SIST ETS 300 326-1:1999

• Abstract:

  General review to take account of the experience gained in the implementation of the system.

• Status: Published
• Publication Date: 31-Oct-1999
• ICS: 33.060.01 - Radiocommunications in general
• ICS: 33.100.01 - Electromagnetic compatibility in general
• ICS: 49.090 - On-board equipment and instruments
• Technical Committee: RES - Radio equipment and systems
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Nov-1999
• Due Date: 01-Nov-1999
• Completion Date: 01-Nov-1999
• Ref Project: ETSI ETS 300 326-1 ed.2 (1998-08) - ElectroMagnetic Compatibility and Radio Spectrum Matters (ERM); Terrestrial Flight Telecommunications System (TFTS); Part 1: Speech services, facilities and requirements

SIST ETS 300 326-1:1999 is the Slovenian adoption of ETS 300 326-1 Edition 2 from ETSI. It specifies the minimum technical requirements for the Terrestrial Flight Telecommunications System (TFTS) so that aircraft can use public telecommunication services through ground stations and the fixed network. This Part 1 covers speech services, facilities and requirements for the aircraft side, the radio and network behavior, and the related data items.

What does SIST ETS 300 326-1:1999 specify?

SIST ETS 300 326-1:1999 sets the technical baseline for TFTS speech services and the functions needed to make them work across aircraft and ground networks. It is written for a pan-European terrestrial aeronautical public correspondence service and is centered on interoperability.

The scope ties the system to the frequency bands designated for TFTS at WARC 92, with ground-to-air operation in 1 670 to 1 675 MHz and air-to-ground operation in 1 800 to 1 805 MHz. It also notes that the document is a general review based on implementation experience.

The document is organized into clauses on:

• scope and normative references
• definitions and abbreviations
• general description of TFTS
• TFTS telecommunication services
• TFTS requirements
• design parameters
• TFTS data requirements

What are the key requirements of SIST ETS 300 326-1:1999?

SIST ETS 300 326-1:1999 focuses on service continuity, safe operation, radio efficiency, call handling, and end-to-end speech quality. In practice, it tells implementers what the aircraft equipment, ground stations, and switching center must support to interwork correctly.

Service coverage, safety, and spectrum use

Clause 6 requires airborne equipment to meet aviation safety standards, and it requires both crew and ground personnel to be able to suspend service. That matters because the system has to be controllable when operational or safety conditions require it.

The system is expected to provide continuous coverage in the territories where it is deployed, using en-route, intermediate, and airport cells. The minimum implementation may use en-route cells only, but the design must still function without intermediate or airport cells.

Clause 6 also requires efficient use of spectrum and protection of other services in adjacent bands. That is important for coexistence with nearby radio users, including radio astronomy in the adjacent band mentioned in the scope.

Bearer services, handover, and call handling

The TFTS shall support both circuit-switched and packet-switched bearer services, and it shall support a 9,6 kbits/s speech bearer service plus a paging bearer service. For a buyer or integrator, this means the platform is aimed at voice and paging first, with packet services handled through related specifications.

Handover must be supported within a cell and between cells, including between GSs connected to different GSCs. The design targets limit interruption during handover and set a high handover success rate, so handoff is not just allowed - it must be engineered for ongoing calls.

The system shall support DTMF transmission after call setup and call progress indications in the stages before fixed-network connection, during connection, and after release or loss. This is what lets users hear meaningful call status rather than a silent or ambiguous line.

Speech performance and network interworking

Clause 6 and Clause 7 set practical speech-performance targets such as maximum connection time, release time, delay budget, and intelligibility. The fixed network interface is based on 64 kbits/s A-law presentation of user information, so implementers need to check how the air system maps into the terrestrial network.

Echo control is specifically addressed at the GSC, and the aircraft side is expected to manage delay sources such as handsets and voice coding. In practice, this is the section that drives audio quality and user experience.

Clause 7 also requires the call success rate, connection timing, interruption time, handover performance, and telephony intelligibility to meet stated targets. These are the figures that matter when testing coverage and service quality.

Identification and data

Clause 8 defines identification data for the aircraft and the ground network, including ASI, AEN, ATEI, AEC, GSIC, and GEN. This is what supports handover, acquisition, maintenance, call records, and network management.

