed Part, (see definitions)FTFixed radio Termination, (see definitions)IAPISDN Access ProfileIWUInterWorking Unit, (see definitions)LCELink Control EntityMACMedium Access Control, Layer 2a of the DECT protocol stackMMMobility Management, a NWK layer functional groupingNWKNetWorK, Layer 3 of the DECT protocol stackPAPPublic Access ProfilePPPortable PartPTPortable radio Termination, (see definition)REPRadio End Point, (see definitions)RFPRadio Fixed Part, (see definitions)SDDSystem Description DocumentTITransaction IdentifierPSIST TS 101 679:2000

ETSIETSI TS 101 679 V1.1.1 (1999-07)133.3.2ISDN abbreviationsFor the purposes of the present document, the following ISDN abbreviations apply:3PTYThree partyADPCMAdaptive Differential Pulse Code ModulationAOCAdvice Of ChargeAOC-DAdvice Of Charge: charging information during the callAOC-EAdvice Of Charge: charging information at the end of the callAOC-SAdvice Of Charge: charging information at call set-up timeBCBearer CapabilityB-NTNetwork Termination for B-ISDNCCBSCompletion of Calls to Busy SubscriberCLIPCalling Line Identification PresentationCLIRCalling Line Identification RestrictionCOLPConnected Line Identification PresentationCOLRConnected Line Identification RestrictionCONFConference call, add-onCUGClosed User GroupCWCall WaitingDDIDirect Dialling InECTExplicit Call TransferFPHFreephoneHLCHigh Layer CompatibilityHOLDCall HoldISDNIntegrated Services Digital NetworkISDN-TEISDN Terminal EquipmentLLCLow Layer CompatibilityMCIDMalicious Call IdentificationMSNMultiple Subscriber NumberNTNetwork Termination for ISDNSSSupplementary ServicesSUBSubaddressingTPTerminal PortabilityUUSUser-to-User SignallingUUS1UUS service 1UUS2UUS service 2UUS3UUS service 33.3.3ISO 9646 abbreviationsFor the purposes of the present document, the following ISO/IEC 9646-1 [27] and ISO/IEC 9646-3 [28] abbreviationapplies:OSIOpen Systems InterconnectionPSIST TS 101 679:2000

ETSIETSI TS 101 679 V1.1.1 (1999-07)144Inter-working requirements4.1Reference configurations and interface4.1.1Reference ModelThe DECT end system reference configurations are used where the DECT Fixed System (DFS) and DPS together forman end system with the behaviour of a B-ISDN-TE.Figure 1 shows the end system reference configuration:DFSDPSDECT
End-System Reference Configuation
B-ISDN Reference ConfigurationsB-ISDNB-TN1B-TN2B-TAB-TE2TBSBRDB-ISDNB-TN1B-TN2 + B-TAB-TE2TBRFigure 1: End System reference ConfigurationThe TB reference point is always on the fixed side of the DECT air-interface (reference point D). In referenceconfigurations where the SB and TB reference point don't coincide, SB is always on the fixed side of the DECTair-interface.As stated in subclause 4.1.2, for all B-ISDN user-network interfaces standardized in B-ISDN there shall be acorresponding physical interface. This means that if the scope of specification of B-ISDN inter-working to DECT isrestricted to user-network interfaces, it is possible to assume that the B-ISDN reference point at the DFS alwayscorresponds to a physical interface.NOTE:This also means that the logical DFS is always bounded by two physical interfaces and therefore is alsoone or more physical entities.4.1.2End system reference configurationThe reference configurations describe the functional groupings of DECT and B-ISDN and their relationships viareference points. B-ISDN functional groupings and reference points are described in ITU-TRecommendation I.413 [37]. DECT functional groupings and reference points are described in the DECT SystemDescription Document ETR 056 [15].Figure 2 shows the mapping of the DECT logical reference configuration and B-ISDN reference configuration:FPPAPPGlobal networkLocal networkD1D2D3D4DECT
Logical Reference Configuration
B-ISDNB-TN1B-TN2B-TAB-TE2TBSBRB-ISDN Reference ConfigurationFigure 2: DECT logical reference configuration and B-ISDN reference configurationPSIST TS 101 679:2000

