---
name: en-301-549
description: "European EN 301 549 V3.2.1 ICT Accessibility Standard knowledge base for accessibility assessment"
---

# EN 301 549 V3.2.1 — Accessibility Requirements for ICT Products and Services

This skill packages the European EN 301 549 V3.2.1 harmonised standard as an accessibility assessment knowledge base. It covers the nine normative clause groups that bind ICT accessibility under European policy (most prominently the Web Accessibility Directive and the European Accessibility Act): Clause 5 (generic), Clause 6 (two-way voice communication), Clause 7 (ICT with video capabilities), Clause 8 (hardware), Clause 9 (web), Clause 10 (non-web documents), Clause 11 (software), Clause 12 (documentation and support services), and Clause 13 (ICT providing relay or emergency services). Clauses 9, 10, and 11 carry WCAG 2.1 Level A and AA success criteria by reference into web, document, and software contexts respectively, so most rows below carry WCAG cross-references that link into the sibling [`wcag-22`](../wcag-22/SKILL.md) skill's per-guideline reference files (anchored at `#sc-<n>-<m>-<k>`).

Source: ETSI / CEN / CENELEC, EN 301 549 V3.2.1, <https://www.etsi.org/deliver/etsi_en/301500_301599/301549/>. EN 301 549 reference text is reproduced strictly under the paraphrase-only posture defined in [`accessibility-license-posture.instructions.md`](../../../instructions/accessibility/accessibility-license-posture.instructions.md); every clause summary in this skill is paraphrased in the authors' own words and cites the ETSI portal as the authoritative source for the normative wording.

## Clause Roll-up

| Clause    | Title                                                   | Applies to                     | WCAG cross-ref                                                                                                           | Reference                                                                             |
|-----------|---------------------------------------------------------|--------------------------------|--------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------|
| 5.1       | Functional performance                                  | All ICT                        | n/a                                                                                                                      | [clause-group-5.md#clause-5-1](references/clause-group-5.md#clause-5-1)               |
| 5.2       | Activation of accessibility features                    | All ICT                        | n/a                                                                                                                      | [clause-group-5.md#clause-5-2](references/clause-group-5.md#clause-5-2)               |
| 5.3       | Biometrics                                              | Biometric authentication       | n/a                                                                                                                      | [clause-group-5.md#clause-5-3](references/clause-group-5.md#clause-5-3)               |
| 5.4       | Preservation of accessibility information               | All ICT                        | n/a                                                                                                                      | [clause-group-5.md#clause-5-4](references/clause-group-5.md#clause-5-4)               |
| 5.5       | Operable parts                                          | Hardware controls              | [sc-2-5-5](../wcag-22/references/guideline-2-5.md#sc-2-5-5)                                                              | [clause-group-5.md#clause-5-5](references/clause-group-5.md#clause-5-5)               |
| 5.6       | Locking and toggle controls                             | Hardware locks                 | n/a                                                                                                                      | [clause-group-5.md#clause-5-6](references/clause-group-5.md#clause-5-6)               |
| 5.7       | Key repeat                                              | Keyboard input                 | n/a                                                                                                                      | [clause-group-5.md#clause-5-7](references/clause-group-5.md#clause-5-7)               |
| 5.8       | Double-strike key acceptance                            | Keyboard input                 | n/a                                                                                                                      | [clause-group-5.md#clause-5-8](references/clause-group-5.md#clause-5-8)               |
