ETSI EN 300 176-2 V1.3.2 (1999-06)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.LNDFLMDDigital Enhanced Cordless Telecommunications (DECT); Approval test specification; Part 2: Speech33.070.30'(&7Digital Enhanced Cordless Telecommunications (DECT)ICS:Ta slovenski standard je istoveten z:EN 300 176-2 Version 1.3.2SIST EN 300 176-2 V1.3.2:2003en01-december-2003SIST EN 300 176-2 V1.3.2:2003SLOVENSKI
STANDARD
EN 300 176-2 V1.3.2 (1999-06)European Standard (Telecommunications series)Digital Enhanced Cordless Telecommunications (DECT);Approval test specification;Part 2: SpeechSIST EN 300 176-2 V1.3.2:2003

ETSIETSI EN 300 176-2 V1.3.2 (1999-06)2ReferenceREN/DECT-040118-2 (1moi0j1c.PDF)KeywordsDECT, radio, voice, testing, regulationETSIPostal addressF-06921 Sophia Antipolis Cedex - FRANCEOffice address650 Route des Lucioles - Sophia AntipolisValbonne - FRANCETel.: +33 4 92 94 42 00
Fax: +33 4 93 65 47 16Siret N° 348 623 562 00017 - NAF 742 CAssociation à but non lucratif enregistrée à laSous-Préfecture de Grasse (06) N° 7803/88Internetsecretariat@etsi.frIndividual copies of this ETSI deliverablecan be downloaded fromhttp://www.etsi.orgIf you find errors in the present document, send yourcomment to: editor@etsi.frCopyright 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.SIST EN 300 176-2 V1.3.2:2003

ETSIETSI EN 300 176-2 V1.3.2 (1999-06)3ContentsIntellectual Property Rights.7Foreword.71Scope.82References.83Definitions and abbreviations.103.1Definitions.103.2Abbreviations.124Interpretation of the measurement results.125General test requirements.135.1Test philosophy.135.1.1Equipment supporting an ETSI approved profile.135.1.2Equipment not supporting an ETSI approved profile.145.1.3Applicant's declaration.145.2Low noise room.155.3Lower Tester (LT).155.3.1Description.155.3.2Connections between the EUT and the LT.155.3.3Functions and abilities.155.3.4Measurement uncertainty.156General testing conditions.166.1Environment for tests.166.2Power supply limitations.166.3Power source.167Speech and telephony tests.167.1Test configurations.167.1.1General.167.1.2Testing a DECT system.167.1.3Testing a separate PP or FP.177.1.4Reference FP (ReFP) and Reference PP (RePP).187.1.5Applicability of tests.197.2Digital signal level.197.3General conditions of test.207.4Ideal codec.207.5Electro-acoustical equipment.207.6Speech coding scheme.217.6.1Requirement for speech coding algorithm.217.6.2Applicant's declaration on speech coding algorithm.217.6.3Requirement for the TAP in the FP.217.6.4Applicant's declaration on the TAP in the FP.217.7PP sending frequency response.217.7.1Requirement.217.7.2Method of measurement.227.8PP receiving frequency response.227.8.1Requirement.227.8.2Method of measurement.237.9PP loudness rating.247.9.1Requirement.247.9.2Method of measurement.247.9.2.1SLRH.247.9.2.2RLRH.247.10User controlled volume control in the PP.247.10.1Requirement.24SIST EN 300 176-2 V1.3.2:2003

