Digital Enhanced Cordless Telecommunications (DECT) - Common Interface (CI) - Part 8: Speech and audio coding and transmission

The present document is one of the parts of the specification of the Digital Enhanced Cordless Telecommunications (DECT) Common Interface (CI) [1] to [7]. This part of the DECT CI specifies the speech and audio coding and transmission requirements. In order to ensure satisfactory interworking of different portable and fixed units, it is necessary to specify the transmission performance of the analog information over the digital link. This requires not only use of a common speech algorithm, but also standardization of frequency responses, reference speech levels (or loudness) at the air interface and various other parameters. The present document applies to DECT equipment which includes all the necessary functions to provide real-time two-way speech conversation. Several speech services are defined in the present document, including conventional 3,1 kHz telephony, wideband 7 kHz voice transmission and super-wideband 14 kHz service. DECT Fixed part providing such services may be connected to the public circuit switched (PSTN/ISDN) network, to private networks or to the Internet. Tethered fixed point local loop applications are not required to comply with the requirements of the present document. For the DECT systems which connect to the Public Switched Telephone Network (PSTN) via an analog interface, the additional requirements, which are implemented in the FP, have as much as possible been aligned with TBR 038 [29]. A summary of the control and the use of the DECT echo control functions, to guide on need for options to manufacturers and installers, is found in annex A. Information concerning test methods can be found in EN 300 176-1 [9] and EN 300 176-2 [10] (previously covered by TBR 010 [i.5]). The test methods take into account that DECT is a digital system. The present document includes New Generation DECT, a further development of the DECT standard introducing
wideband speech, improved data services, new slot types and other technical enhancements.

Digitalne izboljšane brezvrvične telekomunikacije (DECT) - Skupni vmesnik (CI) - 8. del: Kodiranje in prenos govora in zvoka

Ta dokument je eden od delov specifikacije skupnega vmesnika (CI) za digitalne izboljšane brezvrvične telekomunikacije (DECT) [1] do [7]. Ta del DECT CI določa zahteve za kodiranje in prenos govora ter zvoka. Za ustrezno medsebojno delovanje različnih prenosnih in fiksnih enot je treba določiti zmogljivost prenosa analognih informacij prek digitalne povezave. Pri tem se poleg uporabe skupnega govornega algoritma zahtevajo tudi standardizacija frekvenčnih odzivov, ravni referenčnega govora (ali glasnost) pri radijskem vmesniku in drugi različni parametri. Ta dokument velja za opremo DECT, ki vključuje vse potrebne funkcije za zagotavljanje dvosmernih govorjenih pogovorov v realnem času. V tem dokumentu je določenih več govornih storitev, vključno s standardno telefonsko storitvijo na frekvenci 3,1 kHz, širokopasovnim prenosom glasu na frekvenci 7 kHz in super širokopasovno storitvijo na frekvenci 14 kHz. Fiksni del DECT, ki zagotavlja takšne storitve, je lahko povezan z omrežjem PSTN/ISDN, zasebnimi omrežji ali internetom. Ni treba, da za uporabo lokalnih zank fiksnih točk v skupni rabi veljajo zahteve iz tega dokumenta. Za sisteme DECT, ki so v omrežje PSTN povezani prek analognega vmesnika, so bile dodatne zahteve, uvedene v FP, v največji možni meri usklajene s TBR 038 [29]. Povzetek nadzora in uporabe funkcij nadzora odmeva DECT ter smernice z opisom možnosti za proizvajalce in montažerje so na voljo v Dodatku A. Informacije o preizkusnih metodah so na voljo v standardih EN 300 176-1 [9] in EN 300 176-2 [10] (v preteklosti so bile zajete v TBR 010 [i.5]). Preizkusne metode upoštevajo, da je DECT digitalni sistem. Ta dokument vključuje DECT nove generacije, tj. dodatno razvit standard DECT, ki predstavlja širokopasovni govor, izboljšane podatkovne storitve, nove vrste rež in druge tehnične izboljšave.

General Information

Status
Published
Public Enquiry End Date
31-Jul-2013
Publication Date
23-Sep-2013
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
02-Sep-2013
Due Date
07-Nov-2013
Completion Date
24-Sep-2013

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Digital Enhanced Cordless Telecommunications (DECT) - Common Interface (CI) - Part 8: Speech and audio coding and transmission33.070.30'(&7Digital Enhanced Cordless Telecommunications (DECT)ICS:Ta slovenski standard je istoveten z:EN 300 175-8 Version 2.5.1SIST EN 300 175-8 V2.5.1:2013en01-oktober-2013SIST EN 300 175-8 V2.5.1:2013SLOVENSKI
STANDARD



SIST EN 300 175-8 V2.5.1:2013



ETSI EN 300 175-8 V2.5.1 (2013-08) Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI); Part 8: Speech and audio coding and transmission
European Standard SIST EN 300 175-8 V2.5.1:2013



ETSI ETSI EN 300 175-8 V2.5.1 (2013-08) 2
Reference REN/DECT-000268-8 Keywords 7 kHz, audio, broadband, codec, DECT, handsfree, IMT-2000, loudspeaking, mobility, narrowband, quality, radio, speech, TDD, TDMA, telephony, terminal ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE
Tel.: +33 4 92 94 42 00
Fax: +33 4 93 65 47 16
Siret N° 348 623 562 00017 - NAF 742 C Association à but non lucratif enregistrée à la Sous-Préfecture de Grasse (06) N° 7803/88
Important notice Individual copies of the present document can be downloaded from: http://www.etsi.org The present document may be made available in more than one electronic version or in print. In any case of existing or perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF). In case of dispute, the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive within ETSI Secretariat. Users of the present document should be aware that the document may be subject to revision or change of status. Information on the current status of this and other ETSI documents is available at http://portal.etsi.org/tb/status/status.asp If you find errors in the present document, please send your comment to one of the following services: http://portal.etsi.org/chaircor/ETSI_support.asp Copyright Notification No part may be reproduced except as authorized by written permission. The copyright and the foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 2013. All rights reserved.
DECTTM, PLUGTESTSTM, UMTSTM and the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members. 3GPPTM and LTE™ are Trade Marks of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. GSM® and the GSM logo are Trade Marks registered and owned by the GSM Association. SIST EN 300 175-8 V2.5.1:2013



