ETSI EN 300 176-2 V1.5.1 (2004-01)

SLOVENSKI STANDARD
01-marec-2006
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Digital Enhanced Cordless Telecommunications (DECT); Test specification; Part 2:
Speech
Ta slovenski standard je istoveten z: EN 300 176-2 Version 1.5.1
ICS:
33.070.30 'LJLWDOQHL]EROMãDQH Digital Enhanced Cordless
EUH]YUYLþQHWHOHNRPXQLNDFLMH Telecommunications (DECT)
'(&7
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

European Standard (Telecommunications series)

Digital Enhanced Cordless Telecommunications (DECT);
Test specification;
Part 2: Speech
2 ETSI EN 300 176-2 V1.5.1 (2004-01)

Reference
REN/DECT-000220
Keywords
DECT, radio, regulation, speech, testing, voice
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ETSI
3 ETSI EN 300 176-2 V1.5.1 (2004-01)
Contents
Intellectual Property Rights.7
Foreword.7
1 Scope.8
2 References.9
3 Definitions, symbols and abbreviations .10
3.1 Definitions.10
3.2 Symbols.12
3.3 Abbreviations.12
4 Interpretation of the measurement results .13
5 General test requirements.13
5.1 Test philosophy.13
5.1.1 Equipment supporting an ETSI approved profile .13
5.1.2 Equipment not supporting an ETSI approved profile .14
5.1.3 Applicant's declaration.15
5.2 Low noise room.15
5.3 Lower Tester (LT).15
5.3.1 Description.15
5.3.2 Connections between the EUT and the LT .15
5.3.3 Functions and abilities .15
5.3.4 Measurement uncertainty.15
6 General testing conditions.16
6.1 Environment for tests.16
6.2 Power supply limitations .16
6.3 Power source.16
7 Speech and telephony tests.16
7.1 Test configurations.16
7.1.1 General.16
7.1.2 Testing a DECT system .17
7.1.3 Testing a separate PP or FP .17
7.1.4 Reference FP (ReFP) and Reference PP (RePP).18
7.1.5 Applicability of tests.19
7.2 Digital signal level.19
7.3 General conditions of test.20
7.4 Ideal codec.20
7.5 Electro-acoustical equipment.20
7.6 Speech coding scheme.21
7.6.1 Requirement for speech coding algorithm.21
7.6.2 Applicant's declaration on speech coding algorithm.21
7.6.3 Requirement for the TAP in the FP .21
7.6.4 Applicant's declaration on the TAP in the FP .21
7.7 PP sending frequency response .21
7.7.1 Requirement.21
7.7.2 Method of measurement.22
7.8 PP receiving frequency response.22
7.8.1 Requirement.23
7.8.2 Method of measurement.23
7.9 PP loudness rating .24
7.9.1 Requirement.24
7.9.2 Method of measurement.24
7.9.2.1 SLR .24
H
7.9.2.2 RLR .24
H
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4 ETSI EN 300 176-2 V1.5.1 (2004-01)
7.10 User controlled volume control in the PP.24
7.10.1 Requirement.24
7.10.2 Method of measurement.25
7.10.2.1 SLR .25
H
7.10.2.2 RLR .25
H
7.11 PP talker sidetone masking rating .25
7.11.1 Requirement.25
7.11.2 Method of measurement.25
7.12 Listener SideTone (LST).25
7.12.1 LSTR requirement.25
7.12.2 Protocol requirement for EUTs with declared noise rejection capability .26
7.12.3 Method of measurement for LSTR .26
7.12.4 Method of measurement for the protocol requirement for EUTs with declared noise rejection
capability applying to be tested separately .26
7.12.5 Applicant's declaration for the protocol requirement for EUTs applying to be tested as a DECT
system .27
7.13 Terminal Coupling Loss (TCLw) of a PP .27
7.13.1 TCLw requirement.27
7.13.2 Protocol requirement.27
7.13.3 Method of measurement for TCLw for a PP being tested separately .27
7.13.4 Method of measurement for TCLw for a PP being tested as part of a DECT system.28
7.13.5 Method of measurement for the protocol requirement for EUTs applying to be tested separately.28
7.13.6 Applicant's declaration for the protocol requirement for EUTs applying to be tested as a DECT
system .28
7.14 FP echo control functions with a 4-wire interface.28
7.14.1 Static requirements.28
7.14.2 Dynamic requirements.29
7.14.2.1 Minimum TCLw.29
7.14.2.2 Full TCLw.29
7.14.3 Artificial echo loss of a FP with a 4-wire interface .29
7.14.3.1 Requirement for artificial echo loss .29
7.14.3.2 Requirement for the ability to disable the artificial echo loss .29
7.14.3.3 Method of measurement of artificial echo loss .29
