SIST EN 301 549 V4.1.1:2026

• Abstract:

  The present document specifies the accessibility requirements applicable to ICT products and services, together with a description of the test procedures and evaluation methodology for each accessibility requirement. ; The present document is intended for use by designers, developers, evaluators, manufacturers, market surveillance entities, procurers, researchers, and anyone else interested in the accessibility of ICT products and services. ; The present document is not intended to apply to assistive technologies that are designed specifically for use by people with disabilities, except for requirement 11.5.2.4 that requires assistive technologies to use the documented platform accessibility services, although making assistive technologies usable and applicable for people with multiple disabilities is desirable. The requirements do apply to the launch of assistive technologies since that is a function of the platform, not the assistive technology. ; The present document supports the implementation of Directive (EU) 2016/2102 on the accessibility of the websites and mobile applications of public sector bodies [i.27], and of Directive (EU) 2019/882 on the accessibility of ICT products and services [i.29]. The coverage of the essential requirements of these Directives is given in Annexes ZA and ZB. ; The present document contains the necessary accessibility requirements and provides a reference document such that if procedures are followed by different actors, the results of testing are similar and the interpretation of those results is clear. The test descriptions and evaluation methodology included in the present document are elaborated to a level of detail compliant with ISO/IEC 17007:2009 [i.14], so that conformance testing can give conclusive results.

• Status: Published
• Public Enquiry End Date: 31-Jan-2026
• Publication Date: 09-Sep-2026
• ICS: 35.020 - Information technology (IT) in general
• Technical Committee: SPN - Services and Protocols for Networks
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 07-Sep-2026
• Due Date: 12-Nov-2026
• Completion Date: 10-Sep-2026
• Ref Project: ETSI EN 301 549 V4.1.1 (2026-09) - Accessibility requirements for ICT products and services

SIST EN 301 549 V4.1.1:2026 is the Slovenian standard identical to ETSI EN 301 549 V4.1.1 (2026-09), published by SIST as a harmonised European standard. It specifies accessibility requirements for ICT products and services and describes the test procedures and evaluation methods used to check those requirements. The standard is written for designers, developers, evaluators, manufacturers, market surveillance entities, procurers, researchers, and others working with accessible ICT.

What does SIST EN 301 549 V4.1.1:2026 specify?

SIST EN 301 549 V4.1.1:2026 specifies accessibility requirements for ICT products and services, together with test procedures and an evaluation methodology for each requirement. In practice, it is meant to give different actors a common way to assess accessibility so that testing results are comparable and the interpretation of those results is clear.

The standard supports implementation of Directive (EU) 2016/2102 and Directive (EU) 2019/882. It is not intended for assistive technologies designed specifically for use by people with disabilities, except for requirement 11.5.2.4 on use of documented platform accessibility services. The requirements still apply to the launch of assistive technologies because that function belongs to the platform.

The document is organized into clauses 1 to 14 and a set of annexes that map the requirements to directives, functional performance criteria, and conformance testing.

Annex	What it covers
Annex A	Conformance with Directive (EU) 2016/2102 and Directive (EU) 2019/882
Annex B	Relationship between clauses 5 to 13 and the functional performance criteria
Annex C	Sufficient tests and test descriptions for conformance
Annex E	Additional resources, including self-scoping and cognitive accessibility material
Annex ZA	Relationship with Directive (EU) 2016/2102
Annex ZB	Relationship with Directive (EU) 2019/882
Annex ZC	Relationship with other Directives under Directive (EU) 2019/882

What are the key requirements of SIST EN 301 549 V4.1.1:2026?

SIST EN 301 549 V4.1.1:2026 combines general accessibility principles with product-specific requirements for web, software, hardware, real-time communication, and service information. For a buyer or project team, the most important point is that conformance is not only about a user interface looking accessible - it also covers how products behave, how accessibility features are exposed, and how the product is tested.

Functional performance comes first

Clause 4 sets functional performance criteria for use without vision, with limited vision, without hearing, with limited hearing, with no or limited vocal capability, with limited manipulation or strength, with limited reach, with limited cognition, language or learning, and to minimize photosensitive seizure triggers. Clause 4.2 also includes privacy.

In practice, this means the standard is not tied to one design pattern. A product can meet the requirements in different ways, but it must still be usable by people with those functional needs. Annex B shows how the later clauses support these criteria.

Generic requirements cover core interaction features

Clause 5 covers closed functionality, activation of accessibility features, biometrics, preservation of accessibility information during conversion, tactilely discernible operable parts, locking or toggle controls, key repeat, double-strike key acceptance, simultaneous user actions, and authoring tools.

These requirements matter when a device or application cannot simply rely on a keyboard, screen reader, or standard desktop setup. For example, the product may need a way to turn on accessibility features without depending on the very feature being enabled, and authoring tools need to help people create accessible content rather than introduce barriers.

Communication features have their own rules

Clause 6 addresses ICT supporting real-time bidirectional communication. It covers voice communication interoperability, audio bandwidth, Real-Time Text (RTT), caller ID, alternatives to voice-based services, video communication, and total conversation. It also sets out operational scenarios for communication clients, communication systems, roaming users, and emergency communications.

For implementation, this is the part to check if the product handles calls, chat, video, RTT, or emergency access. The requirements are there to keep text, voice, and video usable together and to make sure communication works across systems, including when a user is roaming or contacting emergency services.

Media accessibility features must be preserved and controllable

Clause 7 covers ICT with video capabilities. It addresses subtitle processing technology, audio description technology, and user control of audiovisual accessibility features.

In practice, this means subtitles and audio description are not treated as add-ons. The standard expects them to play back properly, stay synchronized, and remain available through processing or transport steps. Users also need control over the relevant accessibility features.

Hardware accessibility includes layout, reach, and feedback

Clause 8 applies the generic requirements to hardware and adds hardware-specific provisions. It covers speech volume, magnetic coupling, stationary ICT layout and reach, operable parts, tactile indication of speech mode, standard connections, colour on hardware, and contrast on hardware.

This matters for kiosks, terminals, appliances, and other physical ICT. The hardware must be reachable and operable, controls need to be discoverable, and visual or tactile cues cannot depend on colour alone.

Web, non-web documents, and software follow WCAG 2.2-based structures

Clauses 9, 10, and 11 cover web, non-web documents, and non-web software. They use the familiar perceivable, operable, understandable, and robust structure and include requirements for text alternatives, time-based media, keyboard access, focus order, input assistance, language, name-role-value, and status messages. Clause 9.6 sets the WCAG conformance requirements, and clause 9.7 covers user preferences for web pages.

For readers implementing products, the practical point is that accessibility is checked in a consistent way across web pages, documents, and software. The same themes repeat across the three clauses, which helps teams reuse design and test practices instead of building separate accessibility approaches for each format.

Product information, EPGs, and relay services are also covered

Clause 12 covers accessible information about products and services, accessibility and compatibility features, and Electronic Programme Guides (EPGs). Clause 13 covers relay service requirements and access to emergency services.

That means accessibility is not limited to the user interface. Users also need accessible product information, accessible service information, and guidance on availability of subtitles, audio description, spoken subtitles, and sign language interpretation in EPGs. Relay and emergency access are treated as part of the accessibility scope, not as optional extras.

Conformance is based on all applicable requirements

Clause 14 says conformance is achieved by meeting all applicable requirements. It also introduces special states and a one-mode principle, meaning the requirements are considered met if they are satisfied in at least one mode of operation that provides the same information and function.

Annex C is important here because it provides sufficient tests for conformance and defines the test outcomes used for assessment. In practice, this is what turns the standard from a design reference into a testable conformance document.

What terms does SIST EN 301 549 V4.1.1:2026 define?