| 5.9       | Simultaneous user actions                               | Multi-touch and chorded input  | n/a                                                                                                                      | [clause-group-5.md#clause-5-9](references/clause-group-5.md#clause-5-9)               |
| 5.10      | Privacy                                                 | All ICT                        | n/a                                                                                                                      | [clause-group-5.md#clause-5-10](references/clause-group-5.md#clause-5-10)             |
| 6.1       | Audio bandwidth for speech                              | Voice communication            | n/a                                                                                                                      | [clause-group-6.md#clause-6-1](references/clause-group-6.md#clause-6-1)               |
| 6.2       | Real-time text functionality                            | Voice ICT with text            | n/a                                                                                                                      | [clause-group-6.md#clause-6-2](references/clause-group-6.md#clause-6-2)               |
| 6.3       | Caller identification                                   | Voice communication            | n/a                                                                                                                      | [clause-group-6.md#clause-6-3](references/clause-group-6.md#clause-6-3)               |
| 6.4       | Alternatives to voice-based services                    | Voice services                 | n/a                                                                                                                      | [clause-group-6.md#clause-6-4](references/clause-group-6.md#clause-6-4)               |
| 6.5       | Video communication                                     | Video calls                    | [sc-1-2-2](../wcag-22/references/guideline-1-2.md#sc-1-2-2), [sc-1-2-5](../wcag-22/references/guideline-1-2.md#sc-1-2-5) | [clause-group-6.md#clause-6-5](references/clause-group-6.md#clause-6-5)               |
| 6.6       | Interoperability with emergency services                | Emergency voice access         | n/a                                                                                                                      | [clause-group-6.md#clause-6-6](references/clause-group-6.md#clause-6-6)               |
| 7.1       | Captioning playback                                     | Video playback                 | [sc-1-2-2](../wcag-22/references/guideline-1-2.md#sc-1-2-2), [sc-1-2-4](../wcag-22/references/guideline-1-2.md#sc-1-2-4) | [clause-group-7.md#clause-7-1](references/clause-group-7.md#clause-7-1)               |
| 7.2       | Audio description playback                              | Video playback                 | [sc-1-2-3](../wcag-22/references/guideline-1-2.md#sc-1-2-3), [sc-1-2-5](../wcag-22/references/guideline-1-2.md#sc-1-2-5) | [clause-group-7.md#clause-7-2](references/clause-group-7.md#clause-7-2)               |
| 7.3       | User controls for captions and audio description        | Video player UI                | [sc-1-2-2](../wcag-22/references/guideline-1-2.md#sc-1-2-2), [sc-1-2-3](../wcag-22/references/guideline-1-2.md#sc-1-2-3) | [clause-group-7.md#clause-7-3](references/clause-group-7.md#clause-7-3)               |
| 8.1       | General                                                 | All hardware                   | n/a                                                                                                                      | [clause-group-8.md#clause-8-1](references/clause-group-8.md#clause-8-1)               |
| 8.2       | Hardware products with speech output                    | Speech-output hardware         | n/a                                                                                                                      | [clause-group-8.md#clause-8-2](references/clause-group-8.md#clause-8-2)               |
| 8.3       | Stationary ICT                                          | Kiosks and stationary devices  | [sc-1-4-3](../wcag-22/references/guideline-1-4.md#sc-1-4-3)                                                              | [clause-group-8.md#clause-8-3](references/clause-group-8.md#clause-8-3)               |