ETSIETSI EN 300 176-2 V1.3.2 (1999-06)47.10.2Method of measurement.257.10.2.1SLRH.257.10.2.2RLRH.257.11PP talker sidetone masking rating.257.11.1Requirement.257.11.2Method of measurement.257.12Listener SideTone (LST).257.12.1LSTR requirement.257.12.2Protocol requirement for EUTs with declared noise rejection capability.267.12.3Method of measurement for LSTR.267.12.4Method of measurement for the protocol requirement for EUTs with declared noise rejectioncapability applying to be approved separately.267.12.5Applicant's declaration for the protocol requirement for EUTs applying to be approved as a DECTsystem.277.13Terminal Coupling Loss (TCLw) of a PP.277.13.1TCLw requirement.277.13.2Protocol requirement.277.13.3Method of measurement for TCLw for a PP being approved separately.277.13.4Method of measurement for TCLw for a PP being approved as part of a DECT system.287.13.5Method of measurement for the protocol requirement for EUTs applying to be approved separately.287.13.6Applicant's declaration for the protocol requirement for EUTs applying to be approved as a DECTsystem.287.14FP echo control functions with a 4-wire interface.287.14.1Static requirements.287.14.2Dynamic requirements.297.14.2.1Minimum TCLw.297.14.2.2Full TCLw.297.14.3Artificial echo loss of a FP with a 4-wire interface.297.14.3.1Requirement for artificial echo loss.297.14.3.2Requirement for the ability to disable the artificial echo loss.297.14.3.3Method of measurement of artificial echo loss.297.14.3.4Method of measurement for ability to disable artificial echo loss.307.14.3.4.1EUTs being approved as separate items.307.14.3.4.2EUTs being approved as a DECT system with a PP having full TCLw.307.14.4Echo control device of a FP with a 4-wire interface.307.14.4.1Requirement for the echo control device.307.14.4.2Requirement for the ability to disable the echo control device.307.14.4.3Method of measurement for the echo control device.307.14.4.4Method of measurement for the ability to disable the echo control function.307.14.4.4.1EUTs being approved as separate items.307.14.4.4.2EUTs being approved as a DECT system with a PP having full TCLw.317.15Stability loss - fixed geometry.317.15.1Requirement.317.15.2Method of measurement.317.16Stability loss variable geometry.317.16.1Requirement.317.16.2Method of measurement.317.17Sending distortion.327.17.1Requirement.327.17.2Method of measurement.327.18Receiving distortion.327.18.1Requirement.327.18.2Method of measurement.327.19Side tone distortion.327.19.1Requirement.327.19.2Method of measurement.327.20Out of band (sending).337.20.1Requirement.337.20.2Method of measurement.337.21Out of band (receiving).33SIST EN 300 176-2 V1.3.2:2003

ETSIETSI EN 300 176-2 V1.3.2 (1999-06)57.21.1Requirement.337.21.2Method of measurement.337.22Sending noise.347.22.1Requirement.347.22.2Method of measurement.347.23Sending noise (narrow band).347.23.1Requirement.347.23.2Method of measurement.347.24Receiving noise.347.24.1Requirement.347.24.2Method of measurement.347.25Sampling frequency level (receiving).357.25.1Requirement.357.25.2Method of measurement.357.26Acoustic shock.357.27DECT network delay.357.27.1Requirement.357.27.2Method of measurement.367.28PP delay.377.28.1Requirement.377.28.2Method of measurement.377.29FP delay.387.29.1Requirement.387.29.2Method of measurement.397.30Echo control at the network side.407.30.1Requirement.407.30.2Method of measurement.407.30.2.14-wire interface.407.30.2.2Analogue 2-wire interface.417.30.2.2.1Requirement 1.417.30.2.2.2Requirement 2.427.31Variation of gain with input level-sending.437.31.1Requirement.437.31.2Method of measurement.437.32Variation of gain with input level- receiving.437.32.1Requirement.437.32.2Method of measurement.447.33Additional requirements for DECT systems provided with a 2-wire PSTN interface.447.33.1General.447.33.1.1Polarity independence.447.33.1.2Feed Conditions.447.33.1.3Power supply.447.33.1.4Volume control.447.33.2Speech performance characteristics.457.33.2.1Sensitivity/frequency response.457.33.2.2Sending and Receiving Loudness Ratings (SLR and RLR).457.33.2.3Sidetone.457.33.2.4Distortion.457.33.2.5Linearity (variation of gain with input level).457.33.2.6Noise.457.33.2.7Instability.457.33.2.8Echo Return Loss.46SIST EN 300 176-2 V1.3.2:2003

ETSIETSI EN 300 176-2 V1.3.2 (1999-06)68Loudspeaking and handsfree telephony.46Annex A (informative):Essential requirement justification.47Annex B (informative):Description of the CSS.49B.1General.49B.2Test signal.49B.3Measurement.50B.4Calculation.51Annex C (normative):Description of the cross-correlation method.53C.1Test signal.53C.2Calculation.53Annex D (informative):Acoustic shock requirements.54D.1Continuous signal.54D.2Peak signal.54Bibliography.55History.56SIST EN 300 176-2 V1.3.2:2003