• ICT (Information and Communication Technology) - the standard uses ICT as the umbrella term for the products and services it covers.
• RTT (Real-Time Text) - text communication used in live bidirectional communication, where text is presented as it is entered.
• EPG (Electronic Programme Guide) - a guide that presents media items and related accessibility information.
• API (Application Programming Interface) - the platform interface used by software to access documented platform accessibility services.
• Documented platform accessibility service - a defined subset of a platform API that exposes accessibility services for software to use.
• Context of use - the combination of users, goals and tasks, resources, and environment.
• Operable part - a hardware element that operates the ICT when touched or manipulated.
• Relay service invocation functions - the functions used to decide on relay use, establish communication, and connect media between users and a relay service.

Who uses SIST EN 301 549 V4.1.1:2026?

SIST EN 301 549 V4.1.1:2026 is used by people who design, build, test, buy, audit, or supervise ICT products and services. The scope explicitly names designers, developers, evaluators, manufacturers, market surveillance entities, procurers, and researchers.

In practice, it is useful for:

• product and UX teams designing accessible interfaces
• software and hardware developers implementing accessibility features
• test and conformity teams verifying accessibility claims
• procurement teams writing accessibility requirements into tenders
• market surveillance and compliance teams checking products and services
• organizations offering web, document, software, communication, relay, or emergency-access services

What changed in SIST EN 301 549 V4.1.1:2026 from the previous edition?

SIST EN 301 549 V4.1.1:2026 updates the requirements of clauses 9, 10, and 11 to align with the WCAG 2.2 recommendation. Annex A is also divided into two parts, A.1 and A.2, to support conformance with Directive (EU) 2016/2102 and Directive (EU) 2019/882.

The foreword also notes that the previous topic "Access to relay services" is now addressed throughout clause 13.1.

Which standards are used with SIST EN 301 549 V4.1.1:2026?

Referenced standard or specification	What it contributes
ETSI EG 201 013	Base terminology for terms used in the document
ISO 9241-11:2018	The definition of context of use
ISO/IEC 17007:2009	The level of detail expected for conformance testing descriptions
WCAG 2.2	The accessibility structure used for clauses 9, 10, and 11
WCAG2ICT	Guidance for applying WCAG concepts to non-web ICT
ETSI TS 103 479	Core elements for network-independent access to emergency services
IETF RFC 4103 and IETF RFC 9071	Real-Time Text handling used in emergency communication contexts
ISO/IEC TS 20071-23:2018	Visual presentation of audio information, including captions and subtitles

What does the SIST EN 301 549 V4.1.1:2026 document contain?

The document contains requirement clauses, informative explanations, annex mappings, and conformance test descriptions. Annex C is especially practical because it sets out sufficient tests and defines how results are recorded, including Pass, Fail, Not applicable, and a case where test assumptions are not met.

Clauses 6, 8, 9, 10, 11, 12, and 13 include detailed methods, scenarios, and accessibility conditions for communication, hardware, web content, non-web documents, non-web software, product and service information, and relay/emergency access. Annex B maps requirements to functional performance criteria, which helps teams trace a requirement back to the user need it supports.

Draft EN 301 549 V4.1.0 (2025-11)

HARMONISED EUROPEAN STANDARD
Accessibility requirements for ICT products and services

2 Draft EN 301 549 V4.1.0 (2025-11)

Reference
REN/HF-00301561
Keywords
accessibility, HF, ICT, product, service

CEN CENELEC ETSI
Rue de la science, 23 Rue de la science, 23 650 Route des Lucioles
B-1040 Brussels - BELGIUM B-1040 Brussels - BELGIUM F-06921 Sophia Antipolis Cedex - FRANCE

Tel: + 32 2 550 08 11 Tel.: [phone] Tel.: [phone]
Fax: + 32 2 550 08 19 Fax: [phone] Fax: [phone]

Siret N° 348 623 562 00017 - APE 7112B
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° w061004871

Important notice
The present document can be downloaded from the
ETSI Search & Browse Standards application.
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 on ETSI deliver repository.
Users should be aware that the present document may be revised or have its status changed,
this information is available in the Milestones listing.
If you find errors in the present document, please send your comments to
the relevant service listed under Committee Support Staff.
If you find a security vulnerability in the present document, please report it through our
Coordinated Vulnerability Disclosure (CVD) program.
Notice of disclaimer & limitation of liability
The information provided in the present deliverable is directed solely to professionals who have the appropriate degree of
experience to understand and interpret its content in accordance with generally accepted engineering or
other professional standard and applicable regulations.
No recommendation as to products and services or vendors is made or should be implied.
In no event shall ETSI be held liable for loss of profits or any other incidental or consequential damages.

Any software contained in this deliverable is provided "AS IS" with no warranties, express or implied, including but not
limited to, the warranties of merchantability, fitness for a particular purpose and non-infringement of intellectual property
rights and ETSI shall not be held liable in any event for any damages whatsoever (including, without limitation, damages
for loss of profits, business interruption, loss of information, or any other pecuniary loss) arising out of or related to the use
of or inability to use the software.
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.