ETSI ETSI EN 300 175-8 V2.5.1 (2013-08) 3 Contents Intellectual Property Rights . 11 Foreword . 11 1 Scope . 12 2 References . 12 2.1 Normative references . 12 2.2 Informative references . 14 3 Definitions, symbols and abbreviations . 15 3.1 Definitions . 15 3.2 Symbols and abbreviations . 16 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 . 21 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 . 22 5.1.3 Characteristics of G.726 ADPCM codec . 22 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 . 23 5.2.4 Automatic detection of FAX/modem tone and switch to G.711 . 23 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) . 24 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) . 25 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 . 26 5.5.3 32 kbit/s, MPEG-4 ER AAC-LD codec . 27 5.6 Other codings . 27 6 Transmission aspects . 27 6.1 Relative level . 27 6.2 Acoustic reference level . 27 6.3 Volume control . 27 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 SIST EN 300 175-8 V2.5.1:2013



ETSI ETSI EN 300 175-8 V2.5.1 (2013-08) 4 7.1.3 List of Audio types . 29 7.1.4 Audio types for Portable Parts . 29 7.1.5 Audio types for Fixed Parts . 30 7.1.6 Complete DECT system . 30 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 SIST EN 300 175-8 V2.5.1:2013



ETSI ETSI EN 300 175-8 V2.5.1 (2013-08) 5 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 handling an Internal call inside a DECT FP (any service) . 55 7.3.8.1 Introduction . 55 7.3.8.2 Compatible services, physical interfaces and codecs . 55 7.3.8.3 Specification. 55 7.3.9 FP Type 6b: FP handling an n-party conference inside a DECT FP (any service) . 55 7.3.9.1 Introduction . 55 7.3.9.2 Compatible services, physical interfaces and codecs .
...

Draft ETSI EN 300 175-8 V2.5.0 (2013-04)






European Standard
Digital Enhanced Cordless Telecommunications (DECT);
Common Interface (CI);
Part 8: Speech and audio coding and transmission

---------------------- Page: 1 ----------------------
2 Draft ETSI EN 300 175-8 V2.5.0 (2013-04)



Reference
REN/DECT-000268-8
Keywords
7 kHz, audio, broadband, codec, DECT,
handsfree, IMT-2000, loudspeaking, mobility,
narrowband, quality, radio, speech, TDD, TDMA,
telephony, terminal
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: +33 4 92 94 42 00  Fax: +33 4 93 65 47 16

Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88

Important notice
Individual copies of the present document can be downloaded from:
http://www.etsi.org
The present document may be made available in more than one electronic version or in print. In any case of existing or
perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF).
In case of dispute, the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive
within ETSI Secretariat.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
http://portal.etsi.org/tb/status/status.asp
If you find errors in the present document, please send your comment to one of the following services:
http://portal.etsi.org/chaircor/ETSI_support.asp
Copyright Notification
No part may be reproduced except as authorized by written permission.
The copyright and the foregoing restriction extend to reproduction in all media.

© European Telecommunications Standards Institute 2013.
All rights reserved.

TM TM TM
DECT , PLUGTESTS , UMTS and the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members.
TM
3GPP and LTE™ are Trade Marks of ETSI registered for the benefit of its Members and
of the 3GPP Organizational Partners.
GSM® and the GSM logo are Trade Marks registered and owned by the GSM Association.
ETSI

---------------------- Page: 2 ----------------------
3 Draft ETSI EN 300 175-8 V2.5.0 (2013-04)
Contents
Intellectual Property Rights . 11
Foreword . 11
1 Scope . 12
2 References . 12
2.1 Normative references . 12
2.2 Informative references . 14
3 Definitions, symbols and abbreviations . 15
3.1 Definitions . 15
3.2 Symbols and abbreviations . 16
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 . 21
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 . 22
5.1.3 Characteristics of G.726 ADPCM codec . 22
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 . 23
5.2.4 Automatic detection of FAX/modem tone and switch to G.711 . 23
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) . 24
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) . 25
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 . 26
5.5.3 32 kbit/s, MPEG-4 ER AAC-LD codec . 27
5.6 Other codings . 27
6 Transmission aspects . 27
6.1 Relative level . 27
6.2 Acoustic reference level . 27
6.3 Volume control . 27
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

---------------------- Page: 3 ----------------------
4 Draft ETSI EN 300 175-8 V2.5.0 (2013-04)
7.1.3 List of Audio types . 29
7.1.4 Audio types for Portable Parts . 29
7.1.5 Audio types for Fixed Parts . 30
7.1.6 Complete DECT system . 30
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

---------------------- Page: 4 ----------------------
5 Draft ETSI EN 300 175-8 V2.5.0 (2013-04)
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 handling an Internal call inside a DECT FP (any service) . 55
7.3.8.1 Introduction . 55
7.3.8.2 Compatible services, physical interfaces and codecs . 55
7.3.8.3 Specification. 55
7.3.9 FP Type 6b: FP handling an n-party conference inside a DECT FP (any service) . 55
7.3.9.1 Introduction . 55
7.3.9.2 Compatible services, physical interfaces and codecs . 56
7.3.9.3 Specification for the conference bridge.
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