ETSIETSI EN 300 176-2 V1.3.2 (1999-06)7Intellectual 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 European Standard (Telecommunications series) has been produced by ETSI Project Digital Enhanced CordlessTelecommunications (DECT).The present document contains text pertaining to approval testing of the Digital Enhanced Cordless Telecommunications(DECT) Common Interface. Such text should be considered as guidance to approval (or licensing) authorities.Details of the DECT Common Interface may be found in EN 300 175 parts 1 to 7 [1] to [7]. Further details of the DECTsystem may be found in the ETSI Technical Reports, ETR 015 [33], ETR 043 [34], and ETR 056 [35].The present document is part 2 of a multi-part EN covering the approval test specification for Digital Enhanced CordlessTelecommunications (DECT), as identified below:Part 1:"Radio";Part 2:"Speech".National transposition datesDate of adoption of this EN:4 June 1999Date of latest announcement of this EN (doa):30 September 1999Date of latest publication of new National Standardor endorsement of this EN (dop/e):31 March 2000Date of withdrawal of any conflicting National Standard (dow):31 March 2000SIST EN 300 176-2 V1.3.2:2003

ETSIETSI EN 300 176-2 V1.3.2 (1999-06)81ScopeThe present document specifies the approval tests applicable to all Digital Enhanced Cordless Telecommunications(DECT) equipment accessing the DECT frequency band 1 880 MHz to 1 900 MHz (including provisions for testingother or extended frequency bands) and the approval tests applicable to DECT speech transmission using ITU-TRecommendation G.726 [18] ADPCM speech codec at 32 kbit/s.The aims of the present document are to ensure:-efficient use of frequency spectrum;-no harm done to any connected network and its services;-no harm done to other radio networks and services;-no harm done to other DECT equipment or its services;-interworking of terminal equipment via the public telecommunications network,through testing those provisions of EN 300 175, parts 1 to 8 [1] to [8] which are relevant to these aims.The tests of the present document split into two parts:-part 1 covers testing of radio frequency parameters, security elements and those DECT protocols that facilitatethe radio frequency tests and efficient use of frequency spectrum;-this part describes testing of DECT 32 kbit/s ADPCM speech requirements between network interface and DECTPT, or between a DECT CI air interface and alternatively a DECT PT or FT. This part is not applicable toterminal equipment specially designed for the disabled (e.g. with amplification of received speech as an aid forthe hard of hearing).DECT comprises two equipment elements, referred to as a Fixed Part (FP) and a Portable Part (PP). This part isstructured to allow type approval of either:a)the FP and PP together; orb)the FP and PP as separate items.Where the DECT FP is connected to a PSTN, and there are any peculiarities in the requirements for voice telephony,these shall be accommodated within the FP.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]EN 300 175-1: "Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI);Part 1: Overview".[2]EN 300 175-2: "Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI);Part 2: Physical layer (PHL)".SIST EN 300 176-2 V1.3.2:2003

ETSIETSI EN 300 176-2 V1.3.2 (1999-06)9[3]EN 300 175-3: "Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI);Part 3: Medium Access Control (MAC) layer".[4]EN 300 175-4: "Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI);Part 4: Data Link Control (DLC) layer".[5]EN 300 175-5: "Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI);Part 5: Network (NWK) layer".[6]EN 300 175-6: "Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI);Part 6: Identities and addressing".[7]EN 300 175-7: "Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI);Part 7: Security features".[8]EN 300 175-8: "Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI);Part 8: Speech coding and transmission".[9]ETS 300 111: "Integrated Services Digital Network (ISDN); Telephony 3,1 kHz teleservice;Service description".[10]Void.[11]TBR 008 (1998): "Integrated Services Digital Network (ISDN); Telephony 3,1 kHz teleservice;Attachment requirements for handset terminals".[12]ITU-T Recommendation G.101 (1996): "The transmission plan".[13]ITU-T Recommendation G.111 (1993): "Loudness ratings (LRs) in an international connection".[14]ITU-T Recommendation G.122 (1993): "Influence of national systems on stability and talker echoin international connections".[15]CCITT Recommendation G.223 (1988): "Assumptions for the calculation of noise on hypotheticalreference circuits for telephony".[16]CCITT Recommendation G.711 (1984): "Pulse code modulation (PCM) of voice frequencies".[17]ITU-T Recommendation G.712 (1996): "Transmission performance characteristics of pulse codemodulation channels".[18]ITU-T Recommendation G.726 (1990): "40, 32, 24, 16 kbit/s adaptive differential pulse codemodulation (ADPCM)".[19]CCITT Recommendation O.132 (1988): "Quantizing distortion measuring equipment using asinusoidal test signal".[20]ITU-T Recommendation O.133 (1993): "Equipment for measuring the performance of PCMencoders and decoders".[21]ITU-T Recommendation P.50 (1993): "Artificial voices".[22]ITU-T Recommendation P.51 (1996): "Artificial mouth".[23]ITU-T Recommendation P.57 (1996): "Artificial ears".[24]ITU-T Recommendation P.64 (1997): "Determination of sensitivity/frequency characteristics oflocal telephone systems".[25]ITU-T Recommendation P.79 (1993): "Calculation of loudness ratings for telephone sets".[26]ITU-T Recommendation P.501 (1996): "Test signals for use in telephonometry".[27]ISO 3 (1973): "Preferred numbers - series of preferred numbers".SIST EN 300 176-2 V1.3.2:2003

