Accessibility requirements for ICT products and services

REN/HF-00301549v321

Zahteve za dostopnost izdelkov in storitev IKT

General Information

Status
Not Published
Technical Committee
Current Stage
12 - Delivery to the EC
Due Date
09-Apr-2021
Completion Date
07-May-2021

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EN 301 549 V3.2.1 (2021-03)
HARMONISED EUROPEAN STANDARD
Accessibility requirements for ICT products and services
---------------------- Page: 1 ----------------------
EN 301 549 V3.2.1 (2021-03)
Reference
REN/HF-00301549v321
Keywords
accessibility, HF, ICT, procurement
CEN CENELEC ETSI
Rue de la science, 23 Rue de la science, 23 650 Route des Lucioles
B-1040 Brussels B-1040 Brussels F-06921 Sophia Antipolis Cedex -
- BELGIUM - BELGIUM FRANCE
Tel: + 32 2 550 08 11 Tel.: +32 2 519 68 71 Tel.: +33 4 92 94 42 00
Fax: + 32 2 550 08 19 Fax: +32 2 519 69 19 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:
ETSI Search & Browse Standards

The present document may be made available in electronic versions and/or in print. The content of any electronic and/or

print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any

existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI

deliverable is the one made publicly available in PDF format at ETSI Deliverables.

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

ETSI deliverable status

If you find errors in the present document, please send your comment to one of the following services:

ETSI Committee Support Staff
Copyright Notification

No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm

except as authorized by written permission of ETSI.

The content of the PDF version shall not be modified without the written authorization of ETSI.

The copyright and the foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 2021.
© Comité Européen de Normalisation 2021.
© Comité Européen de Normalisation Electrotechnique 2021.
All rights reserved.

DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its Members.

3GPP™ and LTE™ are trademarks of ETSI registered for the benefit of its Members and

of the 3GPP Organizational Partners.

oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and

of the oneM2M Partners.
GSM and the GSM logo are trademarks registered and owned by the GSM Association.
ETSI CEN CENELEC
---------------------- Page: 2 ----------------------
EN 301 549 V3.2.1 (2021-03)
Contents

Contents .............................................................................................................................................................. 3

Intellectual Property Rights ................................................................................................................................ 8

Foreword............................................................................................................................................................. 8

Modal verbs terminology ................................................................................................................................... 9

Introduction ........................................................................................................................................................ 9

1 Scope ...................................................................................................................................................... 11

2 References .............................................................................................................................................. 11

2.1 Normative references ....................................................................................................................................... 11

2.2 Informative references ..................................................................................................................................... 12

3 Definition of terms, symbols and abbreviations ..................................................................................... 15

3.1 Terms ............................................................................................................................................................... 15

3.2 Symbols ........................................................................................................................................................... 19

3.3 Abbreviations ................................................................................................................................................... 19

4 Functional performance .......................................................................................................................... 20

4.1 Meeting functional performance statements .................................................................................................... 20

4.2 Functional performance statements ................................................................................................................. 20

4.2.1 Usage without vision .................................................................................................................................. 20

4.2.2 Usage with limited vision ........................................................................................................................... 20

4.2.3 Usage without perception of colour ........................................................................................................... 21

4.2.4 Usage without hearing ................................................................................................................................ 21

4.2.5 Usage with limited hearing ........................................................................................................................ 21

4.2.6 Usage with no or limited vocal capability .................................................................................................. 21

4.2.7 Usage with limited manipulation or strength ............................................................................................. 21

4.2.8 Usage with limited reach ............................................................................................................................ 22

4.2.9 Minimize photosensitive seizure triggers ................................................................................................... 22

4.2.10 Usage with limited cognition, language or learning ................................................................................... 22

4.2.11 Privacy ....................................................................................................................................................... 22

5 Generic requirements ............................................................................................................................. 23

5.1 Closed functionality ......................................................................................................................................... 23

5.1.1 Introduction (informative) .......................................................................................................................... 23

5.1.2 General ....................................................................................................................................................... 23

5.1.3 Non-visual access ....................................................................................................................................... 23

5.1.4 Functionality closed to text enlargement .................................................................................................... 26

5.1.5 Visual output for auditory information....................................................................................................... 27

5.1.6 Operation without keyboard interface ........................................................................................................ 27

5.1.7 Access without speech ............................................................................................................................... 28

5.2 Activation of accessibility features .................................................................................................................. 28

5.3 Biometrics ........................................................................................................................................................ 28

5.4 Preservation of accessibility information during conversion ........................................................................... 28

5.5 Operable parts .................................................................................................................................................. 28

5.5.1 Means of operation ..................................................................................................................................... 28