© ETSI 2025.
© Comité Européen de Normalisation 2025.
© Comité Européen de Normalisation Electrotechnique 2025.
All rights reserved.
ETSI CEN CENELEC
3 Draft EN 301 549 V4.1.0 (2025-11)
Contents
Contents . 3
Intellectual Property Rights . 9
Foreword. 9
Modal verbs terminology . 10
Introduction . 10
1 Scope . 12
2 References . 12
2.1 Normative references . 12
2.2 Informative references . 12
3 Definition of terms, symbols and abbreviations . 16
3.1 Terms . 16
3.2 Symbols . 24
3.3 Abbreviations . 25
4 Functional performance . 26
4.1 Meeting Functional Performance Criteria . 26
4.2 Functional Performance Criteria . 26
4.2.1 Usage without vision . 26
4.2.2 Usage with limited vision . 26
4.2.3 Usage without perception of colour . 27
4.2.4 Usage without hearing . 27
4.2.5 Usage with limited hearing . 27
4.2.6 Usage with no or limited vocal capability . 27
4.2.7 Usage with limited manipulation or strength . 28
4.2.8 Usage with limited reach . 28
4.2.9 Minimize photosensitive seizure triggers . 28
4.2.10 Usage with limited cognition, language or learning . 28
4.2.11 Privacy . 29
5 Generic requirements . 29
5.1 Closed functionality . 29
5.1.1 Introduction (informative) . 29
5.1.2 General . 29
5.1.3 Non-visual access . 29
5.1.4 Functionality closed to text enlargement . 33
5.1.5 Visual output for auditory information. 33
5.1.6 Operation without keyboard interface . 33
5.1.7 Access without speech . 34
5.1.8 Identify input purpose (closed functionality) . 34
5.2 Activation of accessibility features . 34
5.3 Biometrics . 34
5.4 Preservation of accessibility information during conversion . 34
5.5 Tactilely discernible operable parts . 34
5.6 Locking or toggle controls . 35
5.6.1 Tactile or auditory status . 35
5.6.2 Visual status . 35
5.7 Key repeat . 35
5.8 Double-strike key acceptance . 35
5.9 Simultaneous user actions . 36
5.10 Authoring tools . 36
5.10.0 General (informative) . 36
5.10.1 Content technology . 36
5.10.2 Accessible content creation . 36
5.10.3 Preservation of accessibility information in transformations . 36
5.10.4 Repair assistance . 36
ETSI CEN CENELEC
4 Draft EN 301 549 V4.1.0 (2025-11)
5.10.5 Templates . 37
6 ICT supporting real-time bidirectional communication . 37
6.0 Accessible real-time bidirectional communication operational scenarios . 37
6.0.1 Rationale for scenarios (informative) . 37
6.0.2 Communication client . 37
6.0.3 Communication system . 37
6.0.4 System connecting to another communication system . 38
6.0.5 System with roaming visiting client . 38
6.0.6 Client in emergency communications . 38
6.0.7 Emergency communications . 38
6.0.8 System with roaming visiting client in an emergency . 38
6.0.9 System with client in emergency visiting another country . 38
6.1 Real-time bidirection voice communication . 39
6.1.1 Voice communication interoperability . 39
6.1.2 Audio bandwidth for capture and presentation for voice communication . 40
6.1.3 Audio presentation in attached listening devices for voice communication (recommendation) . 40
6.1.4 Synchronization of subtitles (recommendation) . 40
6.2 Real-Time Text (RTT) . 40
6.2.1 RTT provision . 40
6.2.2 Display of RTT . 41
6.2.3 DTMF touch-tone generation during RTT operations . 42
6.2.4 RTT responsiveness . 42
6.2.5 Adding and erasing of RTT input . 43
6.2.6 Processing rate of RTT . 43
6.2.7 Character representation . 43
6.2.8 RTT input methods . 44
6.2.9 RTT media establishment and use . 44
6.2.10 RTT interoperability . 44
6.3 Caller ID . 45
6.4 Alternatives to voice-based services . 46
6.5 Video communication . 46
6.5.1 General (informative) . 46
6.5.2 Resolution . 46
6.5.3 Frame rate . 47
6.5.4 Synchronization between audio and video . 47
6.5.5 Indicator of audio with video . 47
6.5.6 Speaker identification with video (sign language) communication. 47
6.6 Alternatives to video-based services (recommendation) . 47
6.7 Total conversation . 48
6.7.1 Total conversation provision . 48
6.7.2 Total conversation interoperability . 48
7 ICT with video capabilities . 48
7.1 Subtitle processing technology . 48
7.1.1 Subtitle playback . 48
7.1.2 Subtitle synchronization . 48
7.1.3 Preservation of subtitles . 49
7.1.4 Subtitle characteristics. 49
7.1.5 Spoken subtitles . 49
7.2 Audio description technology . 49
7.2.1 Audio description playback . 49
7.2.2 Audio description synchronization . 49
7.2.3 Preservation of audio description . 50
7.3 User control of audiovisual accessibility features . 50
8 Hardware . 50
8.1 General . 50
8.2 Hardware products with speech output . 51
8.2.1 Speech volume . 51
8.2.2 Magnetic coupling . 51
8.3 Stationary hardware ICT . 51
8.3.1 General (informative) . 51
ETSI CEN CENELEC
5 Draft EN 301 549 V4.1.0 (2025-11)
8.3.2 Forward or side reach . 52
8.3.3 Forward reach. 52
8.3.4 Side reach . 55
8.3.5 Floor characteristics . 57
8.3.6 Approach . 58
8.3.7 Heights and visibility of displays screens . 60
8.3.8 Installation instructions . 60
8.4 Operable parts . 60
8.4.1 Numeric keys . 60
8.4.2 Operation of operable parts . 61
8.4.3 Keys, tickets and fare cards . 61
8.5 Tactile indication of speech mode . 61
8.6 Standard connections . 61
8.7 Colour on hardware . 61
8.8 Contrast on hardware . 61
9 Web . 62
9.0 General (informative) . 62
9.1 Perceivable . 63
9.1.1 Text alternatives . 63
9.1.2 Time-based media . 63
9.1.3 Adaptable . 64
9.1.4 Distinguishable . 64
9.2 Operable . 65
9.2.1 Keyboard accessible . 65
9.2.2 Enough time . 65
9.2.3 Seizures and physical reactions . 66
9.2.4 Navigable . 66
9.2.5 Input modalities . 67
9.3 Understandable . 67
9.3.1 Readable . 67
9.3.2 Predictable . 68
9.3.3 Input assistance . 68
9.4 Robust . 69
9.4.1 Compatible . 69
9.5 WCAG 2.2 AAA Success Criteria (informative) . 69
9.6 WCAG conformance requirements . 70
9.7 User preferences for web pages . 71
10 Non-web documents . 71
10.0 General (informative) . 71
10.1 Perceivable . 72
10.1.1 Text alternatives . 72
10.1.2 Time-based media . 72
10.1.3 Adaptable . 74
10.1.4 Distinguishable . 74
10.2 Operable . 77
10.2.1 Keyboard accessible . 77
10.2.2 Enough time . 78
10.2.3 Seizures and physical reactions . 79
10.2.4 Navigable . 79
10.2.5 Input modalities . 81
10.3 Understandable . 82
10.3.1 Readable . 82
10.3.2 Predictable . 83
10.3.3 Input assistance . 84
10.4 Robust . 85
10.4.1 Compatible . 85
10.5 Subtitle positioning (recommendation) . 86
10.6 Audio description timing (recommendation) . 86
10.7 User preferences for non-web documents . 86
11 Non-web software . 87
ETSI CEN CENELEC
6 Draft EN 301 549 V4.1.0 (2025-11)
11.0 General (informative) . 87
11.1 Perceivable . 88
11.1.1 Text alternatives . 88
11.1.2 Time-based media . 88
11.1.3 Adaptable . 89
11.1.4 Distinguishable . 90
11.2 Operable . 93
11.2.1 Keyboard accessible . 93
11.2.2 Enough time . 94
11.2.3 Seizures and physical reactions . 95
11.2.4 Navigable . 96
11.2.5 Input modalities . 97
11.3 Understandable . 99
11.3.1 Readable . 99
11.3.2 Predictable . 99
11.3.3 Input assistance . 100
11.4 Robust . 102
11.4.1 Compatible . 102
11.5 Interoperability with keyboards and assistive technology . 103
11.5.1 Closed functionality (informative) . 103
11.5.2 Accessibility services . 103
11.6 Documented accessibility features . 107
11.6.1 User control of accessibility features . 107
11.6.2 No disruption of accessibility features . 107
11.7 User preferences . 107
12 Information about products and services . 107
12.1 Accessible information about products . 107
12.2 Accessible information about services . 107
12.3 Accessibility and compatibility features . 108
12.4 Electronic program guides . 108
12.5 Electronic program guide display . 108
13 ICT providing relay or emergency service access . 108
13.1 Relay services requirements . 108
13.1.1 General (informative) . 108
13.1.2 Relay service access . 110
13.1.3 Relay service requirements . 111
13.2 Void . 112
13.3 Access to emergency services (informative). 112
14 Conformance . 112
14.1 Achieving conformance (informative) . 112
14.2 Special states . 112
14.3 One mode . 113
Annex A (informative): ICT conformance evaluation . 114
A.1 Conformance with Directive 2016/2102 on the accessibility of the websites and mobile applications of
public sector bodies . 114
A.2 Conformance with Directive 2019/882 on the accessibility requirements of products and services . 114
A.2.0 The meaning of conformance with Directive 2019/882 . 114
A.2.1 Where the ICT is, or includes, a web page . 115
A.2.2 Where the ICT is, or includes, a non-web document . 116
A.2.3 Where the ICT is, or includes, non-web software that provides a user interface . 118
A.2.4 Where the ICT is, or includes, hardware . 122
A.2.5 All ICT . 123
Annex B (informative): Relationship between requirements and functional performance criteria . 129
B.1 Relationships between clauses 5 to 13 and the functional performance criteria . 129
B.2 Interpretation of Table B.2 . 139
B.2.0 General . 139
B.2.1 Example . 139
Annex C (normative): Determination of conformance . 141
C.1 Introduction. 141
ETSI CEN CENELEC
7 Draft EN 301 549 V4.1.0 (2025-11)
C.2 Empty clause . 141
C.3 Empty clause . 141
C.4 Functional performance . 141
C.4.1 Meeting Functional Performance Criteria . 141
C.4.2 Functional Performance Criteria . 141
C.5 Generic requirements . 143
C.5.1 Closed functionality . 143
C.5.2 Activation of accessibility features . 149
C.5.3 Biometrics . 149
C.5.4 Preservation of accessibility information during conversion . 149
C.5.5 Tactilely discernible operable parts . 149
C.5.6 Locking or toggle controls . 149
C.5.7 Key repeat . 150
C.5.8 Double-strike key acceptance . 150
C.5.9 Simultaneous user actions . 150
C.5.10 Authoring tools. 150
C.6 ICT supporting real-time bidirectional communication . 152
C.6.0 Accessible real-time bidirectional communication operational scenarios . 152
C.6.1 Real-time bidirectional voice communication . 154
C.6.2 Real-Time Text (RTT) . 155
C.6.3 Caller ID . 164
C.6.4 Alternatives to voice-based services . 164
C.6.5 Video communication . 164
C.6.6 Alternatives to video-based services (recommendation) . 166
C.6.7 Total conversation . 167
C.7 ICT with video capabilities . 167
C.7.1 Subtitle processing technology . 167
C.7.2 Audio description technology .
...

