ETSI TBR 008 ed.1 (1994-09)

SLOVENSKI STANDARD
SIST TBR 008 E1:2004
01-oktober-2004

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Integrated Services Digital Network (ISDN); Telephony 3,1 kHz teleservice; Attachment

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

Copyright Notification: No part may be reproduced except as authorized by written permission. The copyright and the

Whilst every care has been taken in the preparation and publication of this document, errors in content,

typographical or otherwise, may occur. If you have comments concerning its accuracy, please write to

"ETSI Editing and Standards Approval Dept." at the address shown on the title page.

Foreword...........................................................................................................................................7

1 Scope ......................................................................................................................................9

2 Normative references ................................................................................................................9

3 Definitions and abbreviations.................................................................................................... 11

3.1 Definitions................................................................................................................. 11

3.2 Abbreviations............................................................................................................ 12

4 Safety requirements ................................................................................................................ 12

5 Electro-Magnetic Compatibility (EMC) requirements................................................................... 12

6 Access channel selection ......................................................................................................... 12

7 Call control functions................................................................................................................ 12

7.1 Outgoing calls........................................................................................................... 13

7.1.1 Overlap and en-bloc sending ................................................................... 13

7.1.2 Coding of Bearer Capability (BC) information element............................... 13

7.1.3 Coding of High Layer Compatibility (HLC) information element ................... 13

7.1.4 Coding of Low Layer Compatibility (LLC) information element.................... 14

7.2 Incoming calls........................................................................................................... 15

7.2.1 Compatibility checking ............................................................................ 15

7.2.1.4 Terminal selection........................................................... 16

7.2.2 Incoming call indication ........................................................................... 17

7.2.2.2 Terminal is busy ............................................................. 17

7.3 Information tones ...................................................................................................... 18

8 Transmission aspects .............................................................................................................. 18

8.1 General.................................................................................................................... 18

8.1.1 Encoding ............................................................................................... 18

8.1.2 Relative level.......................................................................................... 18

8.1.3 Volume control....................................................................................... 18

8.2 Speech performance characteristics (handset telephony 3,1 kHz)................................. 18

8.2.1 Sensitivity - frequency response .............................................................. 18

8.2.1.1 Sending ......................................................................... 18

8.2.1.2 Receiving ....................................................................... 19

8.2.2 Sending and Receiving Loudness Ratings (SLR and RLR) ......................... 19

8.2.2.1 Nominal values ............................................................... 19

8.2.2.2 Volume control ............................................................... 19

8.2.3 Sidetone................................................................................................ 19

8.2.3.1 Talker sidetone............................................................... 19

8.2.3.2 Listener sidetone............................................................ 20

8.2.4 Terminal Coupling Loss (TCL) ................................................................. 20

8.2.4.2 Stability loss...................................................................20

8.2.5 Distortion...............................................................................................20

8.2.5.1 Sending..........................................................................20

8.2.5.2 Receiving .......................................................................21

8.2.5.3 Sidetone ........................................................................22

8.2.6 Variation of gain with input level...............................................................22

8.2.6.1 Sending..........................................................................22

8.2.6.2 Receiving .......................................................................22

8.2.7 Out-of-band signals ................................................................................23

8.2.7.2 Spurious out-of-band (receiving).......................................23

8.2.8 Noise.....................................................................................................23

8.2.8.1 Sending..........................................................................23

8.2.8.2 Receiving .......................................................................23

8.2.9 Acoustic shock.......................................................................................24

8.2.10 Delay.....................................................................................................24

8.3 Loudspeaking and handsfree telephony.......................................................................24

9 Power feeding.........................................................................................................................24

9.1 General conditions.....................................................................................................24

9.2 Operation under restricted power conditions................................................................24

10 Physical modules.....................................................................................................................24

10.1 Handset....................................................................................................................24

10.2 Alerting module .........................................................................................................25

10.2.1 Sound pressure level ..............................................................................25

10.2.2 Alerting module control............................................................................25

10.2.2.1 Starting..........................................................................25

10.2.2.2 Stopping ........................................................................25

10.2.3 Adjustment of sound characteristics ......................................................... 26

11 Testing and approval methodology............................................................................................26