5.5.2 Operable parts discernibility ...................................................................................................................... 28

5.6 Locking or toggle controls ............................................................................................................................... 29

5.6.1 Tactile or auditory status ............................................................................................................................ 29

5.6.2 Visual status ............................................................................................................................................... 29

5.7 Key repeat ........................................................................................................................................................ 29

5.8 Double-strike key acceptance .......................................................................................................................... 29

5.9 Simultaneous user actions ................................................................................................................................ 29

6 ICT with two-way voice communication ............................................................................................... 30

6.1 Audio bandwidth for speech ............................................................................................................................ 30

ETSI CEN CENELEC
---------------------- Page: 3 ----------------------
EN 301 549 V3.2.1 (2021-03)

6.2 Real-Time Text (RTT) functionality ............................................................................................................... 30

6.2.1 RTT provision ............................................................................................................................................ 30

6.2.2 Display of RTT .......................................................................................................................................... 31

6.2.3 Interoperability ........................................................................................................................................... 31

6.2.4 RTT responsiveness ................................................................................................................................... 32

6.3 Caller ID .......................................................................................................................................................... 32

6.4 Alternatives to voice-based services ................................................................................................................ 32

6.5 Video communication ...................................................................................................................................... 33

6.5.1 General (informative) ................................................................................................................................. 33

6.5.2 Resolution .................................................................................................................................................. 33

6.5.3 Frame rate .................................................................................................................................................. 33

6.5.4 Synchronization between audio and video ................................................................................................. 33

6.5.5 Visual indicator of audio with video .......................................................................................................... 33

6.5.6 Speaker identification with video (sign language) communication............................................................ 34

6.6 Alternatives to video-based services ................................................................................................................ 34

7 ICT with video capabilities .................................................................................................................... 35

7.1 Caption processing technology ........................................................................................................................ 35

7.1.1 Captioning playback ................................................................................................................................... 35

7.1.2 Captioning synchronization ........................................................................................................................ 35

7.1.3 Preservation of captioning .......................................................................................................................... 35

7.1.4 Captions characteristics .............................................................................................................................. 35

7.1.5 Spoken subtitles ......................................................................................................................................... 35

7.2 Audio description technology .......................................................................................................................... 36

7.2.1 Audio description playback ........................................................................................................................ 36

7.2.2 Audio description synchronization ............................................................................................................. 36

7.2.3 Preservation of audio description ............................................................................................................... 36

7.3 User controls for captions and audio description ............................................................................................. 36

8 Hardware ................................................................................................................................................ 37

8.1 General ............................................................................................................................................................. 37

8.1.1 Generic requirements ................................................................................................................................. 37

8.1.2 Standard connections.................................................................................................................................. 37

8.1.3 Colour......................................................................................................................................................... 37

8.2 Hardware products with speech output ............................................................................................................ 37

8.2.1 Speech volume gain ................................................................................................................................... 37

8.2.2 Magnetic coupling ...................................................................................................................................... 37

8.3 Stationary ICT ................................................................................................................................................. 38

8.3.0 General ....................................................................................................................................................... 38

8.3.1 Forward or side reach ................................................................................................................................. 38

8.3.2 Forward reach............................................................................................................................................. 38

8.3.3 Side reach ................................................................................................................................................... 41

8.3.4 Clear floor or ground space ........................................................................................................................ 42

8.3.5 Visibility ..................................................................................................................................................... 43

8.3.6 Installation instructions .............................................................................................................................. 43

8.4 Mechanically operable parts ............................................................................................................................ 44

8.4.1 Numeric keys ............................................................................................................................................. 44

8.4.2 Operation of mechanical parts .................................................................................................................... 44

8.4.3 Keys, tickets and fare cards ........................................................................................................................ 44

8.5 Tactile indication of speech mode ................................................................................................................... 44

9 Web ........................................................................................................................................................ 45

9.0 General (informative) ...................................................................................................................................... 45

9.1 Perceivable ....................................................................................................................................................... 45

9.1.1 Text alternatives ......................................................................................................................................... 45

9.1.2 Time-based media ...................................................................................................................................... 45

9.1.3 Adaptable ................................................................................................................................................... 46

9.1.4 Distinguishable ........................................................................................................................................... 46

9.2 Operable ........................................................................................................................................................... 47

9.2.1 Keyboard accessible ................................................................................................................................... 47

9.2.2 Enough time ............................................................................................................................................... 48

ETSI CEN CENELEC
---------------------- Page: 4 ----------------------
EN 301 549 V3.2.1 (2021-03)

9.2.3 Seizures and physical reactions .................................................................................................................. 48