What terms does SIST ETS 300 326-1:1999 define?

• Bearer service - a telecommunication service that provides the capability for signal transmission between user-network interfaces.
• Teleservice - a service that includes terminal functions and supports communication between users under agreed protocols.
• Aircraft Station (AS) - the airborne TFTS entity that includes the aircraft-side functions needed for radio and telecommunication operation.
• Ground Station (GS) - the radio site that provides communication and line transmission for aircraft.
• Ground Switching Centre (GSC) - the TFTS node that provides switching, control, and fixed-network access.
• Ground Station System (GSS) - the combination of GSs and the associated GSC.
• Aircraft Station Identity (ASI) - the aircraft identifier used in TFTS records, based on the ICAO 24-bit technical address.

Who uses SIST ETS 300 326-1:1999?

SIST ETS 300 326-1:1999 is used by aircraft equipment manufacturers, aircraft integrators, ground station designers, network operators, and service providers implementing TFTS. It is also relevant to aviation and telecommunications authorities, test labs, and buyers who need to check that onboard and ground equipment can interwork.

The document is especially useful when specifying aircraft telephony equipment, planning ground coverage, defining call handling behavior, and checking network identification and record keeping.

What changed in SIST ETS 300 326-1:1999 from the previous edition?

SIST ETS 300 326-1:1999 is the second edition, following the first edition from February 1996. The scope says this edition is a general review that takes account of experience gained in implementing the system.

The foreword also states that the ETS is split into three parts: Part 1 for speech services, facilities and requirements, Part 2 for speech services, radio interface, and Part 3 for speech services, network aspects.

Which standards are used with SIST ETS 300 326-1:1999?

• ERC/DEC/(92)01 - designates the TFTS frequency bands used by this part.
• ETS 300 326-2 - gives the TFTS radio interface and the signaling details referenced for handover, DTMF, and call indications.
• ETS 300 326-3 - gives the network aspects used for handover and signaling behavior.
• ETS 300 085 - provides handset attachment requirements for 3,1 kHz telephony terminals.
• ETS 300 752 - covers TFTS packet mode data.
• ES 200 794 - covers circuit-mode voice-band data services and Group 3 fax support.
• CCITT Recommendation G.165 - provides the echo-canceller reference used for GSC echo control.
• CCITT Recommendation E.164 - provides the numbering plan used for network identification.
• ARINC Characteristic 752, ARINC Characteristic 746, ARINC Characteristic 741 - provide aircraft-side subsystem and voice-coding references.
• ITU-T Recommendation V.21 and V.22 bis - define modem types mentioned for future bearer services.

What does the SIST ETS 300 326-1:1999 document contain?

SIST ETS 300 326-1:1999 contains service attribute tables, operational requirements, design targets, and identification schemes rather than a step-by-step installation procedure. It includes tables for speech and paging bearer services, speech teleservice attributes, handover interruption times, handover success rates, and TFTS data items.

The document also includes figures for the ATEI, AEC, and GSIC structures, plus a delay-budget example for speech transmission. These are the parts a designer or tester uses to define records, verify timing, check call control behavior, and confirm interoperability.

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Elektromagnetna združljivost (EMC) in zadeve v zvezi z radijskim spektrom (ERM) - Prizemni letalski telefonski sistem (TFTS) - 1. del: Govorne storitve, zahteve za napraveElectroMagnetic Compatibility and Radio Spectrum Matters (ERM); Terrestrial Flight Telecommunications System (TFTS); Part 1: Speech services, facilities and requirements49.090On-board equipment and instruments33.100.01Elektromagnetna združljivost na splošnoElectromagnetic compatibility in general33.060.01Radijske komunikacije na splošnoRadiocommunications in generalICS:Ta slovenski standard je istoveten z:ETS 300 326-1 Edition 2SIST ETS 300 326-1:1999en01-november-1999SIST ETS 300 326-1:1999SLOVENSKI
STANDARD
EUROPEANETS 300 326-1TELECOMMUNICATIONAugust 1998STANDARDSecond EditionSource: ERMReference: RE/ERM-RP05-005-1ICS:33.020Key words:TFTS, radio, speechElectromagnetic compatibilityand Radio spectrum Matters (ERM);Terrestrial Flight Telecommunications System (TFTS);Part 1: Speech services, facilities and requirementsETSIEuropean Telecommunications Standards InstituteETSI SecretariatPostal address: F-06921 Sophia Antipolis CEDEX - FRANCEOffice address: 650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCEInternet: [e-mail] - http://www.etsi.fr - http://www.etsi.orgTel.: [phone] - Fax: [phone]Copyright 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 1998. All rights reserved.SIST ETS 300 326-1:1999