Annex A (normative): Test specifications ...................................................................................... 27

A.1 General conditions for testing...................................................................................................27

A.1.1 Environment for tests................................................................................................. 27

A.1.2 Power supply limitations.............................................................................................27

A.1.3 Test equipment interface............................................................................................27

A.1.4 Test equipment requirements .....................................................................................27

A.1.4.1 Electro-acoustic equipment .....................................................................27

A.1.4.2 Test equipment for digital telephone sets..................................................27

A.1.4.2.2 Direct digital processing approach....................................29

A.1.5 Alternative test methods ............................................................................................ 29

A.1.6 Accuracy of test equipment.......................................................................................29

A.1.7 Bandwidth.................................................................................................................29

A.2 Transmission requirements testing............................................................................................29

A.2.1 Sensitivity/frequency response ...................................................................................29

A.2.1.1 Sending ................................................................................................. 29

A.2.1.2 Receiving...............................................................................................30

A.2.2 Loudness ratings.......................................................................................................30

A.2.2.1 Sending Loudness Rating (SLR).............................................................. 30

A.2.2.2 Receiving Loudness Rating (RLR)............................................................ 30

A.2.3 Sidetone................................................................................................................... 31

A.2.3.1 Talker sidetone ...................................................................................... 31

A.2.3.2 Listener sidetone.................................................................................... 31

A.2.4 Terminal Coupling Loss.............................................................................................. 32

A.2.4.1 Weighted Terminal Coupling Loss (TCLw)................................................ 32

A.2.4.2 Stability loss .......................................................................................... 32

A.2.5 Distortion.................................................................................................................. 33

A.2.5.1 Sending................................................................................................. 33

A.2.5.1.1 Method 1 ....................................................................... 33

A.2.5.1.2 Method 2 ....................................................................... 33

A.2.5.2 Receiving............................................................................................... 34

A.2.5.2.1 Method 1 ....................................................................... 34

A.2.5.2.2 Method 2 ....................................................................... 34

A.2.5.3 Sidetone................................................................................................ 34

A.2.6 Variation of gain with input level.................................................................................. 34

A.2.6.1 Sending................................................................................................. 34

A.2.6.2 Receiving............................................................................................... 35

A.2.7 Out-of-band signals................................................................................................... 35

A.2.7.1 Discrimination against out-of-band input signal.......................................... 35

A.2.7.2 Spurious out-of-band signals ................................................................... 35

A.2.8 Noise ....................................................................................................................... 35

A.2.8.1 Sending................................................................................................. 35

A.2.8.2 Receiving............................................................................................... 35

A.2.8.3 Level of sampling frequency (receiving).................................................... 35

A.2.9 Delay ....................................................................................................................... 36

A.3 Audible alerting module............................................................................................................ 37

A.3.1 Sound pressure level measurement ............................................................................ 37

A.3.1.1 Measurement conditions ......................................................................... 37

A.3.1.2 Measurement method............................................................................. 37

Annex B (informative): Test Report Format .................................................................................... 38

B.1 Identification ........................................................................................................................... 38

B.1.1 Identification of the Document .................................................................................... 38

B.1.2 Identification of the testing laboratory ......................................................................... 38

B.1.3 Identification of the client ........................................................................................... 38

B.1.4 Identification of the test item ...................................................................................... 38

B.1.5 Use of subcontractors ............................................................................................... 39

B.2 Test conditions........................................................................................................................ 39

B.3 Test equipment ....................................................................................................................... 39

B.4 Test results............................................................................................................................. 39

B.4.1 Call control functions ................................................................................................. 39

B.4.2 Speech transmission characteristics ........................................................................... 39

B.4.3 Loudspeaking or handsfree telephony......................................................................... 39

B.4.4 Power feeding .......................................................................................................... 39

B.4.5 Physical modules ...................................................................................................... 39

B.5 Summary and conclusion.......................................................................................................... 40

Annex C (informative): Acoustic shock requirements........................................................................ 41

C.1 Continuous signal .................................................................................................................... 41

C.2 Peak signal............................................................................................................................. 41

Annex D (informative): Bibliography................................................................................................41

History .............................................................................................................................................42

This Technical Basis for Regulation (TBR) has been produced by the Terminal Equipment (TE) Technical

This TBR specifies the technical characteristics (electrical, logical and acoustic) to be provided by terminal

equipment for the telephony 3,1 kHz teleservice which is capable of connection to a coincident S and T

reference point at an interface to a public telecommunications network presented as an Integrated

The objective of this TBR is to ensure interworking between terminal equipment via the public network.