9.2.4 Navigable ................................................................................................................................................... 48

9.2.5 Input modalities .......................................................................................................................................... 49

9.3 Understandable ................................................................................................................................................ 49

9.3.1 Readable ..................................................................................................................................................... 49

9.3.2 Predictable .................................................................................................................................................. 49

9.3.3 Input assistance .......................................................................................................................................... 49

9.4 Robust .............................................................................................................................................................. 50

9.4.1 Compatible ................................................................................................................................................. 50

9.5 WCAG 2.1 AAA Success Criteria ................................................................................................................... 50

9.6 WCAG conformance requirements .................................................................................................................. 51

10 Non-web documents ............................................................................................................................... 52

10.0 General (informative) ...................................................................................................................................... 52

10.1 Perceivable ....................................................................................................................................................... 52

10.1.1 Text alternatives ......................................................................................................................................... 52

10.1.2 Time-based media ...................................................................................................................................... 53

10.1.3 Adaptable ................................................................................................................................................... 54

10.1.4 Distinguishable ........................................................................................................................................... 54

10.2 Operable ........................................................................................................................................................... 56

10.2.1 Keyboard accessible ................................................................................................................................... 56

10.2.2 Enough time ............................................................................................................................................... 57

10.2.3 Seizures and physical reactions .................................................................................................................. 58

10.2.4 Navigable ................................................................................................................................................... 58

10.2.5 Input modalities .......................................................................................................................................... 59

10.3 Understandable ................................................................................................................................................ 60

10.3.1 Readable ..................................................................................................................................................... 60

10.3.2 Predictable .................................................................................................................................................. 60

10.3.3 Input assistance .......................................................................................................................................... 61

10.4 Robust .............................................................................................................................................................. 62

10.4.1 Compatible ................................................................................................................................................. 62

10.5 Caption positioning .......................................................................................................................................... 62

10.6 Audio description timing ................................................................................................................................. 63

11 Software ................................................................................................................................................. 64

11.0 General (informative) ...................................................................................................................................... 64

11.1 Perceivable ....................................................................................................................................................... 65

11.1.1 Text alternatives ......................................................................................................................................... 65

11.1.2 Time-based media ...................................................................................................................................... 65

11.1.3 Adaptable ................................................................................................................................................... 67

11.1.4 Distinguishable ........................................................................................................................................... 68

11.2 Operable ........................................................................................................................................................... 70

11.2.1 Keyboard accessible ................................................................................................................................... 70

11.2.2 Enough time ............................................................................................................................................... 71

11.2.3 Seizures and physical reactions .................................................................................................................. 72

11.2.4 Navigable ................................................................................................................................................... 72

11.2.5 Input modalities .......................................................................................................................................... 73

11.3 Understandable ................................................................................................................................................ 74

11.3.1 Readable ..................................................................................................................................................... 74

11.3.2 Predictable .................................................................................................................................................. 75

11.3.3 Input assistance .......................................................................................................................................... 76

11.4 Robust .............................................................................................................................................................. 76

11.4.1 Compatible ................................................................................................................................................. 76

11.5 Interoperability with assistive technology ....................................................................................................... 78

11.5.1 Closed functionality ................................................................................................................................... 78

11.5.2 Accessibility services ................................................................................................................................. 78

11.6 Documented accessibility usage ...................................................................................................................... 81

11.6.1 User control of accessibility features ......................................................................................................... 81

11.6.2 No disruption of accessibility features ....................................................................................................... 82

11.7 User preferences ..............................................................................................................

...

SLOVENSKI STANDARD
SIST EN 301 549 V3.2.1:2021
01-maj-2021
Zahteve za dostopnost izdelkov in storitev IKT
Accessibility requirements for ICT products and services
Ta slovenski standard je istoveten z: ETSI EN 301 549 V3.2.1 (2021-03)
ICS:
35.020 Informacijska tehnika in Information technology (IT) in
tehnologija na splošno general
SIST EN 301 549 V3.2.1:2021 en

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

---------------------- Page: 1 ----------------------
SIST EN 301 549 V3.2.1:2021
---------------------- Page: 2 ----------------------
SIST EN 301 549 V3.2.1:2021
EN 301 549 V3.2.1 (2021-03)
HARMONISED EUROPEAN STANDARD
Accessibility requirements for ICT products and services
---------------------- Page: 3 ----------------------
SIST EN 301 549 V3.2.1:2021
EN 301 549 V3.2.1 (2021-03)
Reference
REN/HF-00301549v321
Keywords
accessibility, HF, ICT, procurement
CEN CENELEC ETSI
Rue de la science, 23 Rue de la science, 23 650 Route des Lucioles
B-1040 Brussels B-1040 Brussels F-06921 Sophia Antipolis Cedex -
- BELGIUM - BELGIUM FRANCE
Tel: + 32 2 550 08 11 Tel.: +32 2 519 68 71 Tel.: +33 4 92 94 42 00
Fax: + 32 2 550 08 19 Fax: +32 2 519 69 19 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:
ETSI Search & Browse Standards

The present document may be made available in electronic versions and/or in print. The content of any electronic and/or

print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any

existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI

deliverable is the one made publicly available in PDF format at ETSI Deliverables.