| 8.4       | Mechanical hardware (locks and operable parts)          | Physical controls              | [sc-2-1-1](../wcag-22/references/guideline-2-1.md#sc-2-1-1)                                                              | [clause-group-8.md#clause-8-4](references/clause-group-8.md#clause-8-4)               |
| 8.5       | Tickets, fare cards, and keycards                       | Identification media           | n/a                                                                                                                      | [clause-group-8.md#clause-8-5](references/clause-group-8.md#clause-8-5)               |
| 9.1.1.1   | Non-text content                                        | Images and media               | [sc-1-1-1](../wcag-22/references/guideline-1-1.md#sc-1-1-1)                                                              | [clause-group-9.md#clause-9-1-1-1](references/clause-group-9.md#clause-9-1-1-1)       |
| 9.1.2.1   | Audio-only and video-only (prerecorded)                 | Prerecorded media              | [sc-1-2-1](../wcag-22/references/guideline-1-2.md#sc-1-2-1)                                                              | [clause-group-9.md#clause-9-1-2-1](references/clause-group-9.md#clause-9-1-2-1)       |
| 9.1.2.2   | Captions (prerecorded)                                  | Prerecorded video              | [sc-1-2-2](../wcag-22/references/guideline-1-2.md#sc-1-2-2)                                                              | [clause-group-9.md#clause-9-1-2-2](references/clause-group-9.md#clause-9-1-2-2)       |
| 9.1.2.3   | Audio description or media alternative (prerecorded)    | Prerecorded video              | [sc-1-2-3](../wcag-22/references/guideline-1-2.md#sc-1-2-3)                                                              | [clause-group-9.md#clause-9-1-2-3](references/clause-group-9.md#clause-9-1-2-3)       |
| 9.1.2.4   | Captions (live)                                         | Live video                     | [sc-1-2-4](../wcag-22/references/guideline-1-2.md#sc-1-2-4)                                                              | [clause-group-9.md#clause-9-1-2-4](references/clause-group-9.md#clause-9-1-2-4)       |
| 9.1.2.5   | Audio description (prerecorded)                         | Prerecorded video              | [sc-1-2-5](../wcag-22/references/guideline-1-2.md#sc-1-2-5)                                                              | [clause-group-9.md#clause-9-1-2-5](references/clause-group-9.md#clause-9-1-2-5)       |
| 9.1.3.1   | Info and relationships                                  | Page structure                 | [sc-1-3-1](../wcag-22/references/guideline-1-3.md#sc-1-3-1)                                                              | [clause-group-9.md#clause-9-1-3-1](references/clause-group-9.md#clause-9-1-3-1)       |
| 9.1.3.2   | Meaningful sequence                                     | Content order                  | [sc-1-3-2](../wcag-22/references/guideline-1-3.md#sc-1-3-2)                                                              | [clause-group-9.md#clause-9-1-3-2](references/clause-group-9.md#clause-9-1-3-2)       |
| 9.1.3.3   | Sensory characteristics                                 | Instructions                   | [sc-1-3-3](../wcag-22/references/guideline-1-3.md#sc-1-3-3)                                                              | [clause-group-9.md#clause-9-1-3-3](references/clause-group-9.md#clause-9-1-3-3)       |
| 9.1.3.4   | Orientation                                             | Responsive pages               | [sc-1-3-4](../wcag-22/references/guideline-1-3.md#sc-1-3-4)                                                              | [clause-group-9.md#clause-9-1-3-4](references/clause-group-9.md#clause-9-1-3-4)       |
| 9.1.3.5   | Identify input purpose                                  | Form fields                    | [sc-1-3-5](../wcag-22/references/guideline-1-3.md#sc-1-3-5)                                                              | [clause-group-9.md#clause-9-1-3-5](references/clause-group-9.md#clause-9-1-3-5)       |
| 9.1.4.1   | Use of color                                            | Visual design                  | [sc-1-4-1](../wcag-22/references/guideline-1-4.md#sc-1-4-1)                                                              | [clause-group-9.md#clause-9-1-4-1](references/clause-group-9.md#clause-9-1-4-1)       |
| 9.1.4.2   | Audio control                                           | Sound and media                | [sc-1-4-2](../wcag-22/references/guideline-1-4.md#sc-1-4-2)                                                              | [clause-group-9.md#clause-9-1-4-2](references/clause-group-9.md#clause-9-1-4-2)       |
