ETSI EN 301 549

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CAUTION: This document is provided
purely for

information. It is for use only within the STF.
For convenience, the
original "4." numbering of issue 3 is retained

in this version
.

Some changes from the last public commenting period can
only be incorporated
when a reorganisation towards the US Section 508 ANPRM format is made.

ETSI and its Members accept no liability for any further use/implementation of this Specification.





D
raft

ETSI EN 301 549
V0.0.
34

(2011
-
11
)

European Standard

Human Factors (HF);

A
ccessibility requirements for

public procurement of ICT products and service
s in Europe







ETSI

Draft ETSI EN 301 549 V0.0.34 (2011
-
11)

2





Reference

DEN/HF
-
00125

Keywords

ICT, Accessibility, procurement

ETSI

650 Route des Lucioles

F
-
06921 Sophia Antipolis Cedex
-

FRAN
CE


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


Siret N° 348 623 562 00017
-

NAF 742 C

Association à but non lucratif enregistrée à la

Sous
-
Préfecture de Grasse (06) N° 7803/88


Important notice

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ocument may be subject to revision or change of status.
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If you find er
rors in the present document, please send your comment to one of the following services:

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Copyright Notification

Reproduction is only permitted
for the purpose of standardization work undertaken within ETSI.

The copyright and the foregoing restrictions extend to reproduction in all media.


© European Telecommunications Standards Institute 2011.

© Comité Européen de Normalisation Electrotechnique 2
011.

All rights reserved.


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,
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, the TIPHON logo and the ETSI logo are Trade Marks of ETSI registered
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ETSI

Draft E
TSI EN 301 549 V0.0.34 (2011
-
11)

3


Contents

Intellectual Property Rights

................................
................................
................................
..............................

10

Foreword
................................
................................
................................
................................
...........................

10

Introduction

................................
................................
................................
................................
......................

10

1

Scope

................................
................................
................................
................................
......................

11

2

References

................................
................................
................................
................................
..............

11

2.1

Normati
ve references

................................
................................
................................
................................
.......

11

2.2

Informative references

................................
................................
................................
................................
.....

12

3

Definitions and abbreviations

................................
................................
................................
.................

12

3.1

Definitions

................................
................................
................................
................................
.......................

12

3.2

Abbreviations

................................
................................
................................
................................
...................

14

4

Functional requirements

................................
................................
................................
.........................

15

4.1

Generic requirements

................................
................................
................................
................................
.......

15

4.1.1

Closed functionality

................................
................................
................................
................................
...

15

4.1.1.1

Non
-
visual access to closed functionality

................................
................................
.............................

15

4.1.1.2

Limited vision access to closed functionality

................................
................................
.......................

15

4.1.1.3

Non
-
auditory access to closed functionality

................................
................................
.........................

15

4.1.1.4

Non
-
speech access to closed functionality

................................
................................
...........................

16

4.1.1.5

Restricted interoperability of closed functionality

................................
................................
................

16

4.1.2

Biometrics

................................
................................
................................
................................
..................

16

4.1.3

Pass through

................................
................................
................................
................................
...............

16

4.1.4

Audio information alternatives

................................
................................
................................
...................

16

4.1.5

Visual information alternatives

................................
................................
................................
..................

17

4.1.6

Colour
................................
................................
................................
................................
.........................

17

4.1.7

Text size

................................
................................
................................
................................
.....................

17

4.1.8

Speech operation alternatives

................................
................................
................................
.....................

17

4.2

Hardware

................................
................................
................................
................................
.........................

17

4.2.1

Reflectance contrast

................................
................................
................................
................................
...

17

4.2.2

Flashing

................................
................................
................................
................................
.....................

17

4.2.3

Controls

................................
................................
................................
................................
......................

17

4.2.3.1

Tactilely discernable controls

................................
................................
................................
...............

17

4.2.3.2

Non
-
tactilely discernable controls

................................
................................
................................
........

17

4.2.3.3

Locking or toggle controls

................................
................................
................................
....................

17

4.2.3.4

Locking or toggle controls (visually discernable)

................................
................................
................

17

4.2.3.5

Key repeat

................................
................................
................................
................................
.............

18

4.2.3.6

Rate of key repeat

................................
................................
................................
................................
.

18

4.2.4

Non
-
mechanically operated controls

................................
................................
................................
.........

18

4.2.5

Standard connection

................................
................................
................................
................................
...