Page 2ETS 300 326-1: August 1998Whilst 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 Standards Making Support Dept." at the address shown on the title page.SIST ETS 300 326-1:1999

Page 3ETS 300 326-1: August 1998ContentsForeword.5Introduction.51 Scope.72 Normative references.73 Definitions and abbreviations.83.1 Definitions.83.2 Abbreviations.84 General description of the TFTS.94.1 Purpose of the TFTS.94.2 Service coverage.94.3 TFTS architecture.104.3.1 Aircraft Station (AS).114.3.2 Ground Station (GS).124.3.3 Ground Switching Centre (GSC).124.3.4 Radio interface.124.3.5 Fixed network interface.124.3.6 Interfaces with other systems.125 TFTS telecommunication services.125.1 TFTS bearer services.125.1.1 Speech bearer service.125.1.2 Paging135.2 TFTS teleservices.135.3 TFTS supplementary services.135.4 Others TFTS services.145.4.1 TFTS services defined in other specifications.145.4.1.1 Bearer services.145.4.1.2 Teleservices.145.4.2 Future services to be defined in later phases.145.4.2.1 Bearer services.145.4.2.2 Teleservices.146 TFTS requirements.156.1 Safety.156.1.1 Aviation requirements.156.1.2 Suspension of service by crew.156.1.3 Suspension of service from ground.156.1.4 Ground equipment.156.1.5 User safety.156.2 Service coverage.156.2.1 Basic requirements.156.2.2 Implementation of intermediate and airport cells.156.2.3 Radio network and cell planning.156.3 Capacity and frequency utilization.166.3.1 Use of frequency spectrum.166.3.2 Specified frequency spectrum.166.3.3 Capacity aspects.166.4 Mobility Management (MM).166.4.1 Roaming and location registration.166.4.2 GS selection.166.5 Handover.166.5.1 Handover facilities.16SIST ETS 300 326-1:1999

Page 4ETS 300 326-1: August 19986.5.2 Inter GSC handover.166.6 Network interworking.176.6.1 Fixed network interface.176.6.2 Transmission and signalling requirements.176.7 TFTS transmission performance.176.7.1 Fixed network connections.176.7.1.1 Digital connectivity.176.7.1.2 Network devices.176.7.2 Aircraft equipment.176.7.2.1 Aircraft system standards.176.7.2.2 Aircraft terminal echo sources.176.7.2.3 Handsets.176.7.3 TFTS reference models.186.7.4 TFTS delay budget.186.7.4.1 One way delay budget.186.7.4.2 Echo control.196.8 Voice coding.196.9 Call queuing.196.10 Transmission of Dual Tone Multi Frequency (DTMF) tones.196.11 Call progress indications.196.11.1 Purpose and types of indication.196.11.2 Call conditions.196.11.2.1 Case 1 of subclause 6.11.1.206.11.2.2 Case 2 of subclause 6.11.1.206.11.2.3 Case 3 of subclause 6.11.1.206.11.3 ATE interface.206.12 Identification of separate networks and service providers.217 Design parameters.217.1 General.217.2 TFTS design parameters.217.2.1 Call success rate.217.2.2 Time to connect call.217.2.3 Time to release call.217.2.4 Connection time remaining.217.2.5 Duration of interruption due to handover.227.2.6 Handover success rate.227.2.7 Telephony probability of intelligibility.228 TFTS data requirements.228.1 External data systems.228.2 TFTS data records.228.2.1 Identification data.258.2.1.1 Aircraft Station Identity (ASI).258.2.1.2 Aircraft Equipment Number (AEN).258.2.1.3 Aircraft Termination Equipment Identifier (ATEI).258.2.1.4 Aircraft Equipment Code (AEC).258.2.2 Identification data Ground Station System (GSS).258.2.2.1 Ground Station Identity Code (GSIC).258.2.2.2 Ground Equipment Number (GEN).268.2.2.3 Latitude and longitude.26History.27SIST ETS 300 326-1:1999