7.14.3.4 Method of measurement for ability to disable artificial echo loss.30
7.14.3.4.1 EUTs being tested as separate items.30
7.14.3.4.2 EUTs being tested as a DECT system with a PP having full TCLw .30
7.14.4 Echo control device of a FP with a 4-wire interface.30
7.14.4.1 Requirement for the echo control device .30
7.14.4.2 Requirement for the ability to disable the echo control device .30
7.14.4.3 Method of measurement for the echo control device .30
7.14.4.4 Method of measurement for the ability to disable the echo control function.30
7.14.4.4.1 EUTs being tested as separate items.30
7.14.4.4.2 EUTs being tested as a DECT system with a PP having full TCLw .31
7.15 Stability loss - fixed geometry.31
7.15.1 Requirement.31
7.15.2 Method of measurement.31
7.16 Stability loss variable geometry .31
7.16.1 Requirement.31
7.16.2 Method of measurement.31
7.17 Sending distortion.32
7.17.1 Requirement.32
7.17.2 Method of measurement.32
7.18 Receiving distortion.32
7.18.1 Requirement.32
7.18.2 Method of measurement.32
7.19 Side tone distortion.32
7.19.1 Requirement.32
7.19.2 Method of measurement.32
7.20 Out of band (sending).33
7.20.1 Requirement.33
7.20.2 Method of measurement.33
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5 ETSI EN 300 176-2 V1.5.1 (2004-01)
7.21 Out of band (receiving) .33
7.21.1 Requirement.33
7.21.2 Method of measurement.33
7.22 Sending noise.34
7.22.1 Requirement.34
7.22.2 Method of measurement.34
7.23 Sending noise (narrow band).34
7.23.1 Requirement.34
7.23.2 Method of measurement.34
7.24 Receiving noise.34
7.24.1 Requirement.34
7.24.2 Method of measurement.34
7.25 Sampling frequency level (receiving).35
7.25.1 Requirement.35
7.25.2 Method of measurement.35
7.26 Acoustic shock.35
7.27 DECT network delay.35
7.27.1 Requirement.35
7.27.2 Method of measurement.35
7.28 PP delay.37
7.28.1 Requirement.37
7.28.2 Method of measurement.37
7.29 FP delay.38
7.29.1 Requirement.38
7.29.2 Method of measurement.38
7.30 Echo control at the network side .40
7.30.1 Requirement.40
7.30.2 Method of measurement.40
7.30.2.1 4-wire interface.40
7.30.2.2 Analogue 2-wire interface.41
7.30.2.2.1 Requirement 1.41
7.30.2.2.2 Requirement 2.42
7.31 Variation of gain with input level-sending .43
7.31.1 Requirement.43
7.31.2 Method of measurement.43
7.32 Variation of gain with input level-receiving.43
7.32.1 Requirement.43
7.32.2 Method of measurement.44
7.33 Additional requirements for DECT systems provided with a 2-wire PSTN interface.44
7.33.1 General.44
7.33.1.1 Polarity independence.44
7.33.1.2 Feed Conditions.44
7.33.1.3 Power supply.44
7.33.1.4 Volume control.44
7.33.2 Speech performance characteristics.45
7.33.2.1 Sensitivity/frequency response.45
7.33.2.2 Sending and Receiving Loudness Ratings (SLR and RLR) .45
7.33.2.3 Sidetone.45
7.33.2.4 Distortion.45
7.33.2.5 Linearity (variation of gain with input level) .45
7.33.2.6 Noise.45
7.33.2.7 Instability.45
7.33.2.8 Echo return loss.45
8 Loudspeaking and handsfree telephony .46
Annex A (informative): Justification for Requirements .47
Annex B (informative): Description of the CSS.49
B.1 General.49
B.2 Test signal.49
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6 ETSI EN 300 176-2 V1.5.1 (2004-01)
B.3 Measurement.50
B.4 Calculation.50
Annex C (normative): Description of the cross-correlation method .53
C.1 Test signal.53
C.2 Calculation.53
Annex D (informative): Acoustic shock requirements .54
D.1 Continuous signal.54
D.2 Peak signal.54
Annex E (informative): Bibliography.55
History .56

ETSI
7 ETSI EN 300 176-2 V1.5.1 (2004-01)
Intellectual Property Rights
IPRs essential or potentially essential to the present document may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (http://webapp.etsi.org/IPR/home.asp).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Foreword
This European Standard (Telecommunications series) has been produced by ETSI Project Digital Enhanced Cordless
Telecommunications (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 [1] to 8 [8]. Further details of the DECT
system may be found in the ETSI Technical Reports, TR 101 178 [31] and ETR 043 [32].