ETSIETSI TS 101 679 V1.1.1 (1999-07)15In general, reference points may or may not correspond to a physical interface. The D2 and D4 are logical referencepoints, and can newer align to physical boundaries. D3 always corresponds to a physical boundary The D1 maycorrespond to a physical boundary. The SB and TB reference points always corresponds to a physical interface,according to ITU-T Recommendation I.413 [37]. However, the SB and TB reference points may coincide on the samephysical interface.4.1.3Interfaces4.1.3.1B-ISDN interfacesThis inter-working specification is based on the B-ISDN user-network interface standard, EN 300 443-1 [5].Furthermore this inter-working specification is based on the B-ISDN specifications for bearer services and the genericand service specific supplementary service specifications, which apply at the SB/TB reference point.4.1.3.2Interfaces supported for a DECT end systemThe B-ISDN interfaces that are assumed to be supported by the DFS at the SB and TB reference points of the referenceconfiguration, are defined in ITU-T Recommendation I.432 [38] (155 520 kbit/s and 622 080 kbit/s).4.2Protocol architecture modelsProtocol architecture models are used to describe the protocol interactions at control plane (C-plane) and user-plane(U-plane) of the DFS and DPS. The concept of the protocol architecture model is based on ETR 056 [15] and thereforeECMA TR/44 [1]. The protocol architecture model also shows the location of the IWU.NOTE 1:The IWU will contain the inter-working functions necessary to support the required sub-networkinter-working.NOTE 2:The IWUs, in the context of DECT, interconnect the FT at the fixed side to the attached sub-network.The protocol architecture model for the end system configuration is based on full termination of the whole B-ISDN layerprotocol in the DFS. The IWU in the DFS provides the mapping of the B-ISDN layer 3.IWUTB /D1
or SBD3D2D4PACall Control Protocol StackMACNWLDLCMACNWLDLCPHLPHLATMQ.2100Q.2931PHYATMQ.2100Q.2931PHYFigure 3: Call Control Protocol StackPSIST TS 101 679:2000

ETSIETSI TS 101 679 V1.1.1 (1999-07)16ATMAAL1PHYIWUTB /D1
or SBD3D2D4PAPCMATMAAL1PHYPCMMACDLC LU1MACDLC LU1PHLPHLADPCMADPCMFigure 4: User Plane Protocol Stack: Basic Speech Example4.3Service requirements4.3.1Bearer service requirementsThe present document covers interworking between B-ISDN constant bit rate (class A) services and the followingDECT services:-circuit mode 64 kbits/s unrestricted (ITU-T Recommendation I.231.1 [30]);-circuit mode Speech (ITU-T Recommendation I.231.2 [31]);-circuit mode 3,1 kHz Audio (ITU-T Recommendation I.231.3 [32]).4.3.2Interworking of bearer servicesBearer services, in DECT and B-ISDN respectively, are identified by the information transfer attributes according toITU Recommendation I.230 [29]:1) information transfer mode;2) information transfer rate;3) information transfer capability;4) structure;5) establishment of communication;6) symmetry;7) communication configuration;and interworking is specified on the basis of these information transfer attributes. The interworking covers the followingClass A ISDN services.PSIST TS 101 679:2000

ETSIETSI TS 101 679 V1.1.1 (1999-07)174.3.2.1Circuit-mode 64 kbit/s Unrestricted, (ITU-T Recommendation I.231.1)Information Transfer Attributes and values of attributes of the circuit-mode 64 kbit/s unrestricted, 8 kHz structuredbearer service category.Table 11Information transfer mode:circuit (B-ISDN Class A)2Information transfer rate:64 kbit/s3Information transfer capability:unrestricted4Structure:8 kHz integrity5Establishment of communication:demand6Symmetry:bi-directional symmetric7Communication configuration:point-to-point4.3.2.2Circuit-mode Speech, (ITU-T Recommendation I.231.2)Information Transfer Attributes and values of attributes of the circuit-mode 64 kbit/s 8 kHz structured bearer servicecategory usable for speech information transfer.Table 21Information transfer mode:circuit (B-ISDN Class A)2Information transfer rate:64 kbit/s3Information transfer capability:speech4Structure:8 kHz integrity5Establishment of communication:demand6Symmetry:bi-directional symmetric7Communication configuration:point-to-point4.3.2.3Circuit-mode 3,1 kHz Audio, (ITU-T Recommendation I.231.3)Information Transfer Attributes and values of attributes of the circuit-mode 64 kbit/s, 8 kHz structured bearer servicecategory usable for 3,1 kHz audio information transfer.Table 31Information transfer mode:circuit (B-ISDN Class A)2Information transfer rate:64 kbit/s3Information transfer capability:3,1 kHz audio4Structure:8 kHz integrity5Establishment of communication:demand6Symmetry:bi-directional symmetric7Communication configuration:point-to-point4.3.2.4Other ServicesFor further study.4.3.3End-to-end Compatibility of Information Transfer Attributes4.3.3.1Default CodingDECT to B-ISDN: If the <> information element in the DECT set-up contains "default set-upattributes", the BCOB-A in < ...