This TBR is applicable to simple 3,1 kHz telephony terminals as well as to the 3,1 kHz telephony function of

This TBR is applicable to terminal equipment of the functional group defined as Terminal Equipment Type 1

(TE1) in CCITT Recommendation I.411 [1] which supports the telephony 3,1 kHz teleservice.

This TBR applies to apparatus for household, office and similar general indoor use. It includes all the

functions necessary to provide real-time 2-way speech conversation. Where a function is indicated as

optional, it need not be provided, but, where such a function is provided, the terminal needs to conform to

A test is given for each requirement in this TBR including measurement methods. The terminal equipment

a) terminal equipment specially designed for the disabled (e.g., with amplification of received speech

NOTE 1: This TBR only applies to items of terminal equipment with an integral user-network

interface for ISDN basic access, and which have a handset. Terminal equipment with a

switching function which is not covered by the definition of TE1 is outside the scope of

NOTE 2: This TBR does not apply to terminal equipment which may be supplied in some

countries for connection to an interim ISDN corresponding to, but not wholly compatible

NOTE 3: Terminals that meet the requirements of this TBR will also be suitable for connection to

This TBR incorporates by dated or undated reference, provisions from other publications. These normative

references are cited at the appropriate places in the text and the publications are listed hereafter. For

dated references, subsequent amendments to or revisions of any of these publications apply to this TBR

only when incorporated in it by amendment or revision. For undated references the latest edition of the

NOTE 1: Reference [4] is intended to be replaced by CTR 3 "Integrated Services Digital

ISDN using ISDN basic access". When this takes place, all references in this TBR to

NOTE 2: ETS 300 104 [4] contains test descriptions and a requirements part that refers out to

NOTE 3: ETS 300 153 [4] contains test descriptions and a requirements part that refers out to

characteristics of local telephone systems to permit calculation of their loudness

[18] IEC 225: "Octave, half-octave and third-octave band filters intended for the

For the purposes of this TBR, the relevant definitions as given in ITU-T Recommendation P.10 [2] and

Acoustic Reference Level (ARL): The acoustic level which gives -10 dBm0 at the digital interface.

dB(A): Sound level relative to 20 mPa measured using the A-weighting defined in IEC 651 [6].

dBPa(A): Sound level relative to 1 Pa measured using the A-weighting defined in IEC 651 [6].

Designated terminal: The terminal which is permitted to draw power from power source 1 under

Restricted Power Condition: The condition indicated by the reversed polarity of the phantom voltage at

the coincident S and T reference point, as defined in ETS 300 153 (NET 3, Part 1) [4].

NOTE 1: For some networks restricted power condition will be the normal operating mode.

NOTE 2: Work is currently being undertaken by ETSI to analyse the mouth-to-ear characteristics

Terminal Coupling Loss (TCL): The frequency dependent coupling loss between the receiving port and

- electrical coupling due to crosstalk in the handset cord or within the electrical circuits;

NOTE 3: The receiving port and the sending port of a digital voice terminal is a 0 dBr point.

Weighted terminal coupling loss (TCLw): The weighted terminal coupling loss using the weighting of

3,1 kHz telephony terminal: A terminal that supports the telephony 3,1 kHz teleservice as described in

For the purposes of this TBR, the relevant abbreviations given in ITU-T Recommendation P.10 [2] and

NOTE: Safety requirements are imposed under the Low Voltage Directive (73/23/EEC) and

NOTE: EMC requirements are imposed under the EMC Directive (89/336/EEC). Requirements

Access through any B-channel shall be possible. Channel selection shall be in accordance with ETS

The functional characteristics of the terminal shall be independent of the B-channel selected.

Compliance shall be tested in accordance with ETS 300 104 (NET 3, Part 2) [4] by random choice of the