Page 5ETS 300 326-1: August 1998ForewordThis second edition European Telecommunication Standard (ETS) has been produced by theElectromagnetic compatibility and Radio spectrum Matters (ERM) Technical Committee of the EuropeanTelecommunications Standards Institute (ETSI).This ETS has been split into three parts as follows:Part 1: "Speech services, facilities and requirements";Part 2: "Speech services, radio interface";Part 3: "Speech services, network aspects".Transposition datesDate of adoption of this ETS: 24 July 1998Date of latest announcement of this ETS (doa): 31 October 1998Date of latest publication of new National Standardor endorsement of this ETS (dop/e): 30 April 1999Date of withdrawal of any conflicting National Standard (dow): 30 April 1999IntroductionThe Terrestrial Flight Telecommunication System (TFTS) aircraft station was specified by the EuropeanAirlines Electronic Committee (EAEC) and has subsequently been adopted as Aeronautical RadioIncorporated (ARINC) Characteristic 752 [2] by the Airlines Electronic Engineering Committee (AEEC).ARINC Characteristic 752 [2] makes reference to this ETS for the specification of certain radio andtelecommunication matters to avoid ambiguity. The TFTS aircraft station is one of a set of facilities withinan overall architecture being defined for aircraft on-board telecommunications by the AEEC.There are supplementary specifications defining the provision of functions or services outside the scope ofthis specification.SIST ETS 300 326-1:1999

Page 6ETS 300 326-1: August 1998Blank pageSIST ETS 300 326-1:1999

Page 7ETS 300 326-1: August 19981ScopeThis European Telecommunication Standard (ETS) specifies the minimum technical requirements of theservices, facilities and functions that the Terrestrial Flight Telecommunication System (TFTS) supports toprovide a pan-European terrestrial aeronautical public correspondence service.This ETS contains the specification of equipment for the provision of a terrestrial aeronautical publiccorrespondence service working in the frequency spectrum bands allocated at World Administrative RadioConference 1992 (WARC 92) (1 670 to 1 675 MHz and 1 800 to 1 805 MHz).This ETS fully specifies aspects of the radio interface and Terrestrial Flight Telecommunication System(TFTS) ground network required to maintain inter-operability of equipment. ERC DecisionERC/DEC/(92)01 [1] is applicable to the TFTS frequency spectrum within Europe.This ETS includes a general description of the TFTS which is of informative nature.The specification of data application and facsimile is the subject of ES 200 794 [12].The delivery mechanism for Packet Data Services is defined in ETS 300 752 [11].The commercial aspects of service definition are outside the scope of this ETS except where it isnecessary for this information to be considered due to its impact on technical specification matters.The scope of this part of the ETS has been confined to the set of services to be provided by the phase 1standard. An informative subclause 5.4 has been included describing the service definitions that maysubsequently be specified for uplink calling, facsimile, data services and low rate speech services.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 listed hereafter.For dated references, subsequent amendments to or revisions of any of these publications apply to thisETS only when incorporated in it by amendment or revision. For undated references the latest edition ofthe publication referred to applies.[1]ERC Decision ERC/DEC/(92)01 (1991): "Decision on the frequency bands to bedesignated for the coordinated introduction of the Terrestrial FlightTelecommunications System (TFTS)".[2]ARINC Characteristic 752 (1993): "Terrestrial Flight Telecommunication System(TFTS) Airborne Radio Subsystem".[3]ARINC Characteristic 746: "Cabin Communications System".[4]ETS 300 085 (1990): "Integrated Services Digital Network (ISDN); 3,1 kHztelephony teleservice Attachment requirements for handset terminals".[5]ETS 300 326-2: "Electromagnetic Compatibility and Radio Spectrum Matters(ERM); Terrestrial Flight Telecommunications System (TFTS); Part 2: Speechservices, radio interface".[6]ETS 300 326-3: "Electromagnetic Compatibility and Radio Spectrum Matters(ERM); Terrestrial Flight Telecommunications System (TFTS); Part 3: Speechservices, network aspects".[7]CCITT Recommendation G.165 (1988): "Echo cancellers".[8]CCITT Recommendation E.164 (1991): "Numbering plan for the ISDN era".[9]Inmarsat Aeronautical Satellite System Definition Manual Module 5 (March1993): "Circuit mode service voice codec algorithm and terminal interfacefunction specification for facsimile and data services, Version 3 and corrigenda".SIST ETS 300 326-1:1999