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

ETSI deliverable status

If you find errors in the present document, please send your comment to one of the following services:

ETSI Committee Support Staff
Copyright Notification

No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm

except as authorized by written permission of ETSI.

The content of the PDF version shall not be modified without the written authorization of ETSI.

The copyright and the foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 2021.
© Comité Européen de Normalisation 2021.
© Comité Européen de Normalisation Electrotechnique 2021.
All rights reserved.

DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its Members.

3GPP™ and LTE™ are trademarks of ETSI registered for the benefit of its Members and

of the 3GPP Organizational Partners.

oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and

of the oneM2M Partners.
GSM and the GSM logo are trademarks registered and owned by the GSM Association.
ETSI CEN CENELEC
---------------------- Page: 4 ----------------------
SIST EN 301 549 V3.2.1:2021
EN 301 549 V3.2.1 (2021-03)
Contents

Contents .............................................................................................................................................................. 3

Intellectual Property Rights ................................................................................................................................ 8

Foreword............................................................................................................................................................. 8

Modal verbs terminology ................................................................................................................................... 9

Introduction ........................................................................................................................................................ 9

1 Scope ...................................................................................................................................................... 11

2 References .............................................................................................................................................. 11

2.1 Normative references ....................................................................................................................................... 11

2.2 Informative references ..................................................................................................................................... 12

3 Definition of terms, symbols and abbreviations ..................................................................................... 15

3.1 Terms ............................................................................................................................................................... 15

3.2 Symbols ........................................................................................................................................................... 19

3.3 Abbreviations ................................................................................................................................................... 19

4 Functional performance .......................................................................................................................... 20

4.1 Meeting functional performance statements .................................................................................................... 20

4.2 Functional performance statements ................................................................................................................. 20

4.2.1 Usage without vision .................................................................................................................................. 20

4.2.2 Usage with limited vision ........................................................................................................................... 20

4.2.3 Usage without perception of colour ........................................................................................................... 21

4.2.4 Usage without hearing ................................................................................................................................ 21

4.2.5 Usage with limited hearing ........................................................................................................................ 21

4.2.6 Usage with no or limited vocal capability .................................................................................................. 21

4.2.7 Usage with limited manipulation or strength ............................................................................................. 21

4.2.8 Usage with limited reach ............................................................................................................................ 22

4.2.9 Minimize photosensitive seizure triggers ................................................................................................... 22

4.2.10 Usage with limited cognition, language or learning ................................................................................... 22

4.2.11 Privacy ....................................................................................................................................................... 22

5 Generic requirements ............................................................................................................................. 23

5.1 Closed functionality ......................................................................................................................................... 23

5.1.1 Introduction (informative) .......................................................................................................................... 23

5.1.2 General ....................................................................................................................................................... 23

5.1.3 Non-visual access ....................................................................................................................................... 23

5.1.4 Functionality closed to text enlargement .................................................................................................... 26

5.1.5 Visual output for auditory information....................................................................................................... 27

5.1.6 Operation without keyboard interface ........................................................................................................ 27

5.1.7 Access without speech ............................................................................................................................... 28

5.2 Activation of accessibility features .................................................................................................................. 28

5.3 Biometrics ........................................................................................................................................................ 28

5.4 Preservation of accessibility information during conversion ........................................................................... 28

5.5 Operable parts .................................................................................................................................................. 28

5.5.1 Means of operation ..................................................................................................................................... 28

5.5.2 Operable parts discernibility ...................................................................................................................... 28

5.6 Locking or toggle controls ............................................................................................................................... 29

5.6.1 Tactile or auditory status ............................................................................................................................ 29

5.6.2 Visual status ............................................................................................................................................... 29

5.7 Key repeat ........................................................................................................................................................ 29

5.8 Double-strike key acceptance .......................................................................................................................... 29

5.9 Simultaneous user actions ................................................................................................................................ 29

6 ICT with two-way voice communication ............................................................................................... 30

6.1 Audio bandwidth for speech ............................................................................................................................ 30

