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SIST EN 300 175-8 V2.2.1:2009
01-maj-2009
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Digital Enhanced Cordless Telecommunications (DECT) - Common Interface (CI) - Part
8: Speech and audio coding and transmission
Ta slovenski standard je istoveten z: EN 300 175-8 Version 2.2.1
ICS:
33.070.30 'LJLWDOQHL]EROMãDQH Digital Enhanced Cordless
EUH]YUYLþQHWHOHNRPXQLNDFLMH Telecommunications (DECT)
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SIST EN 300 175-8 V2.2.1:2009 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 300 175-8 V2.2.1:2009
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SIST EN 300 175-8 V2.2.1:2009
ETSI EN 300 175-8 V2.2.1 (2009-02)
European Standard (Telecommunications series)
Digital Enhanced Cordless Telecommunications (DECT);
Common Interface (CI);
Part 8: Speech and audio coding and transmission
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SIST EN 300 175-8 V2.2.1:2009
2 ETSI EN 300 175-8 V2.2.1 (2009-02)
Reference
REN/DECT-000248-8
Keywords
7 kHz, audio, broadband, codec, DECT,
handsfree, IMT-2000, loudspeaking, mobility,
narrowband, quality, radio, speech, TDD, TDMA,
telephony, terminal
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© European Telecommunications Standards Institute 2009.
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SIST EN 300 175-8 V2.2.1:2009
3 ETSI EN 300 175-8 V2.2.1 (2009-02)
Contents
Intellectual Property Rights . 11
Foreword . 11
1 Scope . 12
2 References . 12
2.1 Normative references . 13
2.2 Informative references . 14
3 Definitions, symbols and abbreviations . 15
3.1 Definitions . 15
3.2 Symbols and abbreviations . 17
4 Configurations . 18
4.1 Reference configuration . 18
4.1.1 Basic configuration . 18
4.1.2 Portable Part (PP) . 19
4.1.2.1 Functional organization . 19
4.1.2.2 Volume control . 20
4.1.3 Fixed Part (FP) . 20
4.1.3.1 Digital interface . 20
4.1.3.2 Analog interface . 22
4.1.3.3 FP adaptive volume control . 22
4.2 Test configurations . 22
5 Encoding . 22
5.1 32 kbit/s full term (ADPCM) G.726 . 22
5.1.1 Algorithm . 22
5.1.2 Bit sequence . 23
5.1.3 Characteristics of G.726 ADPCM codec . 23
5.2 64 kbit/s PCM G.711 . 23
5.2.1 Algorithm . 23
5.2.2 Bit sequence . 23
5.2.3 Characteristics of G.711 PCM codec . 24
5.2.4 Automatic detection of FAX/modem tone and switch to G.711 . 24
5.3 Wideband speech codec G.722 at 64 kbit/s . 24
5.3.1 Algorithm . 24
5.3.2 Bit sequence . 24
5.3.3 Characteristics of G.722 wideband codec . 24
5.3.4 Optional Packet Loss Concealment algorithm (PLC) . 25
5.4 Wideband speech codec G.729.1 up to 32 kbit/s . 25
5.4.1 Algorithm . 25
5.4.2 Bit sequence . 25
5.4.3 Characteristics of G.729.1 codec . 25
5.4.4 Packet Loss Concealment algorithm (PLC) . 26
5.4.5 Supported bit rate in DECT . 26
5.5 Super-wideband MPEG-4 speech and audio coding . 26
5.5.1 Algorithm . 26
5.5.2 64 kbit/s, MPEG-4 ER AAC-LD codec . 27
5.5.3 32 kbit/s, MPEG-4 ER AAC-LD codec . 27
5.6 Other codings . 27
6 Transmission aspects . 28
6.1 Relative level . 28
6.2 Acoustic reference level . 28
6.3 Volume control . 28
7 Audio specifications . 28
7.1 Overall description . 28
7.1.1 Introduction to DECT audio specifications . 28
7.1.2 Introduction to the audio types . 28
ETSI
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SIST EN 300 175-8 V2.2.1:2009
4 ETSI EN 300 175-8 V2.2.1 (2009-02)
7.1.3 List of Audio types . 29
7.1.4 Audio types for Portable Parts . 30
7.1.5 Audio types for Fixed Parts . 31
7.1.6 Complete DECT system . 31
7.1.7 Structure of the specification of the audio types . 31
7.1.8 Audio Types and codecs . 37
7.1.9 Audio Types and physical interfaces . 37
7.2 Audio types applicable to Portable Parts . 37
7.2.1 Performance levels of DECT Portable Parts (handsets). 37
7.2.2 Type 0: Reference PP (RePP) . 38
7.2.3 PP Type 1a: "Classic" GAP narrowband handset . 38
7.2.3.1 Introduction . 38
7.2.3.2 Compatible services and codecs . 39
7.2.3.3 Specification. 39
7.2.4 PP Type 1b: "Improved" GAP narrowband handset . 39
7.2.4.1 Introduction . 39
7.2.4.2 Compatible services and codecs . 39
7.2.4.3 Specification. 39
7.2.5 PP Type 1c: HATS-tested "standard" narrowband handset . 39
7.2.5.1 Introduction . 39
