SIST EN 300 176-2 V2.3.1:2020
(Main)The present document specifies the tests applicable to all Digital Enhanced Cordless Telecommunications (DECT) equipment accessing any DECT frequency band (including applicable IMT-2000 frequency bands) and the tests applicable to DECT speech and audio transmission using any of the codecs and any of the audio specifications described in ETSI EN 300 175-8 [8]. 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 any public telecommunications network, including the ISDN/PSTN network and the Internet.
Through testing those provisions of ETSI EN 300 175-1 [1] to ETSI EN 300 175-8 [8] which are relevant to these aims. The tests of ETSI EN 300 176 are split into two parts:
• part 1 [9] 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 speech and audio requirements between network interface and DECT PT, or between a DECT CI air interface and alternatively a DECT PT or FT. The present document 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 will be accommodated within the FP.
Digitalne izboljšane brezvrvične telekomunikacije (DECT) - Specifikacija preskusa - 2. del: Zvok in govor
Ta dokument določa preskuse, ki se uporabljajo za vso opremo za digitalne izboljšane brezvrvične komunikacije (DECT), s katero se dostopa do katerega koli frekvenčnega pasu digitalnih izboljšanih brezvrvičnih komunikacij (vključno z ustreznimi frekvenčnimi pasovi po standardu IMT-2000), ter preskuse, ki se uporabljajo za govor in prenos zvoka prek digitalnih izboljšanih brezvrvičnih komunikacij, za katere se uporabijo kateri koli kodeki in katere koli specifikacije za zvok iz standarda ETSI EN 300 175-8 [8]. Cilj tega dokumenta je zagotoviti:
• učinkovito uporabo frekvenčnega spektra;
• preprečitev poškodb katerega koli priključenega omrežja in njegovih storitev;
• preprečitev poškodb drugih radijskih omrežij in storitev;
• preprečitev poškodb druge opreme za digitalne izboljšane brezvrvične komunikacije ali njenih storitev;
• medsebojno delovanje terminalske opreme prek katerega koli javnega telekomunikacijskega omrežja, vključno z digitalnim omrežjem z integriranimi storitvami (ISDN)/javnim komutiranim telefonskim omrežjem (PSTN) ter internetom,
in sicer s preskušanjem določb standardov od ETSI EN 300 175-1 [1] do ETSI EN 300 175-8 [8], ki zadevajo te cilje. Preskusi iz standarda ETSI EN 300 176 so ločeni na dva dela:
• 1. del [9] zajema preskušanje parametrov radijskih frekvenc, varnostnih elementov in protokolov digitalnih izboljšanih brezvrvičnih komunikacij, ki omogočajo lažje izvajanje preskusov radijskih frekvenc ter učinkovito uporabo frekvenčnega spektra;
• 2. del (ta dokument) opisuje preskušanje zahtev za govor in zvok med omrežnim vmesnikom ter prenosnimi radijskimi priključki digitalnih izboljšanih brezvrvičnih komunikacij (DECT PT) ali med skupnim radijskim vmesnikom digitalnih izboljšanih brezvrvičnih komunikacij (DECT CI) in prenosnim radijskim priključkom digitalnih izboljšanih brezvrvičnih komunikacij (DECT PT) ali alternativno fiksnim radijskim priključkom digitalnih izboljšanih brezvrvičnih komunikacij (DECT FT). Ta dokument se ne uporablja za terminalsko opremo, ki je namenjena posebej za invalide (npr. s povečanjem glasnosti prejetega govora kot pomočjo za naglušne osebe). Terminalska oprema digitalnih izboljšanih brezvrvičnih komunikacij je sestavljena iz naslednjih elementov:
a) fiksni del (FP),
b) prenosni del (PP),
c) brezvrvični terminalski prilagodilnik (CTA),
d) brezžična relejna postaja (WRS) (fiksni in prenosni del skupaj).
Ta dokument omogoča preskušanje:
a) fiksnega in prenosnega dela skupaj ali
b) fiksnega in prenosnega dela kot ločenih elementov.
Kadar je fiksni del digitalnih izboljšanih brezvrvičnih komunikacij povezan z javnim komutiranim telefonskim omrežjem, zahteve pa določajo posebnosti za glasovno telefonijo, bodo te vključene v fiksni del.