18

4.2.6

R
each range for free
-
standing ICT

................................
................................
................................
.............

18

4.2.6.1

Forward reach

................................
................................
................................
................................
.......

18

4.2.6.1.1

Unobstructed high forward reach

................................
................................
................................
....

18

4.2.6.1.2

Unobstructed low forward reach

................................
................................
................................
.....

18

4.2.6.1.3

Obstructed reach

................................
................................
................................
.............................

18

4.2.6.1.3.1

Clear floor space

................................
................................
................................
........................

18

4.2.6.1.3.2

Obstructed (<510

mm) forward reach

................................
................................
.......................

19

4.2.6.1.3.3

Obstructed (<635

mm) forwar
d reach

................................
................................
.......................

19

4.2.6.2

Side reach

................................
................................
................................
................................
.............

19

4.2.6.2.1

Unobstructed high side reach

................................
................................
................................
..........

19

4.2.6.2. 2

Unobstructed low side reach

................................
................................
................................
...........

19

4.2.6.2.3

Obstructe
d side reach

................................
................................
................................
......................

20

4.2.6.2.3.1

Obstructed (<255

mm) side reach

................................
................................
.............................

20

4.2.6.2.3.2

Obstructed (<610

mm) side reach

................................
................................
.............................

20

4.2.6.a

Reach range for installed ICT

................................
................................
................................
....................

20

4.2.7

Hardware products with speech output or throughput

................................
................................
................

20


ETSI

Draft ETSI EN 301 549 V0.0.34 (2011
-
11)

4


4.2.7.1

Magnetic coupling

................................
................................
................................
..........................

20

4.2.7.1.1

Provision of magnetic coupling

................................
................................
................................
......

20

4.2.7.1.2

Level

................................
................................
................................
................................
...............

20

4.2.7.1.3

Linearity of the magnetic field strength

................................
................................
..........................

21

4.2.7.1.4

Frequency characteristics

................................
................................
................................
................

21

4.2.7.1.5

Distortion

................................
................................
................................
................................
........

21

4.2.7.1.6

Noise

................................
................................
................................
................................
...............

22

4.2.7.1.7

Signal to Noise ratio

................................
................................
................................
........................

22

4.2.7.2

Interference with hearing device

................................
................................
................................
..........

22

4.2.7.3

Audio connection

................................
................................
................................
................................
..

22

4.2.7.4

Volume

................................
................................
................................
................................
.................

22

4.2.7.5

Volume (gain)

................................
................................
................................
................................
.......

22

4.2
.7.6

Volume reset for ICT typically held to the ear

................................
................................
.....................

23

4.2
.7.6a

Volume reset for ICT not typically held to the ear

................................
................................
...............

23

4.3

Software and electronic content

................................
................................
................................
.......................

23

4.3.1

Applicability

................................
................................
................................
................................
...............

23

4.3.a

Colour

................................
................................
................................
................................
........................

23

4.3.2

Contrast

................................
................................
................................
................................
......................

23

4.3.3

Perceptual characteristics

................................
................................
................................
...........................

23

4.3.4

User preferences

................................
................................
................................
................................
.........

23

4.3.4.1

User preferences

................................
................................
................................
................................
...

23

4.3.4.2

Underlying platform software settings

................................
................................
................................
.

23

4.3.5

Colour adjustment

................................
................................
................................
................................
......

23

4.3.6

Non
-
text objects

................................
................................
................................
................................
.........

24

4.3.6.1

Pure decoration

................................
................................
................................
................................
.....

24

4.3.6.2

Images of text

................................
................................
................................
................................
.......

24

4.3.6.3

Controls

................................
................................
................................
................................
................

24

4.3.6.4

Time
-
bas
ed media

................................
................................
................................
................................

24

4.3.6.5

Tests or exercises

................................
................................
................................
................................
..

24

4.3.6.6

Sensory experience

................................
................................
................................
...............................

24

4.3.6.7

CAPTCHA

................................
................................
................................
................................
...........

24

4.3.6.8

Default case

................................
................................
................................
................................
..........

24

4.3.7

Human language of document

................................
................................
................................
....................

24

4.3.8

Human language of parts

................................
................................
................................
............................

24

4.3.9

Control over moving, blinking or scrolling content

................................
................................
...................

25

4.3.9a

Control over auto
-
upd
ating information

................................
................................
................................
.....

25

4.3.10

Flash threshold

................................
................................
................................
................................
...........