Final draft EN 301 549 V4.1.0 (2026-06)

HARMONISED EUROPEAN STANDARD
Accessibility requirements for ICT products and services

2 Final draft EN 301 549 V4.1.0 (2026-06)

Reference
REN/HF-00301561
Keywords
accessibility, HF, ICT, product, service

CEN CENELEC ETSI
Rue de la science, 23 Rue de la science, 23 650 Route des Lucioles
B-1040 Brussels - BELGIUM B-1040 Brussels - BELGIUM F-06921 Sophia Antipolis Cedex - FRANCE

Tel: + 32 2 550 08 11 Tel.: [phone] Tel.: [phone]
Fax: + 32 2 550 08 19 Fax: [phone] Fax: [phone]

Siret N° 348 623 562 00017 - APE 7112B
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° w061004871

Important notice
The present document can be downloaded from the
ETSI Search & Browse Standards application.
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 on ETSI deliver repository.
Users should be aware that the present document may be revised or have its status changed,
this information is available in the Milestones listing.
If you find errors in the present document, please send your comments to
the relevant service listed under Committee Support Staff.
If you find a security vulnerability in the present document, please report it through our
Coordinated Vulnerability Disclosure (CVD) program.
Notice of disclaimer & limitation of liability
The information provided in the present deliverable is directed solely to professionals who have the appropriate degree of
experience to understand and interpret its content in accordance with generally accepted engineering or
other professional standard and applicable regulations.
No recommendation as to products and services or vendors is made or should be implied.
In no event shall ETSI be held liable for loss of profits or any other incidental or consequential damages.

Any software contained in this deliverable is provided "AS IS" with no warranties, express or implied, including but not
limited to, the warranties of merchantability, fitness for a particular purpose and non-infringement of intellectual property
rights and ETSI shall not be held liable in any event for any damages whatsoever (including, without limitation, damages
for loss of profits, business interruption, loss of information, or any other pecuniary loss) arising out of or related to the use
of or inability to use the software.
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.