General Information
Standards Content (sample)
SLOVENSKI STANDARD
SIST EN 300 176-2 V2.3.1:2020
01-februar-2020
Digitalne izboljšane brezvrvične telekomunikacije (DECT) - Specifikacija preskusa
- 2. del: Zvok in govorDigital Enhanced Cordless Telecommunications (DECT) - Test specification - Part 2:
Audio and speechTa slovenski standard je istoveten z: ETSI EN 300 176-2 V2.3.1 (2019-12)
ICS:
33.070.30 Digitalne izboljšane Digital Enhanced Cordless
brezvrvične telekomunikacije Telecommunications (DECT)
(DECT)
SIST EN 300 176-2 V2.3.1:2020 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 300 176-2 V2.3.1:2020
ETSI EN 300 176-2 V2.3.1 (2019-12)
EUROPEAN STANDARD
Digital Enhanced Cordless Telecommunications (DECT);
Test specification;
Part 2: Audio and speech
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SIST EN 300 176-2 V2.3.1:2020
2 ETSI EN 300 176-2 V2.3.1 (2019-12)
Reference
REN/DECT-00343
Keywords
7 kHz, audio, codec, DECT, handsfree, IMT-
2000, loudspeaking, mobility, narrowband,
quality, radio, regulation, speech, superwideband,
TDD, TDMA, telephony, terminal, testing, voice,
wideband
ETSI
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SIST EN 300 176-2 V2.3.1:2020
3 ETSI EN 300 176-2 V2.3.1 (2019-12)
Contents
Intellectual Property Rights .............................................................................................................................. 16
Foreword ........................................................................................................................................................... 16
Modal verbs terminology .................................................................................................................................. 17
1 Scope ...................................................................................................................................................... 18
2 References .............................................................................................................................................. 19
2.1 Normative references ....................................................................................................................................... 19
2.2 Informative references ...................................................................................................................................... 22
3 Definition of terms, symbols and abbreviations ..................................................................................... 24
3.1 Terms ................................................................................................................................................................ 24
3.2 Symbols ............................................................................................................................................................ 27
3.3 Abbreviations ................................................................................................................................................... 27
4 Interpretation of the measurement results .............................................................................................. 29
5 General test requirements ....................................................................................................................... 29
5.0 General ............................................................................................................................................................. 29
5.1 Test philosophy ................................................................................................................................................ 30
5.1.1 Testable items ............................................................................................................................................. 30
5.1.2 Testing of the codecs .................................................................................................................................. 30
5.1.3 Testing of the audio types ........................................................................................................................... 30
5.1.4 Devices with analog line interfaces ............................................................................................................ 30
5.1.5 Equipment supporting an ETSI approved profile ....................................................................................... 30
5.1.6 Equipment not supporting an ETSI approved profile ................................................................................. 31
5.1.7 Applicant's declaration ................................................................................................................................ 32
6 General testing conditions ...................................................................................................................... 32
6.1 Low noise room ................................................................................................................................................ 32
6.2 Lower Tester (LT) ............................................................................................................................................ 32
6.2.1 Description .................................................................................................................................................. 32
6.2.2 Connections between the EUT and the LT ................................................................................................. 32
6.2.3 Functions and abilities ................................................................................................................................ 33
6.2.4 Measurement uncertainty ............................................................................................................................ 33
6.3 Power and environment .................................................................................................................................... 33
6.3.1 Environment for tests .................................................................................................................................. 33
6.3.2 Power supply limitations ............................................................................................................................ 33
6.3.3 Power source ............................................................................................................................................... 33
6.4 Test configurations ........................................................................................................................................... 34
6.4.1 General ........................................................................................................................................................ 34
6.4.2 Testing a DECT system .............................................................................................................................. 34
6.4.3 Testing a separate PP or FP ........................................................................................................................ 34
6.4.4 Reference FP (ReFP) and Reference PP (RePP)......................................................................................... 35
6.5 Digital signal levels .......................................................................................................................................... 36
6.5.1 Digital signal levels for codecs G.711 and G.726 ....................................................................................... 36
6.6 General test conditions ..................................................................................................................................... 36
6.7 Ideal codecs (for codecs G.726, G.711, G.722, G.729.1, MPEG-AAC and LC3plus) ..................................... 37
6.7.0 General ........................................................................................................................................................ 37
6.7.1 Ideal codec for codecs G.726, G.711 and LC3plus in NB mode ................................................................ 37
6.7.2 Ideal codec for codecs G.722, G.729.1, MPEG-4 and LC3plus (wideband mode) .................................... 38
6.7.3 Ideal codec for MPEG-4 or LC3plus (super-wideband mode) ................................................................... 39
6.7.4 Ideal codec for LC3plus in fullband mode .................................................................................................. 39
6.8 Electro-acoustical equipment ........................................................................................................................... 39
6.8.0 General ........................................................................................................................................................ 39
6.8.1 Artificial mouth and artificial ear ............................................................................................................... 39