The present document is part 2 of a multi-part deliverable covering the approval test specification for Digital Enhanced
Cordless Telecommunications (DECT), as identified below:
Part 1: "Radio";
Part 2: "Speech".
National transposition dates
Date of adoption of this EN: 19 December 2003
Date of latest announcement of this EN (doa): 31 March 2004
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 30 September 2004
Date of withdrawal of any conflicting National Standard (dow): 30 September 2004

ETSI
8 ETSI EN 300 176-2 V1.5.1 (2004-01)
1 Scope
The present document specifies the 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 testing other or
extended frequency bands) and the tests applicable to DECT speech transmission using ITU-T Recommendation
G.726 [17] 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 [1] to 8 [8] which are relevant to these aims.
The tests of EN 300 176 are split into two parts:
- part 1 covers testing of radio frequency parameters, security elements and those DECT protocols that facilitate
the radio frequency tests and efficient use of frequency spectrum;
- part 2 (the present document) describes testing of DECT 32 kbit/s ADPCM speech requirements between
network interface and DECT PT, or between a DECT CI air interface and alternatively a DECT PT or FT.
This part is not applicable to terminal equipment specially designed for the disabled (e.g. with amplification
of received speech as an aid for the hard of hearing).
DECT terminal equipment consists of the following elements:
a) Fixed Part (FP);
b) Portable Part (PP);
c) Cordless Terminal Adapter (CTA);
d) Wireless Relay Station (WRS) (FP and PP combined).
The present document is structured to allow tests of either:
a) the FP and PP together; or
b) 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.
ETSI
9 ETSI EN 300 176-2 V1.5.1 (2004-01)
2 References
The following documents contain provisions which, through reference in this text, constitute provisions of the present
document.
• References are either specific (identified by date of publication and/or edition number or version number) or
non-specific.
• For a specific reference, subsequent revisions do not apply.
• For a non-specific reference, the latest version applies.
Referenced documents which are not found to be publicly available in the expected location might be found at
http://docbox.etsi.org/Reference.
[1] ETSI EN 300 175-1: "Digital Enhanced Cordless Telecommunications (DECT); Common
Interface (CI); Part 1: Overview".
[2] ETSI EN 300 175-2: "Digital Enhanced Cordless Telecommunications (DECT); Common
Interface (CI); Part 2: Physical layer (PHL)".
[3] ETSI EN 300 175-3: "Digital Enhanced Cordless Telecommunications (DECT); Common
Interface (CI); Part 3: Medium Access Control (MAC) layer".
[4] ETSI EN 300 175-4: "Digital Enhanced Cordless Telecommunications (DECT); Common
Interface (CI); Part 4: Data Link Control (DLC) layer".
[5] ETSI EN 300 175-5: "Digital Enhanced Cordless Telecommunications (DECT); Common
Interface (CI); Part 5: Network (NWK) layer".
[6] ETSI EN 300 175-6: "Digital Enhanced Cordless Telecommunications (DECT); Common
Interface (CI); Part 6: Identities and addressing".
[7] ETSI EN 300 175-7: "Digital Enhanced Cordless Telecommunications (DECT); Common
Interface (CI); Part 7: Security features".
[8] ETSI EN 300 175-8: "Digital Enhanced Cordless Telecommunications (DECT); Common
Interface (CI); Part 8: Speech coding and transmission".
[9] ETSI ETS 300 111: "Integrated Services Digital Network (ISDN); Telephony 3,1 kHz teleservice;
Service description".
[10] ETSI TBR 008 (1998): "Integrated Services Digital Network (ISDN); Telephony 3,1 kHz
teleservice; Attachment requirements for handset terminals".
[11] ITU-T Recommendation G.101 (2003): "The transmission plan".
[12] ITU-T Recommendation G.111 (1993): "Loudness ratings (LRs) in an international connection".
[13] ITU-T Recommendation G.122 (1993): "Influence of national systems on stability and talker echo
in international connections".
[14] ITU-T Recommendation G.223 (1988): "Assumptions for the calculation of noise on hypothetical
reference circuits for telephony".
[15] ITU-T Recommendation G.711 (1988): "Pulse code modulation (PCM) of voice frequencies".
[16] ITU-T Recommendation G.712 (2001): "Transmission performance characteristics of pulse code
modulation channels".
[17] ITU-T Recommendation G.726 (1990): "40, 32, 24, 16 kbit/s Adaptive Differential Pulse Code
Modulation (ADPCM)".
[18] ITU-T Recommendation O.132 (1988): "Quantizing distortion measuring equipment using a
sinusoidal test signal".
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10 ETSI EN 300 176-2 V1.5.1 (2004-01)
[19] ITU-T Recommendation O.133 (1993): "Equipment for measuring the performance of PCM
encoders and decoders".