ETSI CEN CENELEC
---------------------- Page: 5 ----------------------
SIST EN 301 549 V3.2.1:2021
EN 301 549 V3.2.1 (2021-03)

6.2 Real-Time Text (RTT) functionality ............................................................................................................... 30

6.2.1 RTT provision ............................................................................................................................................ 30

6.2.2 Display of RTT .......................................................................................................................................... 31

6.2.3 Interoperability ........................................................................................................................................... 31

6.2.4 RTT responsiveness ................................................................................................................................... 32

6.3 Caller ID .......................................................................................................................................................... 32

6.4 Alternatives to voice-based services ................................................................................................................ 32

6.5 Video communication ...................................................................................................................................... 33

6.5.1 General (informative) ................................................................................................................................. 33

6.5.2 Resolution .................................................................................................................................................. 33

6.5.3 Frame rate .................................................................................................................................................. 33

6.5.4 Synchronization between audio and video ................................................................................................. 33

6.5.5 Visual indicator of audio with video .......................................................................................................... 33

6.5.6 Speaker identification with video (sign language) communication............................................................ 34

6.6 Alternatives to video-based services ................................................................................................................ 34

7 ICT with video capabilities .................................................................................................................... 35

7.1 Caption processing technology ........................................................................................................................ 35

7.1.1 Captioning playback ................................................................................................................................... 35

7.1.2 Captioning synchronization ........................................................................................................................ 35

7.1.3 Preservation of captioning .......................................................................................................................... 35

7.1.4 Captions characteristics .............................................................................................................................. 35

7.1.5 Spoken subtitles ......................................................................................................................................... 35

7.2 Audio description technology .......................................................................................................................... 36

7.2.1 Audio description playback ........................................................................................................................ 36

7.2.2 Audio description synchronization ............................................................................................................. 36

7.2.3 Preservation of audio description ............................................................................................................... 36

7.3 User controls for captions and audio description ............................................................................................. 36

8 Hardware ................................................................................................................................................ 37

8.1 General ............................................................................................................................................................. 37

8.1.1 Generic requirements ................................................................................................................................. 37

8.1.2 Standard connections.................................................................................................................................. 37

8.1.3 Colour......................................................................................................................................................... 37

8.2 Hardware products with speech output ............................................................................................................ 37

8.2.1 Speech volume gain ................................................................................................................................... 37

8.2.2 Magnetic coupling ...................................................................................................................................... 37

8.3 Stationary ICT ................................................................................................................................................. 38

8.3.0 General ....................................................................................................................................................... 38

8.3.1 Forward or side reach ................................................................................................................................. 38

8.3.2 Forward reach............................................................................................................................................. 38

8.3.3 Side reach ................................................................................................................................................... 41

8.3.4 Clear floor or ground space ........................................................................................................................ 42

8.3.5 Visibility ..................................................................................................................................................... 43

8.3.6 Installation instructions .............................................................................................................................. 43

8.4 Mechanically operable parts ............................................................................................................................ 44

8.4.1 Numeric keys ............................................................................................................................................. 44

8.4.2 Operation of mechanical parts .................................................................................................................... 44

8.4.3 Keys, tickets and fare cards ........................................................................................................................ 44

8.5 Tactile indication of speech mode ................................................................................................................... 44

9 Web ........................................................................................................................................................ 45

9.0 General (informative) ...................................................................................................................................... 45

9.1 Perceivable ....................................................................................................................................................... 45

9.1.1 Text alternatives ......................................................................................................................................... 45

9.1.2 Time-based media ...................................................................................................................................... 45

9.1.3 Adaptable ................................................................................................................................................... 46

9.1.4 Distinguishable ........................................................................................................................................... 46

9.2 Operable ........................................................................................................................................................... 47

9.2.1 Keyboard accessible ................................................................................................................................... 47

9.2.2 Enough time ............................................................................................................................................... 48

ETSI CEN CENELEC
---------------------- Page: 6 ----------------------
SIST EN 301 549 V3.2.1:2021
EN 301 549 V3.2.1 (2021-03)

9.2.3 Seizures and physical reactions .................................................................................................................. 48

9.2.4 Navigable ................................................................................................................................................... 48

9.2.5 Input modalities .......................................................................................................................................... 49

9.3 Understandable ................................................................................................................................................ 49

9.3.1 Readable ..................................................................................................................................................... 49

9.3.2 Predictable .................................................................................................................................................. 49

9.3.3 Input assistance .......................................................................................................................................... 49

9.4 Robust .............................................................................................................................................................. 50

9.4.1 Compatible ................................................................................................................................................. 50

9.5 WCAG 2.1 AAA Success Criteria ................................................................................................................... 50