ETSIETSI EN 300 176-2 V1.3.2 (1999-06)10[28]ISO DIS 9614: "Acoustics - Determination of sound power levels of noise sources using soundintensity".[29]TBR 038: "Public Switched Telephone Network (PSTN); Attachment requirements for a terminalequipment incorporating an analogue handset function capable of supporting the justified caseservice when connected to the analogue interface of the PSTN in Europe".[30]EN 300 700: "Digital Enhanced Cordless Telecommunications (DECT); Wireless Relay Station(WRS)".[31]TBR 006: "Digital Enhanced Cordless Telecommunications (DECT); General terminal attachmentrequirements".[32]I-ETS 300 245-3: "Integrated Services Digital Network (ISDN); Technical characteristics oftelephony terminals; Part 3: Pulse Code Modulation (PCM) A-law, loudspeaking and handsfreetelephony".[33]ETR 015: "Digital Enhanced Cordless Telecommunications (DECT); Reference document".[34]ETR 043: "Digital Enhanced Cordless Telecommunications (DECT); Common interface; Servicesand facilities requirements specification".[35]ETR 056: "Digital Enhanced Cordless Telecommunications (DECT); System descriptiondocument".[36]73/23/EEC: "Council Directive of 19 February 1973 on the harmonization of the laws of theMember States relating to electrical equipment designed for use within certain voltage limits" (LowVoltage Directive).[37]98/13/EC: "Council Directive of 12 February 1998 on the approximation of the laws of theMember States concerning telecommunications terminal equipment and satellite earth stationequipment, including the mutual recognition of their conformity" (Terminal Directive).3Definitions and abbreviations3.1DefinitionsFor the purposes of the present document, the following terms and definitions apply:Acoustic Reference Level (ARL): acoustic level that corresponds to a power level of -10 dBm0 at the TAPconducted measurements: measurements which are made using a direct connection to the Equipment Under Test(EUT)dBPa: sound pressure level relative to 1 Pa (no weighting)duplex bearer: use of two simplex bearers operating in opposite directions on two physical channels. These pairs ofchannels always use the same radio Frequency (RF) carrier and always use evenly spaced slots (i.e. separated by 0,5Time Division Multiple Access (TDMA) frame)Equipment Under Test (EUT): equipment submitted to the test laboratory for type examinationfixed geometry PP: PP in which the electro-acoustic transducers and their associated acoustic components are held infixed relative positions and/or orientations during all on-line conditions of the PPFixed Part (DECT Fixed Part) (FP): physical grouping that contains all of the elements in the DECT network betweenthe local network and the DECT air interfaceNOTE 1:A DECT fixed part contains the logical elements of at least one fixed radio termination, plus additionalimplementation specific elements.SIST EN 300 176-2 V1.3.2:2003