7.2.5.2 Compatible services and codecs . 40
7.2.5.3 Specification. 40
7.2.6 PP Type 1d: HATS-tested "improved" narrowband handset . 40
7.2.6.1 Introduction . 40
7.2.6.2 Compatible services and codecs . 40
7.2.6.3 Specification. 40
7.2.7 PP Type 3a: HATS tested narrowband "standard" loudspeaking handsfree . 40
7.2.7.1 Introduction . 40
7.2.7.2 Compatible services and codecs . 41
7.2.7.3 Specification. 41
7.2.8 PP Type 3b: HATS tested narrowband "improved" loudspeaking handsfree . 41
7.2.8.1 Introduction . 41
7.2.8.2 Compatible services and codecs . 41
7.2.8.3 Specification. 41
7.2.9 PP Type 2a: P.311-tested wideband handset. 41
7.2.9.1 Introduction . 41
7.2.9.2 Compatible services and codecs . 41
7.2.9.3 Specification. 42
7.2.10 PP Type 2b: HATS-tested "standard" wideband handset or headset . 42
7.2.10.1 Introduction . 42
7.2.10.2 Compatible services and codecs . 42
7.2.10.3 Specification. 42
7.2.11 PP Type 2c: HATS tested "improved" wideband handset or headset . 42
7.2.11.1 Introduction . 42
7.2.11.2 Compatible services and codecs . 42
7.2.11.3 Specification. 43
7.2.12 PP Type 4a: HATS tested wideband "standard" loudspeaking handsfree . 43
7.2.12.1 Introduction . 43
7.2.12.2 Compatible services and codecs . 43
7.2.12.3 Specification. 43
7.2.13 PP Type 4b: HATS tested wideband "improved" loudspeaking and handsfree . 43
7.2.13.1 Introduction . 43
7.2.13.2 Compatible services and codecs . 44
7.2.13.3 Specification. 44
7.2.14 PP Type 5a: super-wideband 14 kHz handset . 44
7.2.14.1 Introduction . 44
7.2.14.2 Compatible services and codecs . 44
7.2.14.3 Specification. 44
7.2.15 PP Type 5b: super-wideband 14 kHz loudspeaking handsfree . 44
7.2.15.1 Introduction . 44
7.2.15.2 Compatible services and codecs . 44
7.2.15.3 Specification. 44
ETSI
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SIST EN 300 175-8 V2.2.1:2009
5 ETSI EN 300 175-8 V2.2.1 (2009-02)
7.2.16 PP Type 6: PPs with external 2 wire, 3,1 kHz telephony interface . 44
7.2.16.1 Introduction . 44
7.2.16.2 Compatible services and codecs . 44
7.2.16.3 Specification. 45
7.3 Audio transmission types applicable to Fixed Parts . 45
7.3.1 FP Type 0: Reference FP (ReFP) . 45
7.3.2 FP Type 1a: "classical" Fixed Part for ISDN Network . 46
7.3.2.1 Introduction . 46
7.3.2.2 Compatible services and codecs . 46
7.3.2.3 Specifications . 46
7.3.2.3.1 Transcoding and equalization . 46
7.3.2.3.2 PP type detection . 47
7.3.2.3.3 Activation of audio processing functions . 47
7.3.2.3.4 Transmission specification . 47
7.3.3 FP Type 1b: "new" Fixed Part for ISDN Network . 47
7.3.3.1 Introduction . 47
7.3.3.2 Compatible services and codecs . 47
7.3.3.3 Specification. 48
7.3.3.3.1 Transcoding and equalization . 48
7.3.3.3.2 PP type detection . 48
7.3.3.3.3 Activation of audio processing functions . 48
7.3.3.3.4 Transmission specification . 49
7.3.4 FP Type 2: FP with analog 2-wire interface, 3,1 kHz service . 49
7.3.4.1 Introduction . 49
7.3.4.2 Compatible services, physical interfaces and codecs . 49
7.3.4.3 Specification. 49
7.3.4.3.1 Transcoding, equalization and conversion . 49
7.3.4.3.2 PP type detection and activation of audio processing functions . 49
7.3.4.3.3 Transmission specification . 50
7.3.5 FP Type 3: VoIP narrowband Fixed Part . 50
7.3.5.1 Introduction . 50
7.3.5.2 Compatible services, physical interfaces and codecs . 50
7.3.5.3 Specification. 51
7.3.5.3.1 Transcoding and equalization . 51
7.3.5.3.2 PP type detection . 51
7.3.5.3.3 Activation of audio processing functions . 51
7.3.5.3.4 Transmission specification . 52
7.3.6 FP Type 4: ISDN wideband Fixed Part . 52
7.3.6.1 Introduction . 52
7.3.6.2 Compatible services and codecs . 52
7.3.6.3 Specification. 52
7.3.6.3.1 Transcoding and equalization . 52
7.3.6.3.2 PP type detection . 52
7.3.6.3.3 Activation of audio processing functions . 53
7.3.6.3.4 Transmission specification . 53
7.3.7 FP Type 5: VoIP wideband Fixed Part . 53
7.3.7.1 Introduction . 53
7.3.7.2 Compatible services, physical interfaces and codecs . 53
7.3.7.3 Specification. 54
7.3.7.3.1 Transcoding and equalization . 54
7.3.7.3.2 PP type detection . 54
7.3.7.3.3 Activation of audio processing functions . 54
7.3.7.3.4 Transmission specification . 55
7.3.8 FP Type 6a: FP
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