25

4.3.11

Consistent identification

................................
................................
................................
.............................

25

4.3.12

Audio control

................................
................................
................................
................................
.............

25

4.3.13

Logically correct read
ing sequence

................................
................................
................................
............

26

4.3.13a

Focus order

................................
................................
................................
................................
.................

26

4.3.13b

Bypass segment of content

................................
................................
................................
.........................

26

4.3.14

Link purpose
................................
................................
................................
................................
...............

26

4.3.15

Information and relationships

................................
................................
................................
.....................

26

4.3.16

User interface components

................................
................................
................................
.........................

26

4.3.16.1

Names and roles

................................
................................
................................
................................
...

26

4.3.16.2

Readable states, properties and values
................................
................................
................................
.

27

4.3.16.3

Settable
states, properties and values

................................
................................
................................
...

27

4.3.16.4

Change notification

................................
................................
................................
..............................

27

4.3.17

Disruption of accessibility features

................................
................................
................................
............

27

4.3.18

Time limits

................................
................................
................................
................................
.................

27

4.
3.19

Keyboard operation

................................
................................
................................
................................
....

27

4.3.19.1

Keyboard interface

................................
................................
................................
................................
.....

27

4.3.19.2

No trapping of keyboard focus cursor

................................
................................
................................
........

27

4.3.19.2.1

Keyboard trap

................................
................................
................................
................................
.......

27

4
.3.19.2.2

Exit method

................................
................................
................................
................................
..........

28

4.3.19.3

Presentation of keyboard shortcuts

................................
................................
................................
.............

28

4.3.19.4

Keyboard focus indicator

................................
................................
................................
...........................

28

4.3.19.5

Focus, text cursor and attributes

................................
................................
................................
.................

28

4.3.20

Keyboard shortcuts

................................
................................
................................
................................
....

28

4.3.21

Keyboard focus indicator

................................
................................
................................
...........................

28

4.3.22

Platform Accessibility Services

................................
................................
................................
..................

28


ETSI

Draft ETSI EN 301 549 V0.0.34 (2011
-
11)

5


4.3.22.1

Provide platform accessibility s
ervices
................................
................................
................................
.

28

4.3.22.2

Applications that are software platforms

................................
................................
..............................

28

4.3.22.3

Information about role, state, boundary, name and description

................................
............................

28

4.3.22.4

Information about v
alues

................................
................................
................................
......................

28

4.3.22.5

Information about text

................................
................................
................................
..........................

28

4.3.22.6

Information about relationships: labels
................................
................................
................................
.

29

4.3.22.7

Information about relationships: data tables

................................
................................
.........................

29

4.3.22.8

Information about relationships: hierarchies

................................
................................
........................

29

4.3.22.9

Information about relationships: other

................................
................................
................................
..

29

4.3.22.10

Information about available actions

................................
................................
................................
......

29

4.3.22.11

Execution of available actions

................................
................................
................................
..............

29

4.3.22.12

Tracking of focus and selection attributes

................................
................................
............................

29

4.3.22.13

Modification of focus and selection attributes

................................
................................
......................

29

4.3.22.14

Notifications: values

................................
................................
................................
.............................

29

4.3.22.15

Notifications: names

................................
................................
................................
.............................

30

4.3.22.16

Notifications: descriptions

................................
................................
................................
....................

30

4.3.22.17

Notifications: boundary

................................
................................
................................
........................

30

4.3.22.18

Notifications: hierarchy

................................
................................
................................
........................

30

4.3.22.19

Notifications: other events

................................
................................
................................
....................

30

4.3.22.20

Modifications of states, properties, values and text

................................
................................
..............

30

4.3.23

I
nteroperability of Assistive Technology

................................
................................
................................
...

30

4.3.23.1

Use of accessibility services

................................
................................
................................
.................

30

4.3.23.2

Information about role, state, boundary, name and description

................................
............................

30

4.3.23.
3

Information about values

................................
................................
................................
......................

30

4.3.23.4

Information about text

................................
................................
................................
..........................

31

4.3.23.5

Information about relationships: labels
................................
................................
................................
.

31

4.3.23.6

Information about relationships: data ta
bles

................................
................................
.........................

31

4.3.23.7

Information about relationships: hierarchies

................................
................................
........................

31

4.3.23.8

Information about other relationships

................................
................................
................................
...

31

4.3.23.9

Information about available actions

................................
................................
................................
......

31

4.3.23.10

Execution of available actions

................................
................................
................................
..............