[20] ITU-T Recommendation P.50 (1999): "Artificial voices".
[21] ITU-T Recommendation P.51 (1996): "Artificial mouth".
[22] ITU-T Recommendation P.57 (2002): "Artificial ears".
[23] ITU-T Recommendation P.64 (1999): "Determination of sensitivity/frequency characteristics of
local telephone systems".
[24] ITU-T Recommendation P.79 (1999): "Calculation of loudness ratings for telephone sets".
[25] ISO 3 (1973): "Preferred numbers - Series of preferred numbers".
[26] ISO 9614: "Acoustics - Determination of sound power levels of noise sources using sound
intensity".
[27] ETSI TBR 038: "Public Switched Telephone Network (PSTN); Attachment requirements for a
terminal equipment incorporating an analogue handset function capable of supporting the justified
case service when connected to the analogue interface of the PSTN in Europe".
[28] ETSI EN 300 700: "Digital Enhanced Cordless Telecommunications (DECT); Wireless Relay
Station (WRS)".
[29] ETSI EN 300 176-1: "Digital Enhanced Cordless Telecommunications (DECT); Test
specification; Part 1: Radio".
[30] ETSI I-ETS 300 245-3: "Integrated Services Digital Network (ISDN); Technical characteristics of
telephony terminals; Part 3: Pulse Code Modulation (PCM) A-law, loudspeaking and handsfree
telephony".
[31] ETSI TR 101 178: "Digital Enhanced Cordless Telecommunications (DECT); A High Level Guide
to the DECT Standardization".
[32] ETSI ETR 043: "Digital Enhanced Cordless Telecommunications (DECT); Common Interface
(CI); Services and facilities requirements specification".
[33] Council Directive 73/23/EEC of 19 February 1973 on the harmonization of the laws of Member
States relating to electrical equipment designed for use within certain voltage limits (Low Voltage
Directive).
3 Definitions, symbols and abbreviations
3.1 Definitions
For 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 TAP
conducted 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 of channels always use the same radio Frequency (RF) carrier and always use evenly spaced slots
(i.e. separated by 0,5 Time Division Multiple Access (TDMA) frame)
Cordless Terminal Adapter (CTA): physical grouping that contains a DECT portable termination and a line interface
Equipment Under Test (EUT): equipment submitted to the test laboratory for type examination
ETSI
11 ETSI EN 300 176-2 V1.5.1 (2004-01)
fixed geometry PP: PP in which the electro-acoustic transducers and their associated acoustic components are held in
fixed relative positions and/or orientations during all on-line conditions of the PP
Fixed Part (DECT Fixed Part) (FP): physical grouping that contains all of the elements in the DECT network
between the local network and the DECT air interface
NOTE: A DECT fixed part contains the logical elements of at least one fixed radio termination, plus additional
implementation specific elements.
Fixed radio Termination (FT): logical group of functions that contains all of the DECT processes and procedures on
the fixed side of the DECT air interface
NOTE: A fixed radio termination only includes elements that are defined in EN 300 175 parts 1 [1] to 8 [8]. This
includes radio transmission elements (layer 1) together with a selection of layer 2 and layer 3 elements.
Full Slot (SLOT): one 24th of a TDMA frame which is used to support one physical channel
handset echo: echo, perceptible by the far-end user, resulting from the coupling between the receive and send
directions of the handset, mostly due to acoustic coupling between transducers
NOTE: It is particularly cumbersome in communications including a satellite and an echo canceller, as the DECT
handset echo may be out of range of the echo canceller.
inter-operability: capability of fixed parts and portable parts, that enable a portable part to obtain access to teleservices
in 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
NOTE: It is calculated according to ITU-T Recommendation G.122 [13], annex B.4, Trapezoidal rule.
Lower Tester (LT): logical grouping that contains the test equipment, a functionally equivalent DECT PT,
a functionally equivalent DECT FT and a test controller
network echo: echo, perceptible by the DECT user, resulting from reflections in the network. It is mostly due to hybrid
impairments at both ends of the communication. The protection consists of an additional echo loss located in the receive
path of the DECT system
Portable HandSet (PHS): single physical grouping that contains all of the portable elements that are needed to provide
a teleservice to the user
NOTE: Portable handset is a subset of all possible portable parts. This subset includes all physical groupings that
combine 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
NOTE 1: Portable Part (PP) is a generic term that may describe one or several physical pieces.
NOTE 2: 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 procedures
on the portable side of the DECT air interface
NOTE: A PT only includes elements that are defined in EN 300 175 parts 1 [1] to 8 [8]. This includes radio
transmission 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 for
the general public
NOTE: The term does not imply any
...