ETSIETSI EN 300 176-2 V1.3.2 (1999-06)11Fixed Radio Termination (FT): logical group of functions that contains all of the DECT processes and procedures onthe fixed side of the DECT air interfaceNOTE 2:A fixed radio termination only includes elements that are defined in EN 300 175 parts 1 to 8 [1] to [8].This includes radio transmission elements (layer 1) together with a selection of layer 2 and layer 3elements.Full Slot (SLOT): one 24th of a TDMA frame which is used to support one physical channelhandset echo: echo, perceptible by the far-end user, resulting from the coupling between the receive and send directionsof the handset, mostly due to acoustic coupling between transducers. It is particularly cumbersome in communicationsincluding a satellite and an echo canceller, as the DECT handset echo may be out of range of the echo cancellerinter-operability: capability of fixed parts and portable parts, that enable a portable part to obtain access to teleservicesin more than one location area and/or from more than one operator (more than one service provider)Local Echo Loss (LLe): sum of the reflections measured at the digital interface of the RePP. It is calculated accordingto ITU-T Recommendations G.122 [14], annex B4, Trapezoidal ruleLower Tester (LT): logical grouping that contains the test equipment, a functionally equivalent DECT PT, afunctionally equivalent DECT FT and a test controllernetwork echo: echo, perceptible by the DECT user, resulting from reflections in the network. It is mostly due to hybridimpairments at both ends of the communication. The protection consists of an additional echo loss located in the receivepath of the DECT systemPortable Handset (PHS): single physical grouping that contains all of the portable elements that are needed to providea teleservice to the userNOTE 3:Portable handset is a subset of all possible portable parts. This subset includes all physical groupings thatcombine one portable radio termination plus at least one portable application in a single physical box.Portable Part (PP): physical grouping that contains all elements between the user and the DECT air interface. PortablePart (PP) is a generic term that may describe one or several physical piecesNOTE 4:A portable part 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 interfaceNOTE 5:A PT only includes elements that are defined in EN 300 175 parts 1 to 8 [1] to [8]. This includes radiotransmission elements together with a selection of layer 2 and layer 3 elements.public: attribute indicating that the application of the so qualified term is used to provide access to a public network forthe general publicNOTE 6:The term does not imply any legal or regulatory aspect, nor does it imply any aspects of ownership.Test Access Point (TAP): Test Access Point is a digital interface with a relative level of 0 dBr providing the access tothe PCM speech channels in both transmission directionstelephony 3,1 kHz teleservice: definition for telephony 3,1 kHz teleservice is to be found in ETS 300 111 [9]NOTE 7:Work is currently being undertaken by ETSI to analyse the mouth-to-ear characteristics of voicecommunication. The results of this work can have consequences for the essential requirements of thepresent document.test laboratory: body which performs testing and is designated to perform 3rd party testingvariable geometry PP: PP that allows the position and/or orientation of its electro-acoustic transducers and theirassociated acoustic components to be changed during all on-line conditions of the PPSIST EN 300 176-2 V1.3.2:2003

ETSIETSI EN 300 176-2 V1.3.2 (1999-06)123.2AbbreviationsFor the purposes of the present document, the following abbreviations apply:ARLAcoustic Reference LevelCSSComposite Source SignaldBmdB relative to 1 mWdBm0The absolute power level in decibels referred to a point of zero relative leveldBrThe relative power level in decibelsERPEar Reference PointEUTEquipment Under TestFFTFast Fourier TransformationFPFixed PartFTFixed radio TerminationGAPGeneric Access ProfileLNRLow Noise RoomLmeSTTelephone Sidetone Path LossLLeLocal Echo lossLRGPLoudness Rating Guard-ring PositionLSTListener SidetoneLSTRListener Sidetone RatingLTLower TesterMRPMouth Reference PointPPPortable PartPTPortable radio TerminationReFPReference Fixed Part (for speech testing)RePPReference Portable Part (for speech testing)RFRadio FrequencyRLRHReceiving Loudness Rating of the Handsetrmsroot mean squareSLRHSending Loudness Rating of the HandsetSLLinear input Signal, see ITU-T Recommendation G.726 [18]SRReconstructed Signal, see ITU-T Recommendation G.726 [18]Ssi(diff) The difference of the send sensitivities between diffuse and direct soundSsi(direct)The sending sensitivities for the direct soundSTMRSideTone Masking RatingTAPTest Access PointTCLTerminal Coupling LossTCLwweighted Terminal Coupling LossTDMATime Division Multiple AccessTELRTalker Echo Loudness Rating4Interpretation of the measurement resultsThe interpretation of the results recorded in a test report for the measurements described in the present document shallbe as follows:a)the measured value related to the corresponding limit shall be used to decide whether an equipment meets theminimum requirements of the standard;b)the actual measurement uncertainty of the test laboratory carrying out the measurement, for each particularmeasurement, shall be included in the test report;c)the values of the actual measurement uncertainty shall be, for each measurement, equal to or lower than thevalues in subclause 5.3.4.SIST EN 300 176-2 V1.3.2:2003

ETSIETSI EN 300 176-2 V1.3.2 (1999-06)135General test requirementsThose functions and procedures which are optio
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