31

4.3.23.11

Tracking of focus and selection attributes

................................
................................
............................

31

4.3.23.12

Modification of focus and selection attributes

................................
................................
......................

31

4.3.23.13

Notifications: values

................................
................................
................................
.............................

31

4.3.23.14

Notifications: names

................................
................................
................................
.............................

31

4.3.23.15

Notifications: descriptions

................................
................................
................................
....................

31

4.3.23.16

Notifications: boundary

................................
................................
................................
........................

32

4.3.23.17

Notifications: hierarchy

................................
................................
................................
........................

32

4.3.23.18

Notifications: other events

................................
................................
................................
....................

32

4.3.23.19

Modifications of states, properties, values and text

................................
................................
..............

32

4.3.24

Assistive technology function

................................
................................
................................
....................

32

4.3.25

Multiple ways

................................
................................
................................
................................
.............

32

4.3.26

Labels or instructions

................................
................................
................................
................................
.

32

4.3.27

No change of context from focus

................................
................................
................................
...............

32

4.3.28

No change of context from change of settings

................................
................................
...........................

32

4.3.28a

Consistent navigation order

................................
................................
................................
........................

32

4.3.29

Input error location and type

................................
................................
................................
......................

32

4.3.29a

Error prev
ention (legal, financial, data)

................................
................................
................................
.....

33

4.4

Audio visual equipment

................................
................................
................................
................................
...

33

4.4.1

Captioning/subtitling playback
................................
................................
................................
...................

33

4.4.2

Supplemental audio playback

................................
................................
................................
.....................

33

4.4.3

Access to controls

................................
................................
................................
................................
......

33

4.5

Audio/visual content

................................
................................
................................
................................
........

33

4.5.1

Captions and transcripts

................................
................................
................................
.............................

33

4.5.2

Audio description

................................
................................
................................
................................
.......

33

4.5.3

Interac
tive elements
................................
................................
................................
................................
....

33

4.6

Real
-
time conversation

................................
................................
................................
................................
....

34

4.6.1

Real
-
time text (RTT)

................................
................................
................................
................................
..

34

4.6.1.1

Real
-
time text functionality

................................
................................
................................
..................

34

4.6.1.2

Effectivene
ss
................................
................................
................................
................................
.........

34

4.6.1.2.1

Coding

................................
................................
................................
................................
.............

34

4.6.1.2.2

Editing and control functions

................................
................................
................................
..........

34


ETSI

Draft ETSI EN 301

549 V0.0.34 (2011
-
11)

6


4.6.1.2.4

Transmission delay

................................
................................
................................
.........................

34

4.6.1.2.5

Equitable support

................................
................................
................................
............................

34

4.6.1.2.6

Error rate

................................
................................
................................
................................
.........

34

4.6.1.2.7

Speech and text support

................................
................................
................................
..................

34

4.6.1.2.7.1

All systems

................................
................................
................................
................................

34

4.6.1.2.7.2

IP based systems

................................
................................
................................
........................

34

4.6.1.2.8

Tone signals

................................
................................
................................
................................
....

34

4.6.1.3

Interoperability

................................
................................
................................
................................
.....

35

4.6.1.3.1

PSTN based systems

................................
................................
................................
.......................

35

4.6.1.3.2

VOIP based systems

................................
................................
................................
.......................

35

4.6.1.3.
3

Other call control systems

................................
................................
................................
...............

35

4.6.1.4

Pass through products

................................
................................
................................
...........................

35

4.6.1.5

Voice terminal hardware and software

................................
................................
................................
.

35

4.6.1.5.1

Real
-
time text over IP

................................
................................
................................
.....................

35

4.6.1.5.1.1

RTT capability
................................
................................
................................
...........................

35

4.6.1.5.1.1.1

Display of RTT

................................
................................
................................
....................

35

4.6.1.5.1.1.2

Text generation

................................
................................
................................
....................

35

4.6.1.5.1.2

Connection of alternate device

................................
................................
................................
..

35

4.6.1.5.2

Text telephone compatibility

................................
................................
................................
..........

36

4.6.1.5.2.1

Text telephone connection

................................
................................
................................
.........

36

4.6.1.5.2.2

Simultaneous or combination of speech and text

................................
................................
......

36

4.6
.2

Voice terminal hardware and software

................................
................................
................................
.......

36

4.6.3

Voice mail, stored voice services and messaging

................................
................................
.......................