9.6 WCAG conformance requirements .................................................................................................................. 51

10 Non-web documents ............................................................................................................................... 52

10.0 General (informative) ...................................................................................................................................... 52

10.1 Perceivable ....................................................................................................................................................... 52

10.1.1 Text alternatives ......................................................................................................................................... 52

10.1.2 Time-based media ...................................................................................................................................... 53

10.1.3 Adaptable ................................................................................................................................................... 54

10.1.4 Distinguishable ........................................................................................................................................... 54

10.2 Operable ........................................................................................................................................................... 56

10.2.1 Keyboard accessible ................................................................................................................................... 56

10.2.2 Enough time ............................................................................................................................................... 57

10.2.3 Seizures and physical reactions .................................................................................................................. 58

10.2.4 Navigable ................................................................................................................................................... 58

10.2.5 Input modalities .......................................................................................................................................... 59

10.3 Understandable ................................................................................................................................................ 60

10.3.1 Readable ..................................................................................................................................................... 60

10.3.2 Predictable .................................................................................................................................................. 60

10.3.3 Input assistance .......................................................................................................................................... 61

10.4 Robust .............................................................................................................................................................. 62

10.4.1 Compatible ................................................................................................................................................. 62

10.5 Caption positioning .......................................................................................................................................... 62

10.6 Audio description timing ................................................................................................................................. 63

11 Software ................................................................................................................................................. 64

11.0 General (informative) ...................................................................................................................................... 64

11.1 Perceivable ....................................................................................................................................................... 65

11.1.1 Text alternatives ......................................................................................................................................... 65

11.1.2 Time-based media ...................................................................................................................................... 65

11.1.3 Adaptable ................................................................................................................................................... 67

11.1.4 Distinguishable ........................................................................................................................................... 68

11.2 Operable ........................................................................................................................................................... 70

11.2.1 Keyboard accessible ................................................................................................................................... 70

11.2.2 Enough time ............................................................................................................................................... 71

11.2.3 Seizures and physical reactions .................................................................................................................. 72

11.2.4 Navigable ................................................................................................................................................... 72

11.2.5 Input modalities .......................................................................................................................................... 73

11.3 Understandable ................................................................................................................................................ 74

11.3.1 Readable ..................................................................................................................................................... 74

11.3.2 Predictable .................................................................................................................................................. 75

11.3.3 Input assistance .......................................................................................................................................... 76

11.4 Robust .............................................................................................................................................................. 76

11.4.1 Compatible ................................................................................................................................................. 76

11.5 Interoperability with assistive technology ....................................................................................................... 78

11.5.1 Closed functionality ................................................................................................................................... 78

11.5.2 A
...

Draft EN 301 549 V3.2.1 (2020-12)
HARMONISED EUROPEAN STANDARD
Accessibility requirements for ICT products and services
---------------------- Page: 1 ----------------------
Draft EN 301 549 V3.2.1 (2020-12)
Reference
REN/HF-00301549v321
Keywords
accessibility, HF, ICT, procurement
CEN CENELEC ETSI
Rue de la science, 23 Rue de la science, 23 650 Route des Lucioles
B-1040 Brussels B-1040 Brussels F-06921 Sophia Antipolis Cedex -
- BELGIUM - BELGIUM FRANCE
Tel: + 32 2 550 08 11 Tel.: +32 2 519 68 71 Tel.: +33 4 92 94 42 00
Fax: + 32 2 550 08 19 Fax: +32 2 519 69 19 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:
ETSI Search & Browse Standards

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Contents

Contents .............................................................................................................................................................. 3

Intellectual Property Rights ................................................................................................................................ 8

Foreword............................................................................................................................................................. 8

Modal verbs terminology ................................................................................................................................... 9

Introduction ........................................................................................................................................................ 9

1 Scope ...................................................................................................................................................... 11

2 References .............................................................................................................................................. 11

2.1 Normative references ....................................................................................................................................... 11

2.2 Informative references ..................................................................................................................................... 12

3 Definition of terms, symbols and abbreviations ..................................................................................... 15

3.1 Terms ............................................................................................................................................................... 15

3.2 Symbols ........................................................................................................................................................... 19

3.3 Abbreviations ................................................................................................................................................... 19

4 Functional performance .......................................................................................................................... 20

4.1 Meeting functional performance statements .................................................................................................... 20

4.2 Functional performance statements ................................................................................................................. 20

4.2.1 Usage without vision .................................................................................................................................. 20

4.2.2 Usage with limited vision ........................................................................................................................... 20

4.2.3 Usage without perception of colour ........................................................................................................... 21

4.2.4 Usage without hearing ................................................................................................................................ 21