© ETSI 2026.
© Comité Européen de Normalisation 2026.
© Comité Européen de Normalisation Electrotechnique 2026.
All rights reserved.
ETSI CEN CENELEC
3 Final draft EN 301 549 V4.1.0 (2026-06)
Contents
Contents . 3
Intellectual Property Rights . 9
Foreword. 9
Modal verbs terminology . 10
Introduction . 10
1 Scope . 12
2 References . 12
2.1 Normative references . 12
2.2 Informative references . 12
3 Definition of terms, symbols and abbreviations . 16
3.1 Terms . 16
3.2 Symbols . 25
3.3 Abbreviations . 25
4 Functional performance . 26
4.1 Meeting Functional Performance Criteria . 26
4.2 Functional Performance Criteria . 27
4.2.1 Usage without vision . 27
4.2.2 Usage with limited vision . 27
4.2.3 Usage without perception of colour . 27
4.2.4 Usage without hearing . 27
4.2.5 Usage with limited hearing . 28
4.2.6 Usage with no or limited vocal capability . 28
4.2.7 Usage with limited manipulation or strength . 28
4.2.8 Usage with limited reach . 28
4.2.9 Minimize photosensitive seizure triggers . 29
4.2.10 Usage with limited cognition, language or learning . 29
4.2.11 Privacy . 29
5 Generic requirements . 29
5.1 Closed functionality . 29
5.1.1 Introduction (informative) . 29
5.1.2 General . 30
5.1.3 Non-visual access . 30
5.1.4 Functionality closed to text enlargement . 33
5.1.5 Visual output for auditory information. 34
5.1.6 Operation without keyboard interface . 34
5.1.7 Access without speech . 34
5.1.8 Identify input purpose (closed functionality) . 35
5.2 Activation of accessibility features . 35
5.3 Biometrics . 35
5.4 Preservation of accessibility information during conversion . 35
5.5 Tactilely discernible operable parts . 35
5.6 Locking or toggle controls . 36
5.6.1 Tactile or auditory status . 36
5.6.2 Visual status . 36
5.7 Key repeat . 36
5.8 Double-strike key acceptance . 37
5.9 Simultaneous user actions . 37
5.10 Authoring tools . 37
5.10.0 General (informative) . 37
5.10.1 Content technology . 37
5.10.2 Accessible content creation . 37
5.10.3 Preservation of accessibility information in transformations . 37
ETSI CEN CENELEC
4 Final draft EN 301 549 V4.1.0 (2026-06)
5.10.4 Repair assistance . 38
5.10.5 Templates . 38
6 ICT supporting real-time bidirectional communication . 38
6.0 Accessible real-time bidirectional communication operational scenarios . 38
6.0.1 Rationale for scenarios (informative) . 38
6.0.2 Communication client . 38
6.0.3 Communication system . 39
6.0.4 System connecting to another communication system . 39
6.0.5 System with roaming visiting client . 39
6.0.6 Client in emergency communications . 39
6.0.7 Emergency communications . 39
6.0.8 System with roaming visiting client in an emergency . 39
6.0.9 System with client in emergency visiting another country . 40
6.1 Real-time bidirectional voice communication . 40
6.1.1 Voice communication interoperability . 40
6.1.2 Audio bandwidth for capture and presentation for voice communication . 41
6.1.3 Audio presentation in attached listening devices for voice communication (recommendation) . 41
6.1.4 Synchronization of subtitles (recommendation) . 41
6.2 Real-Time Text (RTT) . 41
6.2.1 RTT provision . 41
6.2.2 Display of RTT . 42
6.2.3 DTMF touch-tone generation during RTT operations . 43
6.2.4 RTT responsiveness . 44
6.2.5 Adding and erasing of RTT input . 44
6.2.6 Processing rate of RTT . 44
6.2.7 Character representation . 45
6.2.8 RTT input methods . 45
6.2.9 RTT media establishment and use . 45
6.2.10 RTT interoperability . 45
6.3 Caller ID . 47
6.4 Alternatives to voice-based services . 47
6.5 Video communication . 47
6.5.1 General (informative) . 47
6.5.2 Resolution . 48
6.5.3 Frame rate . 48
6.5.4 Synchronization between audio and video . 48
6.5.5 Indicator of audio with video . 48
6.5.6 Indication of all active communication participants . 48
6.6 Alternatives to video-based services (recommendation) . 49
6.7 Total conversation . 49
6.7.1 Total conversation provision . 49
6.7.2 Total conversation interoperability . 49
7 ICT with video capabilities . 50
7.1 Subtitle processing technology . 50
7.1.1 Subtitle playback . 50
7.1.2 Subtitle synchronization . 50
7.1.3 Preservation of subtitles . 50
7.1.4 Subtitle characteristics. 50
7.1.5 Spoken subtitles . 51
7.2 Audio description technology . 51
7.2.1 Audio description playback . 51
7.2.2 Audio description synchronization . 51
7.2.3 Preservation of audio description . 51
7.3 User control of audiovisual accessibility features . 51
8 Hardware . 52
8.1 General . 52
8.2 Hardware products with speech output . 52
8.2.1 Speech volume . 52
8.2.2 Magnetic coupling . 53
8.3 Stationary ICT . 53
ETSI CEN CENELEC
5 Final draft EN 301 549 V4.1.0 (2026-06)
8.3.1 General (informative) . 53
8.3.2 Display screen location . 54
8.3.3 Presentation of information necessary for the operation of stationary ICT . 54
8.3.4 Legibility of display screens (informative) . 54
8.3.5 Control location (vertical) . 54
8.3.6 Control location (horizontal) . 55
8.3.7 Reach depth . 55
8.3.8 Forward or side reach (informative) . 55
8.3.9 Forward reach. 56
8.3.10 Side reach . 56
8.3.11 Free space underneath stationary ICT with or without an obstruction . 58
8.3.12 Floor characteristics (informative) . 59
8.3.13 Approach (informative) . 59
8.3.14 Installation instructions . 59
8.4 Operable parts . 59
8.4.1 Numeric keys . 59
8.4.2 Operation of operable parts . 60
8.4.3 Keys, tickets and cards . 60
8.5 Tactile indication of speech mode . 60
8.6 Standard connections . 60
8.7 Colour on hardware . 60
8.8 Contrast on hardware . 61
9 Web . 61
9.0 General (informative) . 61
9.1 Perceivable . 62
9.1.1 Text alternatives . 62
9.1.2 Time-based media . 62
9.1.3 Adaptable . 63
9.1.4 Distinguishable . 63
9.2 Operable . 65
9.2.1 Keyboard accessible . 65
9.2.2 Enough time . 65
9.2.3 Seizures and physical reactions . 65
9.2.4 Navigable . 65
9.2.5 Input modalities . 66
9.3 Understandable . 67
9.3.1 Readable . 67
9.3.2 Predictable . 67
9.3.3 Input assistance . 68
9.4 Robust . 68
9.4.1 Compatible . 68