36

4.6.4

Caller and status information

................................
................................
................................
.....................

36

4.6.5

Video support

................................
................................
................................
................................
.............

36

4.6.6

Audio clarity for VoIP
................................
................................
................................
................................

36

4.6.7

External alerting devices

................................
................................
................................
............................

36

4.7

Authoring tools

................................
................................
................................
................................
................

36

4.7.1

Accessible output

................................
................................
................................
................................
.......

36

4.7.2

Preserve accessibility information

................................
................................
................................
..............

37

4.7.3

Prompts

................................
................................
................................
................................
......................

37

4.7.4

Accessible templates

................................
................................
................................
................................
..

37

4.8

Information documentation and technical support

................................
................................
...........................

37

4.8.1

Accessible documentation

................................
................................
................................
..........................

37

4.8.2

Keyboard shortcuts documentation

................................
................................
................................
............

37

4.8.3

Support services

................................
................................
................................
................................
.........

37

4.9

Implementation, operation and maintenance

................................
................................
................................
...

37

4.9.a

Relay sevices requirements

................................
................................
................................
........................

37

4.9.1

Access to relay services

................................
................................
................................
..............................

37

4.9.2

Video support

................................
................................
................................
................................
.............

38

4.9.2.1

Video communication quality
................................
................................
................................
...............

38

4.9.2.1.1

Minimum Resolution

................................
................................
................................
......................

38

4.9.2.1.1a

Preferred Resolution

................................
................................
................................
.......................

38

4.9.2.1.2

Frame rate

................................
................................
................................
................................
.......

38

4.9.2.1.3

Data stream

................................
................................
................................
................................
.....

38

4.9.2.1.4

Latency
................................
................................
................................
................................
............

38

4.9.2.2

Non
-
auditory alerting system

................................
................................
................................
...............

38

4.9.3

Accessibility configuration

................................
................................
................................
........................

38

4.9.4

Accessible content

................................
................................
................................
................................
......

38

An
nex A (normative): Demonstration of compliance

................................
................................
..................

39

A.1

Introduction

................................
................................
................................
................................
............

39

A.2

Blank clause

................................
................................
................................
................................
...........

39

A.3

Blank clause

................................
................................
................................
................................
...........

39

A.4

Compliance demonstrati
on

................................
................................
................................
.....................

39

A.4.1

Functional requirements

................................
................................
................................
................................
..

39

A.4.1.1

Closed functionality

................................
................................
................................
................................
...

39

A.4.1.1.1

Non
-
visual access to closed functionality

................................
................................
.............................

39

A.4.1.1.2

Limited vision access to closed functionality

................................
................................
.......................

39


ETSI

Draft ETSI EN 301 549 V0.0.34 (2011
-
11)

7


A.4.1.1.3

Non
-
auditory access to closed functionality

................................
................................
.........................

39

A.4.1.1.4

Non
-
speech access to closed functionality

................................
................................
...........................

39

A.4.1
.1.5

Restricted interoperability of closed functionality

................................
................................
................

39

A.4.1.2

Biometric ID
................................
................................
................................
................................
...............

39

A.4.1.3

Pass through

................................
................................
................................
................................
...............

39

A.4.1.4

Audio information alternatives

................................
................................
................................
...................

40

A.4.1.5

Visual information alternatives

................................
................................
................................
..................

40

A.4.1.6

Colour
................................
................................
................................
................................
.........................

40

A.4.1.7

Text size

................................
................................
................................
................................
.....................

40

A.4.1.8

Speech operation alternatives

................................
................................
................................
.....................

40

A.4.2

Hardware

................................
................................
................................
................................
.........................

40

A.4.2.1

Reflectance contrast

................................
................................
................................
................................
...

40

A.4.2.2

Flashing

................................
................................
................................
................................
......................

41

A.4.2.3

Hand operated controls
................................
................................
................................
...............................

41

A.4.2.3.1

Tactilely discernable

................................
................................
................................
.............................

41

A.4.2.3.2

Locking or toggle controls

................................
................................
................................
....................

41

A.4.2.3.3

Key repeat

................................
................................
................................
................................
.............

41

A.4.2.3.4

Rate of key repeat

................................
................................
................................
................................
.

41

A.4.2.4

Touch operated controls

................................
................................
................................
.............................

41

A.4.2.5

Standard connection

................................
................................
................................
................................
...

41

A.4.2.6

Installed or free
-
standing products

................................
................................
................................
.............