Page 8ETS 300 326-1: August 1998[10]ARINC Characteristic 741: "Aviation satellite Communication System,Parts 1 to 4".[11]ETS 300 752: "Radio Equipment and Systems (RES); Terrestrial FlightTelecommunications System (TFTS); Packet mode data".[12]ES 200 794: "Electromagnetic Compatibility and Radio spectrum Matters (ERM);Terrestrial Flight Telecommunications System (TFTS); Circuit-mode voice-banddata services; Part 1: Group 3 fax support".[13]ITU-T Recommendation V.21 (1988): "300 bits per second duplex modemstandardized for use in the general switched telephone network".[14]ITU-T Recommendation V.22 bis (1988):"2 400 bits per second duplex modemusing the frequency division technique standardized for use on the generalswitched telephone network and on point-to-point 2-wire leased telephone-typecircuits".3Definitions and abbreviations3.1DefinitionsFor the purposes of this ETS, the following definitions apply:bearer service: A type of telecommunication service that provides the capability for the transmission ofsignals between user - network interfaces.teleservice: A type of telecommunication service that provides the complete capability, including terminalequipment functions, for communication between users according to protocols established by agreementbetween administrations and/or Recognized Private Operating Agencies (RPOAs).3.2AbbreviationsFor the purposes of this ETS, the following abbreviations apply:AECAircraft Equipment CodeAEECAirlines Electronic Engineering CommitteeAENAircraft Equipment NumberARINCAeronautical Radio INCorporatedASAircraft StationASIAircraft Station IdentityATAvionics TerminationATEAircraft Telecommunications EquipmentATEIAircraft Termination Equipment IdentifierATISDNAircraft Termination ISDNCCITTConsultative Committee on International Telegraphy and TelephonyCDSCabin Distribution SystemCSCabin SystemsCTUCabin Telecommunications UnitDTMFDual Tone Multi FrequencyEAECEuropean Airlines Electronics CommitteeFACFinal Assembly CodeGCCGround switching Centre CodeGCTGround station Cell TypeGENGround station Equipment NumberGSGround StationGSCGround Switching CentreGSICGround Station Identity CodeGSLATGround Station LatitudeGSLONGGround Station LongitudeGSNGround station Serial NumberGSSGround Station SystemSIST ETS 300 326-1:1999

Page 9ETS 300 326-1: August 1998ICAOInternational Civil Aviation OrganizationISDNIntegrated Services Digital NetworkMMMobility ManagementMSBMost Significant BitNDCNational Destination CodeNMNetwork ManagementPADPacket Assembler-DisassemblerPWRCTLPoWeR ConTroL level adjustmentRMINReceiver MINimum acceptable signal levelRPOARecognized Private Operating AgencySNRSerial NumbeRSPService ProviderTACType Approval CodeTDMATime Division Multiple AccessTFTSTerrestrial Flight Telecommunication SystemTIMnetwork TIMeTOTelecom OperatorUNUser NumberUTCCoordinated Universal TimeWARC 92World Administrative Radio Conference 19924General description of the TFTSThis clause contains an informative description of the TFTS. The basic TFTS architecture is describedtogether with a brief explanation of the various functional entities of the system. When appropriate,reference is made to other parts of this ETS where more detailed descriptions of functional entities areprovided. Reference has also been made to possible connections to external systems which are beyondthe scope of this ETS. These references are not intended to imply any technical or commercialimplementation for the service provided by TFTS.4.1Purpose of the TFTSThe TFTS provides a radio communication link between aircraft and ground stations which have access topublic fixed telecommunications networks. This enables aircraft passengers or users to access publictelecommunications services from the air. The principal services supported by the TFTS are as follows:a)telephony;b)facsimile group 3;c)paging services;d)data services.The services provided by TFTS are primarily aimed at commercial airliners but this does not preclude useof the system by smaller commercial regional aircraft operators or the general aviation sector.4.2Service coverageThe radio system of the TFTS is similar in nature to the cellular systems of the land mobile service. Thereare some important differences, especially the cell radii (typically 240 km) and the height coverage (inexcess of 43 000 feet). The mobiles of the service are aircraft in flight or on the ground in the starting orfinishing phases of flight.Three cell types are specified:en-route: providing a large area coverage at altitude;intermediate: providing coverage at lower altitude where required, especially in the vicinity of airports; andairport stations: for use on or immediately above the ground.SIST ETS 300 326-1:1999