| 9.1.4.3   | Contrast (minimum)                                      | Text and graphics              | [sc-1-4-3](../wcag-22/references/guideline-1-4.md#sc-1-4-3)                                                              | [clause-group-9.md#clause-9-1-4-3](references/clause-group-9.md#clause-9-1-4-3)       |
| 9.1.4.4   | Resize text                                             | Text sizing                    | [sc-1-4-4](../wcag-22/references/guideline-1-4.md#sc-1-4-4)                                                              | [clause-group-9.md#clause-9-1-4-4](references/clause-group-9.md#clause-9-1-4-4)       |
| 9.1.4.5   | Images of text                                          | Text presentation              | [sc-1-4-5](../wcag-22/references/guideline-1-4.md#sc-1-4-5)                                                              | [clause-group-9.md#clause-9-1-4-5](references/clause-group-9.md#clause-9-1-4-5)       |
| 9.1.4.10  | Reflow                                                  | Layout and scrolling           | [sc-1-4-10](../wcag-22/references/guideline-1-4.md#sc-1-4-10)                                                            | [clause-group-9.md#clause-9-1-4-10](references/clause-group-9.md#clause-9-1-4-10)     |
| 9.1.4.11  | Non-text contrast                                       | UI components and graphics     | [sc-1-4-11](../wcag-22/references/guideline-1-4.md#sc-1-4-11)                                                            | [clause-group-9.md#clause-9-1-4-11](references/clause-group-9.md#clause-9-1-4-11)     |
| 9.1.4.12  | Text spacing                                            | Content spacing                | [sc-1-4-12](../wcag-22/references/guideline-1-4.md#sc-1-4-12)                                                            | [clause-group-9.md#clause-9-1-4-12](references/clause-group-9.md#clause-9-1-4-12)     |
| 9.1.4.13  | Content on hover or focus                               | Dynamic content                | [sc-1-4-13](../wcag-22/references/guideline-1-4.md#sc-1-4-13)                                                            | [clause-group-9.md#clause-9-1-4-13](references/clause-group-9.md#clause-9-1-4-13)     |
| 9.2.1.1   | Keyboard                                                | Input methods                  | [sc-2-1-1](../wcag-22/references/guideline-2-1.md#sc-2-1-1)                                                              | [clause-group-9.md#clause-9-2-1-1](references/clause-group-9.md#clause-9-2-1-1)       |
| 9.2.1.2   | No keyboard trap                                        | Navigation                     | [sc-2-1-2](../wcag-22/references/guideline-2-1.md#sc-2-1-2)                                                              | [clause-group-9.md#clause-9-2-1-2](references/clause-group-9.md#clause-9-2-1-2)       |
| 9.2.1.4   | Character key shortcuts                                 | Keyboard bindings              | [sc-2-1-4](../wcag-22/references/guideline-2-1.md#sc-2-1-4)                                                              | [clause-group-9.md#clause-9-2-1-4](references/clause-group-9.md#clause-9-2-1-4)       |
| 9.2.2.1   | Timing adjustable                                       | Timed content                  | [sc-2-2-1](../wcag-22/references/guideline-2-2.md#sc-2-2-1)                                                              | [clause-group-9.md#clause-9-2-2-1](references/clause-group-9.md#clause-9-2-2-1)       |
| 9.2.2.2   | Pause, stop, hide                                       | Animated content               | [sc-2-2-2](../wcag-22/references/guideline-2-2.md#sc-2-2-2)                                                              | [clause-group-9.md#clause-9-2-2-2](references/clause-group-9.md#clause-9-2-2-2)       |
| 9.2.3.1   | Three flashes or below threshold                        | Animation safety               | [sc-2-3-1](../wcag-22/references/guideline-2-3.md#sc-2-3-1)                                                              | [clause-group-9.md#clause-9-2-3-1](references/clause-group-9.md#clause-9-2-3-1)       |
| 9.2.4.1   | Bypass blocks                                           | Navigation aids                | [sc-2-4-1](../wcag-22/references/guideline-2-4.md#sc-2-4-1)                                                              | [clause-group-9.md#clause-9-2-4-1](references/clause-group-9.md#clause-9-2-4-1)       |