41

A.4.2.7

Hardware products with speech output or throughput

................................
................................
................

41

A.4.2.7.1

Magnetic coupling

................................
................................
................................
................................

41

A.4.2.7.1.1

Probe coil

................................
................................
................................
................................
........

41

A.4.2.7.1.1.1

Probe coil dimensions

................................
................................
................................
...............

41

A.4.2.7.1.1.2

Calibration of probe coil
................................
................................
................................
............

42

A.4.2.7.1.1.3

Distortion

................................
................................
................................
................................
...

43

A.4.2.7.1.1.4

Connecting leads for probe coil

................................
................................
................................
.

43

A.4.2.7.1.2

Measurement of the magnetic field strength level

................................
................................
..........

43

A.4.2.7.1.3

Measure
ment of the linearity of the magnetic field strength

................................
...........................

43

A.4.2.7.1.4

Measurement of frequency characteristics

................................
................................
......................

43

A.4.2.7.1.5

Setting of drive level

................................
................................
................................
.......................

44

A.4.2.7.2

Interf
erence with hearing device

................................
................................
................................
..........

45

A.4.2.7.3

Audio connection

................................
................................
................................
................................
..

45

A.4.2.7.4

Volume

................................
................................
................................
................................
.................

45

A.4.2.7.5

Volume (gain)

................................
................................
................................
................................
.......

46

A.4.2.7.6

Volume reset for IC
T typically held to the ear

................................
................................
.....................

46

A.4.2
.7.6.
a

Volume reset for ICT not typically held to the ear

................................
................................
...............

46

A.4.3

Software and electronic content

................................
................................
................................
.......................

46

A.4.3.1

Applicability

................................
................................
................................
................................
...............

46

A.4.3.2

Contrast

................................
................................
................................
................................
......................

46

A.4.3.3

Perceptual characteristics

................................
................................
................................
...........................

46

A.4.3.4

User preferences

................................
................................
................................
................................
.........

46

A 4.3.4.1

User preferences

................................
................................
................................
................................
...

46

A.4.3.4.2

Underlying platform software settings

................................
................................
................................
.

46

A.4.3.5

Colour adjustment

................................
................................
................................
................................
......

46

A.4.3.6

Non
-
text objects

................................
................................
................................
................................
.........

47

A.4.3.6.1

Pure decoration

................................
................................
................................
................................
.....

47

A.4.3.6.2

Images of text

................................
................................
................................
................................
.......

47

A.4.3.6.3

Controls

................................
................................
................................
................................
................

47

A.4.3.6.4

Time
-
based media

................................
................................
................................
................................

47

A.4.3.6.5

Tests or exercises

................................
................................
................................
................................
..

47

A.4.3.6.6

Sensor
y experience

................................
................................
................................
...............................

48

A.4.3.6.7

CAPTCHA

................................
................................
................................
................................
...........

48

A.4.3.6.8

Default case

................................
................................
................................
................................
..........

48

A.4.3.7

Human language of document

................................
................................
................................
....................

48

A.4.3.8

Human language of parts

................................
................................
................................
............................

49

A.4.3.9

Control over moving, blinking or scrolling content

................................
................................
...................

49

A.4.3.9a

Control over auto
-
updating information

................................
................................
................................
.....

49

A.4.3.10

Flash threshold

................................
................................
................................
................................
...........

49

A.4.3.11

Consistent identification

................................
................................
................................
.............................

50

A.4.3.12

Audio control

................................
................................
................................
................................
.............

50


ETSI

Draft ETSI EN 301 549 V0.0.34 (2011
-
11)

8


A.4.3.13

Logically correct reading sequence

................................
................................
................................
............

50

A.4.3.13a

Focus order

................................
................................
................................
................................
.................

50

A.4.3.14

Link purpose
................................
................................
................................
................................
...............

50

A.4.3.15

Information and relationships

................................
................................
................................
.....................

50

A.4.3.16

User interface components

................................
................................
................................
.........................

50

A.4.3.17

Disruption of accessibility features

................................
................................
................................
............

51

A.4.3.18

Time limits

................................
................................
................................
................................
.................

51

A.4.3.19

Keyboard operation

................................
................................
................................
................................
....

51

A.4.3.20

Keyboard shortcuts

................................
................................
................................
................................
.....

51

A.4.3.21

Focus indicator

................................
................................
................................
................................
...........

51

A.4.3.22

AT interoperability

................................
................................
................................
................................
.....