9.5 WCAG 2.2 AAA Success Criteria (informative) . 69
9.6 WCAG conformance requirements . 69
9.7 User preferences for web pages . 70
10 Non-web documents . 71
10.0 General (informative) . 71
10.1 Perceivable . 72
10.1.1 Text alternatives . 72
10.1.2 Time-based media . 72
10.1.3 Adaptable . 73
10.1.4 Distinguishable . 74
10.2 Operable . 76
10.2.1 Keyboard accessible . 76
10.2.2 Enough time . 77
10.2.3 Seizures and physical reactions . 78
10.2.4 Navigable . 78
10.2.5 Input modalities . 80
10.3 Understandable . 81
10.3.1 Readable . 81
10.3.2 Predictable . 82
ETSI CEN CENELEC
6 Final draft EN 301 549 V4.1.0 (2026-06)
10.3.3 Input assistance . 83
10.4 Robust . 85
10.4.1 Compatible . 85
10.5 Subtitle positioning (recommendation) . 85
10.6 Audio description timing (recommendation) . 85
10.7 User preferences for non-web documents . 85
11 Non-web software . 86
11.0 General (informative) . 86
11.1 Perceivable . 87
11.1.1 Text alternatives . 87
11.1.2 Time-based media . 87
11.1.3 Adaptable . 89
11.1.4 Distinguishable . 90
11.2 Operable . 92
11.2.1 Keyboard accessible . 92
11.2.2 Enough time . 94
11.2.3 Seizures and physical reactions . 95
11.2.4 Navigable . 95
11.2.5 Input modalities . 96
11.3 Understandable . 98
11.3.1 Readable . 98
11.3.2 Predictable . 98
11.3.3 Input assistance . 99
11.4 Robust . 101
11.4.1 Compatible . 101
11.5 Interoperability with keyboards and assistive technology . 102
11.5.1 Closed functionality (informative) . 102
11.5.2 Accessibility services . 102
11.6 Documented accessibility features . 106
11.6.1 User control of accessibility features . 106
11.6.2 No disruption of accessibility features . 106
11.7 User preferences . 106
12 Information about products and services . 106
12.1 Accessible information about products . 106
12.2 Accessible information about services . 107
12.3 Accessibility and compatibility features . 107
12.4 Electronic program guides . 107
12.5 Electronic program guide display . 107
13 ICT providing relay or emergency service access . 108
13.1 Relay services requirements . 108
13.1.1 General (informative) . 108
13.1.2 Relay service access . 109
13.1.3 Relay service requirements . 110
13.2 Void . 110
13.3 Access to emergency services (informative). 111
14 Conformance . 111
14.1 Achieving conformance (informative) . 111
14.2 Special states . 111
14.3 One mode . 112
Annex A (informative): ICT conformance evaluation . 113
A.1 Conformance with Directive (EU) 2016/2102 on the accessibility of the websites and mobile
applications of public sector bodies . 113
A.2 Conformance with Directive (EU) 2019/882 on the accessibility requirements of products and services . 113
A.2.0 The meaning of conformance with Directive (EU) 2019/882 . 113
A.2.1 Where the ICT is, or includes, a web page . 114
A.2.2 Where the ICT is, or includes, a non-web document . 115
A.2.3 Where the ICT is, or includes, non-web software that provides a user interface . 117
A.2.4 Where the ICT is, or includes, hardware . 121
A.2.5 All ICT . 123
ETSI CEN CENELEC
7 Final draft EN 301 549 V4.1.0 (2026-06)
Annex B (informative): Relationship between requirements and functional performance criteria . 129
B.1 Relationships between clauses 5 to 13 and the functional performance criteria . 129
B.2 Interpretation of Table B.2 . 139
B.2.0 General . 139
B.2.1 Example . 139
Annex C (normative): Determination of conformance . 141
C.1 Introduction. 141
C.2 Empty clause . 141
C.3 Empty clause . 141
C.4 Functional performance . 141
C.4.1 Meeting Functional Performance Criteria . 141
C.4.2 Functional Performance Criteria . 141
C.5 Generic requirements . 143
C.5.1 Closed functionality . 143
C.5.2 Activation of accessibility features . 149
C.5.3 Biometrics . 149
C.5.4 Preservation of accessibility information during conversion . 149
C.5.5 Tactilely discernible operable parts . 149
C.5.6 Locking or toggle controls . 149
C.5.7 Key repeat . 150
C.5.8 Double-strike key acceptance . 150
C.5.9 Simultaneous user actions . 150
C.5.10 Authoring tools. 150
C.6 ICT supporting real-time bidirectional communication . 152
C.6.0 Accessible real-time bidirectional communication operational scenarios . 152
C.6.1 Real-time bidirectional voice communication . 154
C.6.2 Real-Time Text (RTT) . 155
C.6.3 Caller ID .
...

EN 301 549 V4.1.1 (2026-09)
HARMONISED EUROPEAN STANDARD
Accessibility requirements for ICT products and services

2 EN 301 549 V4.1.1 (2026-09)
Reference
REN/HF-00301561
Keywords
accessibility, HF, ICT, product, service

CEN CENELEC ETSI
Rue de la science, 23 Rue de la science, 23 650 Route des Lucioles
B-1040 Brussels - BELGIUM B-1040 Brussels - BELGIUM F-06921 Sophia Antipolis Cedex - FRANCE

Tel: + 32 2 550 08 11 Tel.: [phone] Tel.: [phone]
Fax: + 32 2 550 08 19 Fax: [phone] Fax: [phone]

Siret N° 348 623 562 00017 - APE 7112B
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° w061004871

Important notice
The present document can be downloaded from the
ETSI Search & Browse Standards application.
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 on ETSI deliver repository.
Users should be aware that the present document may be revised or have its status changed,
this information is available in the Milestones listing.
If you find errors in the present document, please send your comments to
the relevant service listed under Committee Support Staff.
If you find a security vulnerability in the present document, please report it through our
Coordinated Vulnerability Disclosure (CVD) program.
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The information provided in the present deliverable is directed solely to professionals who have the appropriate degree of
experience to understand and interpret its content in accordance with generally accepted engineering or
other professional standard and applicable regulations.
No recommendation as to products and services or vendors is made or should be implied.
In no event shall ETSI be held liable for loss of profits or any other incidental or consequential damages.