| 9.2.4.2   | Page titled                                             | Page identification            | [sc-2-4-2](../wcag-22/references/guideline-2-4.md#sc-2-4-2)                                                              | [clause-group-9.md#clause-9-2-4-2](references/clause-group-9.md#clause-9-2-4-2)       |
| 9.2.4.3   | Focus order                                             | Keyboard navigation            | [sc-2-4-3](../wcag-22/references/guideline-2-4.md#sc-2-4-3)                                                              | [clause-group-9.md#clause-9-2-4-3](references/clause-group-9.md#clause-9-2-4-3)       |
| 9.2.4.4   | Link purpose (in context)                               | Link text                      | [sc-2-4-4](../wcag-22/references/guideline-2-4.md#sc-2-4-4)                                                              | [clause-group-9.md#clause-9-2-4-4](references/clause-group-9.md#clause-9-2-4-4)       |
| 9.2.4.5   | Multiple ways                                           | Navigation options             | [sc-2-4-5](../wcag-22/references/guideline-2-4.md#sc-2-4-5)                                                              | [clause-group-9.md#clause-9-2-4-5](references/clause-group-9.md#clause-9-2-4-5)       |
| 9.2.4.6   | Headings and labels                                     | Content structure              | [sc-2-4-6](../wcag-22/references/guideline-2-4.md#sc-2-4-6)                                                              | [clause-group-9.md#clause-9-2-4-6](references/clause-group-9.md#clause-9-2-4-6)       |
| 9.2.4.7   | Focus visible                                           | Focus indication               | [sc-2-4-7](../wcag-22/references/guideline-2-4.md#sc-2-4-7)                                                              | [clause-group-9.md#clause-9-2-4-7](references/clause-group-9.md#clause-9-2-4-7)       |
| 9.2.5.1   | Pointer gestures                                        | Gesture interactions           | [sc-2-5-1](../wcag-22/references/guideline-2-5.md#sc-2-5-1)                                                              | [clause-group-9.md#clause-9-2-5-1](references/clause-group-9.md#clause-9-2-5-1)       |
| 9.2.5.2   | Pointer cancellation                                    | Pointer activation             | [sc-2-5-2](../wcag-22/references/guideline-2-5.md#sc-2-5-2)                                                              | [clause-group-9.md#clause-9-2-5-2](references/clause-group-9.md#clause-9-2-5-2)       |
| 9.2.5.3   | Label in name                                           | Accessible names               | [sc-2-5-3](../wcag-22/references/guideline-2-5.md#sc-2-5-3)                                                              | [clause-group-9.md#clause-9-2-5-3](references/clause-group-9.md#clause-9-2-5-3)       |
| 9.2.5.4   | Motion actuation                                        | Device-motion controls         | [sc-2-5-4](../wcag-22/references/guideline-2-5.md#sc-2-5-4)                                                              | [clause-group-9.md#clause-9-2-5-4](references/clause-group-9.md#clause-9-2-5-4)       |
| 9.3.1.1   | Language of page                                        | Page language                  | [sc-3-1-1](../wcag-22/references/guideline-3-1.md#sc-3-1-1)                                                              | [clause-group-9.md#clause-9-3-1-1](references/clause-group-9.md#clause-9-3-1-1)       |
| 9.3.1.2   | Language of parts                                       | Content language               | [sc-3-1-2](../wcag-22/references/guideline-3-1.md#sc-3-1-2)                                                              | [clause-group-9.md#clause-9-3-1-2](references/clause-group-9.md#clause-9-3-1-2)       |
| 9.3.2.1   | On focus                                                | Input behavior                 | [sc-3-2-1](../wcag-22/references/guideline-3-2.md#sc-3-2-1)                                                              | [clause-group-9.md#clause-9-3-2-1](references/clause-group-9.md#clause-9-3-2-1)       |
| 9.3.2.2   | On input                                                | Input changes                  | [sc-3-2-2](../wcag-22/references/guideline-3-2.md#sc-3-2-2)                                                              | [clause-group-9.md#clause-9-3-2-2](references/clause-group-9.md#clause-9-3-2-2)       |
| 9.3.2.3   | Consistent navigation                                   | Navigation pattern             | [sc-3-2-3](../wcag-22/references/guideline-3-2.md#sc-3-2-3)                                                              | [clause-group-9.md#clause-9-3-2-3](references/clause-group-9.md#clause-9-3-2-3)       |