6.8.2 Head and Torso Simulator (HATS) ............................................................................................................ 39
6.9 Speech coding scheme ...................................................................................................................................... 40
6.9.1 Requirement for speech coding algorithm .................................................................................................. 40
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6.9.2 Applicant's declaration on speech coding algorithm ................................................................................... 40
6.9.3 Requirement for the TAP in the FP ............................................................................................................ 40
6.9.4 Applicant's declaration on the TAP in the FP ............................................................................................. 40
6.10 Test setup.......................................................................................................................................................... 40
6.10.1 Set up for handset type 1a or 1b.................................................................................................................. 40
6.10.2 Set up for handset type 2a ........................................................................................................................... 40
6.10.3 Set up for handset or headset other than type 1a, 1b or 2a .......................................................................... 41
6.10.3.0 Super-wideband and fullband applications ........................................................................................... 41
6.10.3.1 Positioning handset or headset .............................................................................................................. 41
6.10.3.2 Position and calibration of HATS ......................................................................................................... 41
6.10.4 Set up for hands-free measurements ........................................................................................................... 42
6.10.4.0 Super-wideband and fullband applications ........................................................................................... 42
6.10.4.1 Positioning handsfree ............................................................................................................................ 43
6.10.4.2 Position and calibration of HATS ......................................................................................................... 49
6.10.4.2.1 Sending ............................................................................................................................................ 49
6.10.4.2.2 Receiving ......................................................................................................................................... 49
6.10.5 Set up for measurements in loudspeaking mode ......................................................................................... 50
6.10.6 Setup for background noise simulation ....................................................................................................... 50
6.10.7 Setup of variable echo path ......................................................................................................................... 51
6.10.8 Setup for testing positional robustness of handsets..................................................................................... 53
7 Test of audio specifications .................................................................................................................... 54
7.1 Overall description ........................................................................................................................................... 54
7.1.1 Introduction to DECT audio specifications ................................................................................................ 54
7.1.2 Introduction to the audio types ................................................................................................................... 54
7.1.3 List of Audio types ..................................................................................................................................... 55
7.1.4 Audio types for Portable Parts .................................................................................................................... 56
7.1.5 Audio types for Fixed Parts ........................................................................................................................ 57
7.1.6 Complete DECT system ............................................................................................................................. 57
7.1.7 Structure of the specification of the audio types ......................................................................................... 58
7.1.8 Audio Types and codecs ............................................................................................................................. 65
7.1.9 Audio Types and physical interfaces .......................................................................................................... 65
7.2 Audio types applicable to Portable Parts .......................................................................................................... 66
7.2.0 General ........................................................................................................................................................ 66
7.2.1 Performance levels of DECT Portable Parts (handsets).............................................................................. 66
7.2.2 Type 0: Reference PP (RePP) ..................................................................................................................... 67
7.2.3 PP Type 1a: "Classic" GAP narrowband handset ....................................................................................... 67
7.2.3.1 Introduction ........................................................................................................................................... 67
7.2.3.2 Compatible services and codecs ............................................................................................................ 67
7.2.3.3 Specification.......................................................................................................................................... 68
7.2.4 PP Type 1b: "Improved" GAP narrowband handset ................................................................................... 68
7.2.4.1 Introduction ........................................................................................................................................... 68
7.2.4.2 Compatible services and codecs ............................................................................................................ 68
7.2.4.3 Specification.......................................................................................................................................... 68
7.2.5 PP Type 1c: HATS-tested "standard" narrowband handset ........................................................................ 68
7.2.5.1 Introduction ........................................................................................................................................... 68
7.2.5.2 Compatible services and codecs ............................................................................................................ 68
7.2.5.3 Specification.......................................................................................................................................... 69
7.2.6 PP Type 1d: HATS-tested "improved" narrowband handset ...................................................................... 69
7.2.6.1 Introduction ........................................................................................................................................... 69
7.2.6.2 Compatible services and codecs ............................................................................................................ 69
7.2.6.3 Specification.......................................................................................................................................... 69
7.2.7 PP Type 3a: HATS tested narrowband "standard" loudspeaking handsfree ............................................... 69
7.2.7.1 Introduction ........................................................................................................................................... 69
7.2.7.2 Compatible services and codecs ............................................................................................................ 70
7.2.7.3 Specification.......................................................................................................................................... 70
7.2.8 PP Type 3b: HATS tested narrowband "improved" loudspeaking handsfree ............................................. 70