4.2.5 Usage with limited hearing ........................................................................................................................ 21

4.2.6 Usage with no or limited vocal capability .................................................................................................. 21

4.2.7 Usage with limited manipulation or strength ............................................................................................. 21

4.2.8 Usage with limited reach ............................................................................................................................ 22

4.2.9 Minimize photosensitive seizure triggers ................................................................................................... 22

4.2.10 Usage with limited cognition, language or learning ................................................................................... 22

4.2.11 Privacy ....................................................................................................................................................... 22

5 Generic requirements ............................................................................................................................. 23

5.1 Closed functionality ......................................................................................................................................... 23

5.1.1 Introduction (informative) .......................................................................................................................... 23

5.1.2 General ....................................................................................................................................................... 23

5.1.3 Non-visual access ....................................................................................................................................... 23

5.1.4 Functionality closed to text enlargement .................................................................................................... 26

5.1.5 Visual output for auditory information....................................................................................................... 27

5.1.6 Operation without keyboard interface ........................................................................................................ 27

5.1.7 Access without speech ............................................................................................................................... 28

5.2 Activation of accessibility features .................................................................................................................. 28

5.3 Biometrics ........................................................................................................................................................ 28

5.4 Preservation of accessibility information during conversion ........................................................................... 28

5.5 Operable parts .................................................................................................................................................. 28

5.5.1 Means of operation ..................................................................................................................................... 28

5.5.2 Operable parts discernibility ...................................................................................................................... 28

5.6 Locking or toggle controls ............................................................................................................................... 29

5.6.1 Tactile or auditory status ............................................................................................................................ 29

5.6.2 Visual status ............................................................................................................................................... 29

5.7 Key repeat ........................................................................................................................................................ 29

5.8 Double-strike key acceptance .......................................................................................................................... 29

5.9 Simultaneous user actions ................................................................................................................................ 29

6 ICT with two-way voice communication ............................................................................................... 30

6.1 Audio bandwidth for speech ............................................................................................................................ 30

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6.2 Real-Time Text (RTT) functionality ............................................................................................................... 30

6.2.1 RTT provision ............................................................................................................................................ 30

6.2.2 Display of RTT .......................................................................................................................................... 31

6.2.3 Interoperability ........................................................................................................................................... 31

6.2.4 RTT responsiveness ................................................................................................................................... 32

6.3 Caller ID .......................................................................................................................................................... 32

6.4 Alternatives to voice-based services ................................................................................................................ 32

6.5 Video communication ...................................................................................................................................... 33

6.5.1 General (informative) ................................................................................................................................. 33

6.5.2 Resolution .................................................................................................................................................. 33

6.5.3 Frame rate .................................................................................................................................................. 33

6.5.4 Synchronization between audio and video ................................................................................................. 33

6.5.5 Visual indicator of audio with video .......................................................................................................... 33

6.5.6 Speaker identification with video (sign language) communication............................................................ 34

6.6 Alternatives to video-based services ................................................................................................................ 34

7 ICT with video capabilities .................................................................................................................... 35

7.1 Caption processing technology ........................................................................................................................ 35

7.1.1 Captioning playback ................................................................................................................................... 35

7.1.2 Captioning synchronization ........................................................................................................................ 35

7.1.3 Preservation of captioning .......................................................................................................................... 35

7.1.4 Captions characteristics .............................................................................................................................. 35

7.1.5 Spoken subtitles ......................................................................................................................................... 35

7.2 Audio description technology .......................................................................................................................... 36

7.2.1 Audio description playback ........................................................................................................................ 36

7.2.2 Audio description synchronization ............................................................................................................. 36

7.2.3 Preservation of audio description ............................................................................................................... 36

7.3 User controls for captions and audio description ............................................................................................. 36

8 Hardware ................................................................................................................................................ 37

8.1 General ............................................................................................................................................................. 37

8.1.1 Generic requirements ................................................................................................................................. 37

8.1.2 Standard connections.................................................................................................................................. 37

8.1.3 Colour......................................................................................................................................................... 37

8.2 Hardware products with speech output ............................................................................................................ 37

8.2.1 Speech volume gain ................................................................................................................................... 37

8.2.2 Magnetic coupling ...................................................................................................................................... 37

8.3 Stationary ICT ................................................................................................................................................. 38

8.3.0 General ....................................................................................................................................................... 38

8.3.1 Forward or side reach ................................................................................................................................. 38

8.3.2 Forward reach............................................................................................................................................. 38

8.3.3 Side reach ................................................................................................................................................... 41

8.3.4 Clear floor or ground space ........................................................................................................................ 42