| 9.3.2.4   | Consistent identification                               | UI consistency                 | [sc-3-2-4](../wcag-22/references/guideline-3-2.md#sc-3-2-4)                                                              | [clause-group-9.md#clause-9-3-2-4](references/clause-group-9.md#clause-9-3-2-4)       |
| 9.3.3.1   | Error identification                                    | Form errors                    | [sc-3-3-1](../wcag-22/references/guideline-3-3.md#sc-3-3-1)                                                              | [clause-group-9.md#clause-9-3-3-1](references/clause-group-9.md#clause-9-3-3-1)       |
| 9.3.3.2   | Labels or instructions                                  | Form guidance                  | [sc-3-3-2](../wcag-22/references/guideline-3-3.md#sc-3-3-2)                                                              | [clause-group-9.md#clause-9-3-3-2](references/clause-group-9.md#clause-9-3-3-2)       |
| 9.3.3.3   | Error suggestion                                        | Error recovery                 | [sc-3-3-3](../wcag-22/references/guideline-3-3.md#sc-3-3-3)                                                              | [clause-group-9.md#clause-9-3-3-3](references/clause-group-9.md#clause-9-3-3-3)       |
| 9.3.3.4   | Error prevention (legal, financial, data)               | Critical input                 | [sc-3-3-4](../wcag-22/references/guideline-3-3.md#sc-3-3-4)                                                              | [clause-group-9.md#clause-9-3-3-4](references/clause-group-9.md#clause-9-3-3-4)       |
| 9.4.1.1   | Parsing                                                 | Code validity                  | [sc-4-1-1](../wcag-22/references/guideline-4-1.md#sc-4-1-1)                                                              | [clause-group-9.md#clause-9-4-1-1](references/clause-group-9.md#clause-9-4-1-1)       |
| 9.4.1.2   | Name, role, value                                       | Accessible components          | [sc-4-1-2](../wcag-22/references/guideline-4-1.md#sc-4-1-2)                                                              | [clause-group-9.md#clause-9-4-1-2](references/clause-group-9.md#clause-9-4-1-2)       |
| 9.4.1.3   | Status messages                                         | Notifications                  | [sc-4-1-3](../wcag-22/references/guideline-4-1.md#sc-4-1-3)                                                              | [clause-group-9.md#clause-9-4-1-3](references/clause-group-9.md#clause-9-4-1-3)       |
| 10.1.1.1  | Non-text content                                        | Images in documents            | [sc-1-1-1](../wcag-22/references/guideline-1-1.md#sc-1-1-1)                                                              | [clause-group-10.md#clause-10-1-1-1](references/clause-group-10.md#clause-10-1-1-1)   |
| 10.1.2.1  | Audio-only and video-only (prerecorded)                 | Prerecorded media in documents | [sc-1-2-1](../wcag-22/references/guideline-1-2.md#sc-1-2-1)                                                              | [clause-group-10.md#clause-10-1-2-1](references/clause-group-10.md#clause-10-1-2-1)   |
| 10.1.2.2  | Captions (prerecorded)                                  | Video in documents             | [sc-1-2-2](../wcag-22/references/guideline-1-2.md#sc-1-2-2)                                                              | [clause-group-10.md#clause-10-1-2-2](references/clause-group-10.md#clause-10-1-2-2)   |
| 10.1.2.3  | Audio description or media alternative                  | Video in documents             | [sc-1-2-3](../wcag-22/references/guideline-1-2.md#sc-1-2-3)                                                              | [clause-group-10.md#clause-10-1-2-3](references/clause-group-10.md#clause-10-1-2-3)   |
| 10.1.3.1  | Info and relationships                                  | Document structure             | [sc-1-3-1](../wcag-22/references/guideline-1-3.md#sc-1-3-1)                                                              | [clause-group-10.md#clause-10-1-3-1](references/clause-group-10.md#clause-10-1-3-1)   |
| 10.1.3.2  | Meaningful sequence                                     | Content order in documents     | [sc-1-3-2](../wcag-22/references/guideline-1-3.md#sc-1-3-2)                                                              | [clause-group-10.md#clause-10-1-3-2](references/clause-group-10.md#clause-10-1-3-2)   |