Any software contained in this deliverable is provided "AS IS" with no warranties, express or implied, including but not
limited to, the warranties of merchantability, fitness for a particular purpose and non-infringement of intellectual property
rights and ETSI shall not be held liable in any event for any damages whatsoever (including, without limitation, damages
for loss of profits, business interruption, loss of information, or any other pecuniary loss) arising out of or related to the use
of or inability to use the software.
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© ETSI 2026.
© Comité Européen de Normalisation 2026.
© Comité Européen de Normalisation Electrotechnique 2026.
All rights reserved.
ETSI CEN CENELEC
3 EN 301 549 V4.1.1 (2026-09)
Contents
Contents . 3
Intellectual Property Rights . 9
Foreword. 9
Modal verbs terminology . 10
Introduction . 10
1 Scope . 12
2 References . 12
2.1 Normative references . 12
2.2 Informative references . 12
3 Definition of terms, symbols and abbreviations . 16
3.1 Terms . 16
3.2 Symbols . 25
3.3 Abbreviations . 25
4 Functional performance . 26
4.1 Meeting Functional Performance Criteria . 26
4.2 Functional Performance Criteria . 27
4.2.1 Usage without vision . 27
4.2.2 Usage with limited vision . 27
4.2.3 Usage without perception of colour . 27
4.2.4 Usage without hearing . 27
4.2.5 Usage with limited hearing . 28
4.2.6 Usage with no or limited vocal capability . 28
4.2.7 Usage with limited manipulation or strength . 28
4.2.8 Usage with limited reach . 28
4.2.9 Minimize photosensitive seizure triggers . 29
4.2.10 Usage with limited cognition, language or learning . 29
4.2.11 Privacy . 29
5 Generic requirements . 29
5.1 Closed functionality . 29
5.1.1 Introduction (informative) . 29
5.1.2 General . 30
5.1.3 Non-visual access . 30
5.1.4 Functionality closed to text enlargement . 34
5.1.5 Visual output for auditory information. 34
5.1.6 Operation without keyboard interface . 34
5.1.7 Access without speech . 35
5.1.8 Identify input purpose (closed functionality) . 35
5.2 Activation of accessibility features . 35
5.3 Biometrics . 35
5.4 Preservation of accessibility information during conversion . 35
5.5 Tactilely discernible operable parts . 35
5.6 Locking or toggle controls . 36
5.6.1 Tactile or auditory status . 36
5.6.2 Visual status . 36
5.7 Key repeat . 36
5.8 Double-strike key acceptance . 37
5.9 Simultaneous user actions . 37
5.10 Authoring tools . 37
5.10.0 General (informative) . 37
5.10.1 Content technology . 37
5.10.2 Accessible content creation . 37
5.10.3 Preservation of accessibility information in transformations . 37
ETSI CEN CENELEC
4 EN 301 549 V4.1.1 (2026-09)
5.10.4 Repair assistance . 38
5.10.5 Templates . 38
6 ICT supporting real-time bidirectional communication . 38
6.0 Accessible real-time bidirectional communication operational scenarios . 38
6.0.1 Rationale for scenarios (informative) . 38
6.0.2 Communication client . 38
6.0.3 Communication system . 39
6.0.4 System connecting to another communication system . 39
6.0.5 System with roaming visiting client . 39
6.0.6 Client in emergency communications . 39
6.0.7 Emergency communications . 39
6.0.8 System with roaming visiting client in an emergency . 39
6.0.9 System with client in emergency visiting another country . 40
6.1 Real-time bidirectional voice communication . 40
6.1.1 Voice communication interoperability . 40
6.1.2 Audio bandwidth for capture and presentation for voice communication . 41
6.1.3 Audio presentation in attached listening devices for voice communication (recommendation) . 41
6.1.4 Synchronization of subtitles (recommendation) . 41
6.2 Real-Time Text (RTT) . 42
6.2.1 RTT provision . 42
6.2.2 Display of RTT . 42
6.2.3 DTMF touch-tone generation during RTT operations . 44
6.2.4 RTT responsiveness . 44
6.2.5 Adding and erasing of RTT input . 44
6.2.6 Processing rate of RTT . 45
6.2.7 Character representation . 45
6.2.8 RTT input methods . 45
6.2.9 RTT media establishment and use . 45
6.2.10 RTT interoperability . 46
6.3 Caller ID . 47
6.4 Alternatives to voice-based services . 47
6.5 Video communication . 47
6.5.1 General (informative) . 47
6.5.2 Resolution . 48
6.5.3 Frame rate . 48
6.5.4 Synchronization between audio and video . 48
6.5.5 Indicator of audio with video . 48
6.5.6 Indication of all active communication participants . 49
6.6 Alternatives to video-based services (recommendation) . 49
6.7 Total conversation . 49
6.7.1 Total conversation provision . 49
6.7.2 Total conversation interoperability . 49
7 ICT with video capabilities . 50
7.1 Subtitle processing technology . 50
7.1.1 Subtitle playback . 50
7.1.2 Subtitle synchronization . 50
7.1.3 Preservation of subtitles . 50
7.1.4 Subtitle characteristics. 50
7.1.5 Spoken subtitles . 51
7.2 Audio description technology . 51
7.2.1 Audio description playback . 51
7.2.2 Audio description synchronization . 51
7.2.3 Preservation of audio description . 51
7.3 User control of audiovisual accessibility features . 51
8 Hardware . 52
8.1 General . 52
8.2 Hardware products with speech output . 52
8.2.1 Speech volume . 52
8.2.2 Magnetic coupling . 53
8.3 Stationary ICT . 53
ETSI CEN CENELEC
5 EN 301 549 V4.1.1 (2026-09)
8.3.1 General (informative) . 53
8.3.2 Display screen location . 54
8.3.3 Presentation of information necessary for the operation of stationary ICT . 54
8.3.4 Legibility of display screens (informative) . 54
8.3.5 Control location (vertical) . 54
8.3.6 Control location (horizontal) . 55
8.3.7 Reach depth . 55
8.3.8 Forward or side reach (informative) . 55
8.3.9 Forward reach. 56
8.3.10 Side reach . 56
8.3.11 Free space underneath stationary ICT with or without an obstruction . 58
8.3.12 Floor characteristics (informative) . 59
8.3.13 Approach (informative) . 59
8.3.14 Installation instructions . 59
8.4 Operable parts . 59
8.4.1 Numeric keys . 59
8.4.2 Operation of operable parts . 60
8.4.3 Keys, tickets and cards . 60
8.5 Tactile indication of speech mode . 60
8.6 Standard connections . 60
8.7 Colour on hardware . 60
8.8 Contrast on hardware . 61
9 Web . 61
9.0 General (informative) . 61
9.1 Perceivable . 62
9.1.1 Text alternatives . 62
9.1.2 Time-based media . 62
9.1.3 Adaptable . 63
9.1.4 Distinguishable . 63
9.2 Operable . 65
9.2.1 Keyboard accessible . 65
9.2.2 Enough time . 65
9.2.3 Seizures and physical reactions . 65
9.2.4 Navigable . 65
9.2.5 Input modalities . 66
9.3 Understandable . 67
9.3.1 Readable . 67
9.3.2 Predictable . 67
9.3.3 Input assistance . 68
9.4 Robust . 68
9.4.1 Compatible . 68
9.5 WCAG 2.2 AAA Success Criteria (informative) . 69
9.6 WCAG conformance requirements . 69
9.7 User preferences for web pages . 70
10 Non-web documents . 71
10.0 General (informative) . 71
10.1 Perceivable . 72
10.1.1 Text alternatives . 72
10.1.2 Time-based media . 72
10.1.3 Adaptable . 73
10.1.4 Distinguishable . 74
10.2 Operable . 76
10.2.1 Keyboard accessible . 76
10.2.2 Enough time . 77
10.2.3 Seizures and physical reactions . 78
10.2.4 Navigable . 78
10.2.5 Input modalities . 80
10.3 Understandable . 81
10.3.1 Readable . 81
10.3.2 Predictable . 82
ETSI CEN CENELEC
6 EN 301 549 V4.1.1 (2026-09)
10.3.3 Input assistance . 83
10.4 Robust . 85
10.4.1 Compatible . 85
10.5 Subtitle positioning (recommendation) . 85
10.6 Audio description timing (recommendation) . 85
10.7 User preferences for non-web documents . 85
11 Non-web software . 86
11.0 General (informative) . 86
11.1 Perceivable . 87
11.1.1 Text alternatives . 87
11.1.2 Time-based media . 87
11.1.3 Adaptable . 89
11.1.4 Distinguishable . 90
11.2 Operable . 92
11.2.1 Keyboard accessible . 92
11.2.2 Enough time . 94
11.2.3 Seizures and physical reactions . 95
11.2.4 Navigable . 95
11.2.5 Input modalities . 96
11.3 Understandable . 98
11.3.1 Readable . 98
11.3.2 Predictable . 98
11.3.3 Input assistance . 99
11.4 Robust . 101
11.4.1 Compatible . 101
11.5 Interoperability with keyboards and assistive technology . 102
11.5.1 Closed functionality (informative) . 102
11.5.2 Accessibility services . 102
11.6 Documented accessibility features . 106
11.6.1 User control of accessibility features . 106
11.6.2 No disruption of accessibility features . 106
11.7 User preferences . 106
12 Information about products and services . 106
12.1 Accessible information about products . 106
12.2 Accessible information about services . 107
12.3 Accessibility and compatibility features . 107
12.4 Electronic program guides . 107
12.5 Electronic program guide display . 107
13 ICT providing relay or emergency service access . 108
13.1 Relay services requirements . 108
13.1.1 General (informative) . 108
13.1.2 Relay service access . 109
13.1.3 Relay service requirements . 110
13.2 Void . 110
13.3 Access to emergency services (informative). 111
14 Conformance . 111
14.1 Achieving conformance (informative) . 111
14.2 Special states . 111
14.3 One mode . 112
Annex A (informative): ICT conformance evaluation . 113
A.1 Conformance with Directive (EU) 2016/2102 on the accessibility of the websites and mobile
applications of public sector bodies . 113
A.2 Conformance with Directive (EU) 2019/882 on the accessibility requirements of products and services . 113
A.2.0 The meaning of conformance with Directive (EU) 2019/882 . 113
A.2.1 Where the ICT is, or includes, a web page . 114
A.2.2 Where the ICT is, or includes, a non-web document . 115
A.2.3 Where the ICT is, or includes, non-web software that provides a user interface . 117
A.2.4 Where the ICT is, or includes, hardware . 121
A.2.5 All ICT . 123
ETSI CEN CENELEC
7 EN 301 549 V4.1.1 (2026-09)
Annex B (informative): Relationship between requirements and functional performance criteria . 129
B.1 Relationships between clauses 5 to 13 and the functional performance criteria . 129
B.2 Interpretation of Table B.2 . 139
B.2.0 General . 139
B.2.1 Example . 139
Annex C (normative): Determination of conformance . 141
C.1 Introduction. 141
C.2 Empty clause . 141
C.3 Empty clause . 141
C.4 Functional performance . 141
C.4.1 Meeting Functional Performance Criteria . 141
C.4.2 Functional Performance Criteria . 141
C.5 Generic requirements . 143
C.5.1 Closed functionality . 143
C.5.2 Activation of accessibility features . 149
C.5.3 Biometrics . 149
C.5.4 Preservation of accessibility information during conversion . 149
C.5.5 Tactilely discernible operable parts . 149
C.5.6 Locking or toggle controls . 149
C.5.7 Key repeat . 150
C.5.8 Double-strike key acceptance . 150
C.5.9 Simultaneous user actions . 150
C.5.10 Authoring tools. 150
C.6 ICT supporting real-time bidirectional communication . 152
C.6.0 Accessible real-time bidirectional communication operational scenarios . 152
C.6.1 Real-time bidirectional voice communic
...