8.3.5 Visibility ..................................................................................................................................................... 43

8.3.6 Installation instructions .............................................................................................................................. 43

8.4 Mechanically operable parts ............................................................................................................................ 44

8.4.1 Numeric keys ............................................................................................................................................. 44

8.4.2 Operation of mechanical parts .................................................................................................................... 44

8.4.3 Keys, tickets and fare cards ........................................................................................................................ 44

8.5 Tactile indication of speech mode ................................................................................................................... 44

9 Web ........................................................................................................................................................ 45

9.0 General (informative) ...................................................................................................................................... 45

9.1 Perceivable ....................................................................................................................................................... 45

9.1.1 Text alternatives ......................................................................................................................................... 45

9.1.2 Time-based media ...................................................................................................................................... 45

9.1.3 Adaptable ................................................................................................................................................... 46

9.1.4 Distinguishable ........................................................................................................................................... 46

9.2 Operable ........................................................................................................................................................... 47

9.2.1 Keyboard accessible ................................................................................................................................... 47

9.2.2 Enough time ............................................................................................................................................... 48

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9.2.3 Seizures and physical reactions .................................................................................................................. 48

9.2.4 Navigable ................................................................................................................................................... 48

9.2.5 Input modalities .......................................................................................................................................... 49

9.3 Understandable ................................................................................................................................................ 49

9.3.1 Readable ..................................................................................................................................................... 49

9.3.2 Predictable .................................................................................................................................................. 49

9.3.3 Input assistance .......................................................................................................................................... 49

9.4 Robust .............................................................................................................................................................. 50

9.4.1 Compatible ................................................................................................................................................. 50

9.5 WCAG 2.1 AAA Success Criteria ................................................................................................................... 50

9.6 WCAG conformance requirements .................................................................................................................. 51

10 Non-web documents ............................................................................................................................... 52

10.0 General (informative) ...................................................................................................................................... 52

10.1 Perceivable ....................................................................................................................................................... 52

10.1.1 Text alternatives ......................................................................................................................................... 52

10.1.2 Time-based media ...................................................................................................................................... 53

10.1.3 Adaptable ................................................................................................................................................... 54

10.1.4 Distinguishable ........................................................................................................................................... 54

10.2 Operable ........................................................................................................................................................... 56

10.2.1 Keyboard accessible ................................................................................................................................... 56

10.2.2 Enough time ............................................................................................................................................... 57

10.2.3 Seizures and physical reactions .................................................................................................................. 58

10.2.4 Navigable ................................................................................................................................................... 58

10.2.5 Input modalities .......................................................................................................................................... 59

10.3 Understandable ................................................................................................................................................ 60

10.3.1 Readable ..................................................................................................................................................... 60

10.3.2 Predictable .................................................................................................................................................. 60

10.3.3 Input assistance .......................................................................................................................................... 61

10.4 Robust .............................................................................................................................................................. 62

10.4.1 Compatible ................................................................................................................................................. 62

10.5 Caption positioning .......................................................................................................................................... 62

10.6 Audio description timing ................................................................................................................................. 63

11 Software ................................................................................................................................................. 64

11.0 General (informative) ...................................................................................................................................... 64

11.1 Perceivable ....................................................................................................................................................... 65

11.1.1 Text alternatives ......................................................................................................................................... 65

11.1.2 Time-based media ...................................................................................................................................... 65

11.1.3 Adaptable ................................................................................................................................................... 67

11.1.4 Distinguishable ........................................................................................................................................... 68

11.2 Operable ........................................................................................................................................................... 70

11.2.1 Keyboard accessible ................................................................................................................................... 70

11.2.2 Enough time ............................................................................................................................................... 71

11.2.3 Seizures and physical reactions .................................................................................................................. 72

11.2.4 Navigable ................................................................................................................................................... 72

11.2.5 Input modalities .......................................................................................................................................... 73

11.3 Understandable ................................................................................................................................................ 74

11.3.1 Readable ..................................................................................................................................................... 74

11.3.2 Predictable .................................................................................................................................................. 75

11.3.3 Input assistance .......................................................................................................................................... 76

11.4 Robust .............................................................................................................................................................. 76

11.4.1 Compatible ................................................................................................................................................. 76

11.5 Interoperability with assistive technology ....................................................................................................... 78

11.5.1 Closed functionality ................................................................................................................................... 78

11.5.2 Accessibility services ................................................................................................................................. 78

11.6 Documented accessibility usage ...................................................................................................................... 81

11.6.1 User control of accessibility features ......................................................................................................... 81

11.6.2 No disruption of accessibility features ....................................................................................................... 82

11.7 User preferences ................................................................................

...

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