51

A.4.3.23

Accessibility services

................................
................................
................................
................................
.

51

A.4.3.24

Assistive technology

................................
................................
................................
................................
..

51

A.4.3.25

Multiple ways

................................
................................
................................
................................
.............

51

A.4.3.26

Labels or instructions

................................
................................
................................
................................
.

52

A.4.3.27

On focus

................................
................................
................................
................................
.....................

52

A.4.3.28

On input

................................
................................
................................
................................
......................

52

A.4.3.29

Input error location and type

................................
................................
................................
......................

52

A.4.3.29a

Error prevention

(legal, financial, data)

................................
................................
................................
.....

52

A.4.3.30

Headings and labels

................................
................................
................................
................................
....

52

A.4.3.31

Advisory recommendations

................................
................................
................................
........................

52

A.4.3.31.1

Suppression of unneeded function

................................
................................
................................
........

52

A.4.3.31.2

Writing guidelines

................................
................................
................................
................................

52

A.4.3.31.3

Interaction guidelines

................................
................................
................................
...........................

52

A.4.3.31.4

Parsing

................................
................................
................................
................................
..................

52

A.4.3.31.5

User preferences (non
-
visual)

................................
................................
................................
...............

52

A.4.4

Audio visual equipment

................................
................................
................................
................................
...

53

A.4.4.1

Captioning/subtitling playback
................................
................................
................................
...................

53

A.4.4.2

Supplemental audio playback

................................
................................
................................
.....................

53

A.4.4.3

Access to controls

................................
................................
................................
................................
......

53

A.4.5

Audio/visual content

................................
................................
................................
................................
........

53

A.4.5.1

Captions and transcripts

................................
................................
................................
.............................

53

A.4.5.2

Audio description

................................
................................
................................
................................
.......

53

A.4.5.3

Interactive elements
................................
................................
................................
................................
....

53

A.4.6

Real
-
time conversation

................................
................................
................................
................................
....

53

A.4.6.1

Real
-
time text (RTT)

................................
................................
................................
................................
..

53

A.4.6.1.1

Real
-
time text functionality

................................
................................
................................
..................

53

A.4.6.1.2

Effectiveness
................................
................................
................................
................................
.........

53

A.4.6.1.2.1

Coding

................................
................................
................................
................................
.............

53

A.4.6.1.2.2

Editing and control functions

................................
................................
................................
..........

53

A.4.6.1.2.3

Text format

................................
................................
................................
................................
.....

53

A.4.6.1.2.4

Transmission delay

................................
................................
................................
.........................

53

A.4.
6.1.2.5

Equitable support

................................
................................
................................
............................

54

A.4.6.1.2.6

Error rate

................................
................................
................................
................................
.........

54

A.4.6.1.2.7

Speech and text support

................................
................................
................................
..................

54

A.4.6.1.2.7.1

All systems

................................
................................
................................
................................

54

A.4.6.1.2.7.2

IP based systems

................................
................................
................................
........................

54

A.4.6.1.2.8

Tone signals

................................
................................
................................
................................
....

54

A.4.6.1.3

Interoperability

................................
................................
................................
................................
.....

54

A.4.6.1.3.1

PSTN based systems

................................
................................
................................
.......................

54

A.4.6.1.3.2

VOIP based
systems

................................
................................
................................
.......................

54

A.4.6.1.3.3

Other call control systems

................................
................................
................................
...............

54

A.4.6.1.4

Pass through products

................................
................................
................................
...........................

54

A.4.6.1.5

Voice terminal hardware and software

................................
................................
................................
.

54

A.4.6.1.5.1

Real
-
time text over IP

................................
................................
................................
.....................

54

A.4.6.1.5.1.1

RTT capability
................................
................................
................................
...........................

54

A.4.6.1.5.1.1.1

Display of RTT

................................
................................
................................
....................

54

A.4.6.1.5.1.1.2

Text generation

................................
................................
................................
....................

54

A.4.6.1.5.1.2

Connection of alternate device

................................
................................
................................
..

54

A.4.6.1.5.2

Text telephone compatibility

................................
................................
................................
..........

55

A.4.6.1.5.2.1

Text telephone connection

................................
................................
................................
.........

55

A.4.6.1.5.2.2

Simultaneous

or combination of speech and text

................................
................................
......

55


ETSI

Draft ETSI EN 301 549 V0.0.
34 (2011
-
11)

9


A.4.6.2

Voice terminal hardware and software

................................
................................
................................
.......