7.2.8.1 Introduction ........................................................................................................................................... 70
7.2.8.2 Compatible services and codecs ............................................................................................................ 70
7.2.8.3 Specification.......................................................................................................................................... 70
7.2.9 PP Type 2a: P.311-tested wideband handset............................................................................................... 70
7.2.9.1 Introduction ........................................................................................................................................... 70
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7.2.9.2 Compatible services and codecs ............................................................................................................ 70
7.2.9.3 Specification.......................................................................................................................................... 70
7.2.10 PP Type 2b: HATS-tested "standard" wideband handset or headset .......................................................... 71
7.2.10.1 Introduction ........................................................................................................................................... 71
7.2.10.2 Compatible services and codecs ............................................................................................................ 71
7.2.10.3 Specification.......................................................................................................................................... 71
7.2.11 PP Type 2c: HATS tested "improved" wideband handset or headset ......................................................... 71
7.2.11.1 Introduction ........................................................................................................................................... 71
7.2.11.2 Compatible services and codecs ............................................................................................................ 71
7.2.11.3 Specification.......................................................................................................................................... 71
7.2.12 PP Type 4a: HATS tested wideband "standard" loudspeaking handsfree .................................................. 72
7.2.12.1 Introduction ........................................................................................................................................... 72
7.2.12.2 Compatible services and codecs ............................................................................................................ 72
7.2.12.3 Specification.......................................................................................................................................... 72
7.2.13 PP Type 4b: HATS tested wideband "improved" loudspeaking and handsfree .......................................... 72
7.2.13.1 Introduction ........................................................................................................................................... 72
7.2.13.2 Compatible services and codecs ............................................................................................................ 72
7.2.13.3 Specification.......................................................................................................................................... 73
7.2.14 PP Type 5a: super-wideband 14 kHz handset or headset............................................................................ 73
7.2.14.1 Introduction ........................................................................................................................................... 73
7.2.14.2 Compatible services and codecs ............................................................................................................ 73
7.2.14.3 Specification.......................................................................................................................................... 73
7.2.15 PP Type 5b: super-wideband 14 kHz loudspeaking handsfree ................................................................... 73
7.2.15.1 Introduction ........................................................................................................................................... 73
7.2.15.2 Compatible services and codecs ............................................................................................................ 73
7.2.15.3 Specification.......................................................................................................................................... 73
7.2.16 PP Type 6: PPs with external 2 wire, 3,1 kHz telephony interface ............................................................. 73
7.2.16.1 Introduction ........................................................................................................................................... 73
7.2.16.2 Compatible services and codecs ............................................................................................................ 73
7.2.16.3 Specification.......................................................................................................................................... 73
7.2.17 PP Type 7a: fullband 20 kHz handset or headset ........................................................................................ 74
7.2.17.1 Introduction ........................................................................................................................................... 74
7.2.17.2 Compatible services and codecs ............................................................................................................ 74
7.2.17.3 Specification.......................................................................................................................................... 74
7.2.18 PP Type 7b: fullband 20 kHz loudspeaking handsfree ............................................................................... 74
7.2.18.1 Introduction ........................................................................................................................................... 74
7.2.18.2 Compatible services and codecs ............................................................................................................ 74
7.2.18.3 Specification.......................................................................................................................................... 74
7.2.19 PP Type 7c, d, e: fullband 20 kHz stereo audio device ............................................................................... 74
7.2.19.1 Introduction ........................................................................................................................................... 74
7.2.19.2 Compatible services and codecs ............................................................................................................ 74
7.2.19.3 Specification.......................................................................................................................................... 74
7.3 Audio transmission types applicable to Fixed Parts ......................................................................................... 75
7.3.0 General ........................................................................................................................................................ 75
7.3.1 FP Type 0: Reference FP (ReFP) ................................................................................................................ 75
7.3.2 FP Type 1a: "classical" Fixed Part for ISDN Network ............................................................................... 76
7.3.2.1 Introduction ........................................................................................................................................... 76
7.3.2.2 Compatible services and codecs ............................................................................................................ 76
7.3.2.3 Specifications ........................................................................................................................................ 76
7.3.2.3.1 Transcoding and equalization .......................................................................................................... 76
7.3.2.3.2 PP type detection ............................................................................................................................. 77
7.3.2.3.3 Activation of audio processing functions ........................................................................................ 77
7.3.2.3.4 Transmission specification .............................................................................................................. 77
7.3.3 FP Type 1b: Fixed Part for ISDN Network .......................................................................................
...
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