ETSI EN 300 176-2 V1.4.1 (2001-02)

SLOVENSKI STANDARD
SIST EN 300 176-2 V1.4.1:2003
01-december-2003
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Digital Enhanced Cordless Telecommunications (DECT); Approval test specification;
Part 2: Speech
Ta slovenski standard je istoveten z: EN 300 176-2 Version 1.4.1
ICS:
33.070.30 'LJLWDOQHL]EROMãDQH Digital Enhanced Cordless
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SIST EN 300 176-2 V1.4.1:2003 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 300 176-2 V1.4.1:2003

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SIST EN 300 176-2 V1.4.1:2003
ETSI EN 300 176-2 V1.4.1 (2001-02)
European Standard (Telecommunications series)
Digital Enhanced Cordless Telecommunications (DECT);
Approval test specification;
Part 2: Speech

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SIST EN 300 176-2 V1.4.1:2003
2 ETSI EN 300 176-2 V1.4.1 (2001-02)
Reference
REN/DECT-A0155-2
Keywords
DECT, radio, regulation, speech, testing, voice
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© European Telecommunications Standards Institute 2001.
All rights reserved.
ETSI

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SIST EN 300 176-2 V1.4.1:2003
3 ETSI EN 300 176-2 V1.4.1 (2001-02)
Contents
Intellectual Property Rights .7
Foreword.7
1 Scope.8
2 References.9
3 Definitions and abbreviations.10
3.1 Definitions . 10
3.2 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 . 14
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. 16
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 SLRH. 24
7.9.2.2 RLRH . 24
7.10 User controlled volume control in the PP . 24
7.10.1 Requirement . 24
ETSI

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SIST EN 300 176-2 V1.4.1:2003
4 ETSI EN 300 176-2 V1.4.1 (2001-02)
7.10.2 Method of measurement. 25
7.10.2.1 SLRH. 25
7.10.2.2 RLRH . 25
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 . 25
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 approved separately. 26
7.12.5 Applicant's declaration for the protocol requirement for EUTs applying to be approved 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 approved separately. 27
7.13.4 Method of measurement for TCLw for a PP being approved as part of a DECT system . 28
7.13.5 Method of measurement for the protocol requirement for EUTs applying to be approved separately. 28
7.13.6 Applicant's declaration for the protocol requirement for EUTs applying to be approved 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 approved as separate items . 30
7.14.3.4.2 EUTs being approved 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 . 31
7.14.4.4.1 EUTs being approved as separate items . 31
7.14.4.4.2 EUTs being approved 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. 32
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. 33
7.19.1 Requirement . 33
7.19.2 Method of measurement. 33
7.20 Out of band (sending). 33
7.20.1 Requirement . 33
7.20.2 Method of measurement. 33
7.21 Out of band (receiving). 33
7.21.1 Requirement . 33
7.21.2 Method of measurement. 34
ETSI

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SIST EN 300 176-2 V1.4.1:2003
5 ETSI EN 300 176-2 V1.4.1 (2001-02)
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. 35
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. 36
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. 39
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
ETSI

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SIST EN 300 176-2 V1.4.1:2003
6 ETSI EN 300 176-2 V1.4.1 (2001-02)
8 Loudspeaking and handsfree telephony.46
Annex A (informative): Justification for Requirements .47
Annex B (informative): Description of the CSS.50
B.1 General.50
B.2 Test signal .50
B.3 Measurement .51
B.4 Calculation .52
Annex C (normative): Description of the cross-correlation method .54
C.1 Test signal .54
C.2 Calculation .54
Annex D (informative): Acoustic shock requirements.55
D.1 Continuous signal .55
D.2 Peak signal .55
Annex E (informative): Bibliography.56
History .57
ETSI

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SIST EN 300 176-2 V1.4.1:2003
7 ETSI EN 300 176-2 V1.4.1 (2001-02)
Intellectual Property Rights
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