Page 10ETS 300 326-1: August 19984.3TFTS architectureFigure 1 provides an illustrative overview of the telecommunications services to be provided to aircraft.Figure 2 provides a schematic block diagram of a terrestrial aeronautical telecommunication systemshowing the position of the TFTS elements.Figure 1: Aeronautical telecommunication services overviewSIST ETS 300 326-1:1999

Page 11ETS 300 326-1: August 1998Figure 2: TFTS block diagram4.3.1Aircraft Station (AS)The AS consists of three main entities:Avionics Termination (AT): provides the radio, control and telecommunications functions necessary forthe TFTS;Aircraft Telecommunications Equipment (ATE): provides on board switching and other functions forthe aircraft telecommunication facilities. Many of these on-board facilities would be realized in the CabinTelecommunications Unit (CTU) defined in ARINC Characteristic 746 [3]. ARINC are also defining thecharacteristics of a Cabin Distribution System (CDS); andCabin System (CS): provides telecommunication facilities to the passenger.The ATE and the CS may be realized in several ways with a variety of facilities. The specification of theseentities is outside the scope of this ETS. The ATE and CS may also support satellite and other terrestrialtelecommunication services. Aviation aspects of the AT, ATE and CS have been characterized by theEAEC and the AEEC. Aspects of the AT are published in ARINC Characteristic 752 [2]. Aspects of theATE are published in ARINC Characteristic 746 [3].SIST ETS 300 326-1:1999

Page 12ETS 300 326-1: August 19984.3.2Ground Station (GS)The GS provides the radio communication, line transmission and some limited control functions necessaryfor supporting simultaneous radio communication with several aircraft using the TFTS. The different typesof ground station are analogous to the cell types of the TFTS which are described in subclause 4.2.4.3.3Ground Switching Centre (GSC)The GSC provides the switching, control and fixed network access functions for the TFTS. Sometransmission control functions such as echo control may also be provided at a GSC. In addition, the GSCmay provide interfaces to other external systems required to provide a commercial public aeronauticalcorrespondence service (e.g. billing system, network management system).NOTE:A combination of GSs and an associated GSC is referred to as a Ground StationSystem (GSS).4.3.4Radio interfaceThe TFTS radio interface is described in ETS 300 326-2 [5]. The access types employed are TimeDivision Multiplex (TDM)/Time Division Multiple Access (TDMA) providing an aircraft capacity of four voicechannels per radio carrier when using standard rate speech coding. The carrier may also be configured toprovide several data services and a group 3 facsimile service. A lower rate speech service may also besupported when suitable voice coding devices are available.4.3.5Fixed network interfaceThe TFTS fixed network interface is characterized in terms of the services and facilities that would berequired for the TFTS to fully, and correctly, inter-work with the fixed network. Detailed networkinterworking specifications are not provided within this ETS as it is recognized that network and signallingvariations exist in each country's fixed network(s).4.3.6Interfaces with other systemsThe TFTS may interface to one or more administrative and network management systems. The realizationof these systems is outside the scope of this ETS and is a matter for the operators and users of the TFTS.5TFTS telecommunication servicesThe telecommunication services supported by TFTS are described in the general framework of bearerservices, teleservices and supplementary services. These descriptions are characterized by attributesdefining particular aspects of the service to be provided.5.1TFTS bearer servicesBearer services are characterized
...