SLOVENSKI STANDARD
01-november-2026
Zahteve za dostopnost izdelkov in storitev IKT
Accessibility requirements for ICT products and services
Accessibility requirements for ICT products and services
Ta slovenski standard je istoveten z: ETSI EN 301 549 V4.1.1 (2026-09)
ICS:
35.020 Informacijska tehnika in Information technology (IT) in
tehnologija na splošno general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 301 549 V4.1.1 (2026-09)
HARMONISED EUROPEAN STANDARD
Accessibility requirements for ICT products and services

2 EN 301 549 V4.1.1 (2026-09)
Reference
REN/HF-00301561
Keywords
accessibility, HF, ICT, product, service

CEN CENELEC ETSI
Rue de la science, 23 Rue de la science, 23 650 Route des Lucioles
B-1040 Brussels - BELGIUM B-1040 Brussels - BELGIUM F-06921 Sophia Antipolis Cedex - FRANCE

Tel: + 32 2 550 08 11 Tel.: [phone] Tel.: [phone]
Fax: + 32 2 550 08 19 Fax: [phone] Fax: [phone]

Siret N° 348 623 562 00017 - APE 7112B
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° w061004871

Important notice
The present document can be downloaded from the
ETSI Search & Browse Standards application.
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 on ETSI deliver repository.
Users should be aware that the present document may be revised or have its status changed,
this information is available in the Milestones listing.
If you find errors in the present document, please send your comments to
the relevant service listed under Committee Support Staff.
If you find a security vulnerability in the present document, please report it through our
Coordinated Vulnerability Disclosure (CVD) program.
Notice of disclaimer & limitation of liability
The information provided in the present deliverable is directed solely to professionals who have the appropriate degree of
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© ETSI 2026.
© Comité Européen de Normalisation 2026.
© Comité Européen de Normalisation Electrotechnique 2026.
All rights reserved.
ETSI CEN CENELEC
3 EN 301 549 V4.1.1 (2026-09)
Contents
Contents . 3
Intellectual Property Rights . 9
Foreword. 9
Modal verbs terminology . 10
Introduction . 10
1 Scope . 12
2 References . 12
2.1 Normative references . 12
2.2 Informative references . 12
3 Definition of terms, symbols and abbreviations . 16
3.1 Terms . 16
3.2 Symbols . 25
3.3 Abbreviations . 25
4 Functional performance . 26
4.1 Meeting Functional Performance Criteria . 26
4.2 Functional Performance Criteria . 27
4.2.1 Usage without vision . 27
4.2.2 Usage with limited vision . 27
4.2.3 Usage without perception of colour . 27
4.2.4 Usage without hearing . 27
4.2.5 Usage with limited hearing . 28
4.2.6 Usage with no or limited vocal capability . 28
4.2.7 Usage with limited manipulation or strength . 28
4.2.8 Usage with limited reach . 28
4.2.9 Minimize photosensitive seizure triggers . 29
4.2.10 Usage with limited cognition, language or learning . 29
4.2.11 Privacy . 29
5 Generic requirements . 29
5.1 Closed functionality . 29
5.1.1 Introduction (informative) . 29
5.1.2 General . 30
5.1.3 Non-visual access . 30
5.1.4 Functionality closed to text enlargement . 34
5.1.5 Visual output for auditory information. 34
5.1.6 Operation without keyboard interface . 34
5.1.7 Access without speech . 35
5.1.8 Identify input purpose (closed functionality) . 35
5.2 Activation of accessibility features . 35
5.3 Biometrics . 35
5.4 Preservation of accessibility information during conversion . 35
5.5 Tactilely discernible operable parts . 35
5.6 Locking or toggle controls . 36
5.6.1 Tactile or auditory status . 36
5.6.2 Visual status . 36
5.7 Key repeat . 36
5.8 Double-strike key acceptance . 37
5.9 Simultaneous user actions . 37
5.10 Authoring tools . 37
5.10.0 General (informative) . 37
5.10.1 Content technology . 37
5.10.2 Accessible content creation . 37
5.10.3 Preservation of accessibility information in transformations . 37
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4 EN 301 549 V4.1.1 (2026-09)
5.10.4 Repair assistance . 38
5.10.5 Templates . 38
6 ICT supporting real-time bidirectional communication . 38
6.0 Accessible real-time bidirectional communication operational scenarios . 38
6.0.1 Rationale for scenarios (informative) . 38
6.0.2 Communication client . 38
6.0.3 Communication system . 39
6.0.4 System connecting to another communication system . 39
6.0.5 System with roaming visiting client . 39
6.0.6 Client in emergency communications . 39
6.0.7 Emergency communications . 39
6.0.8 System with roaming visiting client in an emergency . 39
6.0.9 System with client in emergency visiting another country . 40
6.1 Real-time bidirectional voice communication . 40
6.1.1 Voice communication interoperability . 40
6.1.2 Audio bandwidth for capture and presentation for voice communication . 41
6.1.3 Audio presentation in attached listening devices for voice communication (recommendation) . 41
6.1.4 Synchronization of subtitles (recommendation) . 41
6.2 Real-Time Text (RTT) . 42
6.2.1 RTT provision . 42
6.2.2 Display of RTT . 42
6.2.3 DTMF touch-tone generation during RTT operations . 44
6.2.4 RTT responsiveness . 44
6.2.5 Adding and erasing of RTT input . 44
6.2.6 Processing rate of RTT . 45
6.2.7 Character representation . 45
6.2.8 RTT input methods . 45
6.2.9 RTT media establishment and use . 45
6.2.10 RTT interoperability . 46
6.3 Caller ID . 47
6.4 Alternatives to voice-based services . 47
6.5 Video communication . 47
6.5.1 General (informative) . 47
6.5.2 Resolution . 48
6.5.3 Frame rate . 48
6.5.4 Synchronization between audio and video . 48
6.5.5 Indicator of audio with video . 48
6.5.6 Indication of all active communication participants . 49
6.6 Alternatives to video-based services (recommendation) . 49
6.7 Total conversation . 49
6.7.1 Total conversation provision . 49
6.7.2 Total conversation interoperability . 49
7 ICT with video capabilities . 50
7.1 Subtitle processing technology . 50
7.1.1 Subtitle playback . 50
7.1.2 Subtitle synchronization . 50
7.1.3 Preservation of subtitles . 50
7.1.4 Subtitle characteristics. 50
7.1.5 Spoken subtitles . 51
7.2 Audio description technology . 51
7.2.1 Audio description playback . 51
7.2.2 Audio description synchronization . 51
7.2.3 Preservation of audio description . 51
7.3 User control of audiovisual accessibility features . 51
8 Hardware . 52
8.1 General . 52
8.2 Hardware products with speech output . 52
8.2.1 Speech volume . 52
8.2.2 Magnetic coupling . 53
8.3 Stationary ICT . 53
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8.3.1 General (informative) . 53
8.3.2 Display screen location . 54
8.3.3 Presentation of information necessary for the operation of stationary ICT . 54
8.3.4 Legibility of display screens (informative) . 54
8.3.5 Control location (vertical) . 54
8.3.6 Control location (horizontal) . 55
8.3.7 Reach depth . 55
8.3.8 Forward or side reach (informative) . 55
8.3.9 Forward reach. 56
8.3.10 Side reach . 56
8.3.11 Free space underneath stationary ICT with or without an obstruction . 58
8.3.12 Floor characteristics (informative) . 59
8.3.13 Approach (informative) . 59
8.3.14 Installation instructions . 59
8.4 Operable parts . 59
8.4.1 Numeric keys . 59
8.4.2 Operation of operable parts . 60
8.4.3 Keys, tickets and cards . 60
8.5 Tactile indication of speech mode . 60
8.6 Standard connections . 60
8.7 Colour on hardware . 60
8.8 Contrast on hardware . 61
9 Web . 61
9.0 General (informative) . 61
9.1 Perceivable . 62
9.1.1 Text alternatives . 62
9.1.2 Time-based media . 62
9.1.3 Adaptable . 63
9.1.4 Distinguishable . 63
9.2 Operable . 65
9.2.1 Keyboard accessible . 65
9.2.2 Enough time . 65
9.2.3 Seizures and physical reactions . 65
9.2.4 Navigable . 65
9.2.5 Input modalities . 66
9.3 Understandable . 67
9.3.1 Readable . 67
9.3.2 Predictable . 67
9.3.3 Input assistance . 68
9.4 Robust . 68
9.4.1 Compatible . 68
9.5 WCAG 2.2 AAA Success Criteria (informative) . 69
9.6 WCAG conformance requirements . 69
9.7 User preferences for web pages . 70
10 Non-web documents . 71
10.0 General (informative) . 71
10.1 Perceivable . 72
10.1.1 Text alternatives . 72
10.1.2 Time-based media . 72
10.1.3 Adaptable . 73
10.1.4 Distinguishable . 74
10.2 Operable . 76
10.2.1 Keyboard accessible . 76
10.2.2 Enough time . 77
10.2.3 Seizures and physical reactions . 78
10.2.4 Navigable . 78
10.2.5 Input modalities . 80
10.3 Understandable . 81
10.3.1 Readable . 81
10.3.2 Predictable . 82
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10.3.3 Input assistance . 83
10.4 Robust . 85
10.4.1 Compatible . 85
10.5 Subtitle positioning (recommendation) . 85
10.6 Audio description timing (recommendation) . 85
10.7 User preferences for non-web documents . 85
11 Non-web software . 86
11.0 General (informative) . 86
11.1 Perceivable . 87
11.1.1 Text alternatives . 87
11.1.2 Time-based media . 87
11.1.3 Adaptable . 89
11.1.4 Distinguishable . 90
11.2 Operable . 92
11.2.1 Keyboard accessible . 92
11.2.2 Enough time . 94
11.2.3 Seizures and physical reactions . 95
11.2.4 Navigable . 95
11.2.5 Input modalities . 96
11.3 Understandable . 98
11.3.1 Readable . 98
11.3.2 Predictable . 98
11.3.3 Input assistance . 99
11.4 Robust . 101
11.4.1 Compatible . 101
11.5 Interoperability with keyboards and assistive technology . 102
11.5.1 Closed functionality (informative) . 102
11.5.2 Accessibility services . 102
11.6 Documented accessibility features . 106
11.6.1 User control of accessibility features . 106
11.6.2 No disruption of accessibility features . 106
11.7 User preferences . 106
12 Information about products and services . 106
12.1 Accessible information about products . 106
12.2 Accessible information about services . 107
12.3 Accessibility and compatibility features . 107
12.4 Electronic program guides . 107
12.5 Electronic program guide display . 107
13 ICT providing relay or emergency service access . 108
13.1 Relay services requirements . 108
13.1.1 General (informative) . 108
13.1.2 Relay service access . 109
13.1.3 Relay service requirements . 110
13.2 Void . 110
13.3 Access to emergency services (informative). 111
14 Conformance . 111
14.1 Achieving conformance (informative) . 111
14.2 Special states . 111
14.3 One mode . 112
Annex A (informative): ICT conformance evaluation . 113
A.1 Conformance with Directive (EU) 2016/2102 on the accessibility of the websites and mobile
applications of public sector bodies . 113
A.2 Conformance with Directive (EU) 2019/882 on the accessibility requirements of products and services . 113
A.2.0 The meaning of conformance with Directive (EU) 2019/882 . 113
A.2.1 Where the ICT is, or includes, a web page . 114
A.2.2 Where the ICT is, or includes, a non-web document . 115
A.2.3 Where the ICT is, or includes, non-web software that provides a user interface . 117
A.2.4 Where the ICT is, or includes, hardware . 121
A.2.5 All ICT . 123
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Annex B (informative): Relationship between requirements and functional performance criteria . 129
B.1 Relationships between clauses 5 to 13 and the functional performance criteria . 129
B.2 Interpretation of Table B.2 . 139
B.2.0 General . 139
B.2.1 Example . 139
Annex C (normative): Determination of conformance . 141
C.1 Introduction. 141
C.2 Empty clause . 141
C.3 Empty clause . 141
C.4 Functional performance . 141
C.4.1 Meeting Functional Performance Criteria . 141
C.4.2 Functional Performance Criteria . 141
C.5 Generic requirements . 143
C.5.1 Closed functionality . 143
C.5.2 Activation of accessibility features . 149
C.5.3 Biometrics . 149
C.5.4 Preservation of accessibility information during conversion . 149
C.5.5 Tactilely discernible operable parts . 149
C.5.6 Locking or toggle controls . 149
C.5.7 Key repeat .
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