55

A.4.6.3

Voice mail, stored voice services and messaging

................................
................................
.......................

55

A.4.6.4

Caller and st
atus information

................................
................................
................................
.....................

55

A.4.6.5

Video support

................................
................................
................................
................................
.............

55

A.4.6.6

Audio clarity for VoIP
................................
................................
................................
................................

55

A.4.6.7

External alerting devices

................................
................................
................................
............................

55

A.4.7

Authoring tool
s

................................
................................
................................
................................
................

55

A.4.7.1

Accessible output

................................
................................
................................
................................
.......

55

A.4.7.2

Preserve accessibility information

................................
................................
................................
..............

55

A.4.7.3

Prompts

................................
................................
................................
................................
......................

55

A.4.7.4

Accessible templates

................................
................................
................................
................................
..

55

A.4.8

Information documentation and technical support

................................
................................
...........................

56

A.4.8.1

Accessible documentation

................................
................................
................................
..........................

56

A.4.8.2

Keyboard shortcuts documentation

................................
................................
................................
............

56

A.4.
8.3

Support services

................................
................................
................................
................................
.........

56

A.4.9

Implementation, operation and maintenance

................................
................................
................................
...

56

A.4.9.a

Relay sevices requirements

................................
................................
................................
........................

56

A.4.9.1

Access to relay services

................................
................................
................................
..............................

56

A.4.9.2

Video support

................................
................................
................................
................................
.............

56

A.4.9.2.1

Video communication quality
................................
................................
................................
...............

56

A.4.9.2.1.1

Minimum Resolution

................................
................................
................................
......................

56

A.4.9.2.1.1a

Preferred Resolution

................................
................................
................................
.......................

56

A.4.9.2.1.2

Frame rate

................................
................................
................................
................................
.......

56

A.4.9.2.1.3

Data stream

................................
................................
................................
................................
.....

56

A.4.9.2.1.4

Latency
................................
................................
................................
................................
............

56

A.4.9.2.2

Non
-
auditory alerting system

................................
................................
................................
...............

56

A.4.
9.3

Accessibility configuration

................................
................................
................................
........................

56

A.4.9.4

Accessible content

................................
................................
................................
................................
......

56

Annex B (Normative): Web Content Accessibility Guidelines (WCAG) 2.0

................................
.............

57

B.1

First clause of the annex

................................
................................
................................
.........................

57

B.1.1

First subdivided clause of the annex

................................
................................
................................
................

57

History

................................
................................
................................
................................
..............................

58



ETSI

Draft ETSI EN 301 549 V0.0.34 (2011
-
11)

10


Intellectual Property Rights

IPRs essential or potentially essential to the present document may have
been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for
ETSI members and non
-
members
, and can be found
in ETSI

SR

000

314:
"Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs
notified to ETSI in
respect of ETSI standards"
, which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (
http://webapp.etsi.org/IPR/home.asp
).

Pursuant to the ETSI

IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI

SR

000

314 (or the updates on the ETSI Web
server) which are, or may be, or may become,
essential to the present document.

Foreword

This draft European Standard (EN) has been produced by ETSI Technical Committee Human Factors (HF)

and a Joint
Working Group (JWG) of CEN/CENELEC/ETSI
,
and is now submitted

for the
phase of the ETSI standards Two
-
step
Approval Procedure
.


Proposed national transposition dates

Date of latest announcement of this EN (doa):

3 months after ETSI publication

Date of latest publication of new National Standard

or endorsement of this EN (dop/e):


6 months after doa

Dat
e of withdrawal of any conflicting National Standard (dow):

6 months after doa


Introduction

The outline of
any

requirements shown in italics are placeholders
based upon the words from Phase 1
of M376
.

In future drafts it is expected that a “
Functional Pe
rformance Criteria
” clause will be added, with a similar scope to that
of “Chapter 2” of the current version of the
Section
508
/255

ANPRM (
http://www.access
-
board.gov/sec508/refresh/d
raft
-
rule.htm

).



ETSI

Draft ETSI EN 301 549 V0.0.34 (2011
-
11)

11


1

Scope

The present document

specifies
the functional accessibility requirements applicable to ICT products and services
,

together with a full description of the test procedures and evaluation methodology for each requirement

in a form
that is
suitable for use in public procurement
.

The present document is
intended to be used

as the basis for
an online
procurement toolkit. It will
primarily