SIST EN 300 176-2 V1.5.1:2006
(Main)Digital Enhanced Cordless Telecommunications (DECT); Test specification; Part 2: Speech
Digital Enhanced Cordless Telecommunications (DECT); Test specification; Part 2: Speech
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.
Digitalne izboljšane brezvrvične telekomunikacije (DECT) – Specifikacija preskusa – 2. del: Govor
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 300 176-2 V1.5.1:2006
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:
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EUH]YUYLþQHWHOHNRPXQLNDFLMH Telecommunications (DECT)
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SIST EN 300 176-2 V1.5.1:2006 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 300 176-2 V1.5.1:2006
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SIST EN 300 176-2 V1.5.1:2006
ETSI EN 300 176-2 V1.5.1 (2004-01)
European Standard (Telecommunications series)
Digital Enhanced Cordless Telecommunications (DECT);
Test specification;
Part 2: Speech
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SIST EN 300 176-2 V1.5.1:2006
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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SIST EN 300 176-2 V1.5.1:2006
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
ETSI
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SIST EN 300 176-2 V1.5.1:2006
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
ETSI
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SIST EN 300 176-2 V1.5.1:2006
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
ETSI
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SIST EN 300 176-2 V1.5.1:2006
6 ETSI EN 300 176-2 V1.5.1 (2004-01)
B.3 Measurement.
...
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