| 10.1.3.3  | Sensory characteristics                                 | Document instructions          | [sc-1-3-3](../wcag-22/references/guideline-1-3.md#sc-1-3-3)                                                              | [clause-group-10.md#clause-10-1-3-3](references/clause-group-10.md#clause-10-1-3-3)   |
| 10.1.4.1  | Use of color                                            | Visual design in documents     | [sc-1-4-1](../wcag-22/references/guideline-1-4.md#sc-1-4-1)                                                              | [clause-group-10.md#clause-10-1-4-1](references/clause-group-10.md#clause-10-1-4-1)   |
| 10.1.4.2  | Audio control                                           | Sound in documents             | [sc-1-4-2](../wcag-22/references/guideline-1-4.md#sc-1-4-2)                                                              | [clause-group-10.md#clause-10-1-4-2](references/clause-group-10.md#clause-10-1-4-2)   |
| 10.1.4.3  | Contrast (minimum)                                      | Text and graphics in documents | [sc-1-4-3](../wcag-22/references/guideline-1-4.md#sc-1-4-3)                                                              | [clause-group-10.md#clause-10-1-4-3](references/clause-group-10.md#clause-10-1-4-3)   |
| 10.2.1.1  | Keyboard                                                | Document navigation            | [sc-2-1-1](../wcag-22/references/guideline-2-1.md#sc-2-1-1)                                                              | [clause-group-10.md#clause-10-2-1-1](references/clause-group-10.md#clause-10-2-1-1)   |
| 10.2.1.2  | No keyboard trap                                        | Document input                 | [sc-2-1-2](../wcag-22/references/guideline-2-1.md#sc-2-1-2)                                                              | [clause-group-10.md#clause-10-2-1-2](references/clause-group-10.md#clause-10-2-1-2)   |
| 10.2.4.2  | Page titled                                             | Document identification        | [sc-2-4-2](../wcag-22/references/guideline-2-4.md#sc-2-4-2)                                                              | [clause-group-10.md#clause-10-2-4-2](references/clause-group-10.md#clause-10-2-4-2)   |
| 10.2.4.3  | Focus order                                             | Document focus                 | [sc-2-4-3](../wcag-22/references/guideline-2-4.md#sc-2-4-3)                                                              | [clause-group-10.md#clause-10-2-4-3](references/clause-group-10.md#clause-10-2-4-3)   |
| 10.3.1.1  | Language of document                                    | Document language              | [sc-3-1-1](../wcag-22/references/guideline-3-1.md#sc-3-1-1)                                                              | [clause-group-10.md#clause-10-3-1-1](references/clause-group-10.md#clause-10-3-1-1)   |
| 11.1.1.1  | Non-text content                                        | UI graphics and icons          | [sc-1-1-1](../wcag-22/references/guideline-1-1.md#sc-1-1-1)                                                              | [clause-group-11.md#clause-11-1-1-1](references/clause-group-11.md#clause-11-1-1-1)   |
| 11.1.3.1  | Info and relationships                                  | UI structure                   | [sc-1-3-1](../wcag-22/references/guideline-1-3.md#sc-1-3-1)                                                              | [clause-group-11.md#clause-11-1-3-1](references/clause-group-11.md#clause-11-1-3-1)   |
| 11.1.3.2  | Meaningful sequence                                     | UI component order             | [sc-1-3-2](../wcag-22/references/guideline-1-3.md#sc-1-3-2)                                                              | [clause-group-11.md#clause-11-1-3-2](references/clause-group-11.md#clause-11-1-3-2)   |
| 11.1.3.3  | Sensory characteristics                                 | UI instructions                | [sc-1-3-3](../wcag-22/references/guideline-1-3.md#sc-1-3-3)                                                              | [clause-group-11.md#clause-11-1-3-3](references/clause-group-11.md#clause-11-1-3-3)   |
| 11.1.4.1  | Use of color                                            | App visual design              | [sc-1-4-1](../wcag-22/references/guideline-1-4.md#sc-1-4-1)                                                              | [clause-group-11.md#clause-11-1-4-1](references/clause-group-11.md#clause-11-1-4-1)   |
| 11.1.4.2  | Audio control                                           | App audio output               | [sc-1-4-2](../wcag-22/references/guideline-1-4.md#sc-1-4-2)                                                              | [clause-group-11.md#clause-11-1-4-2](references/clause-group-11.md#clause-11-1-4-2)   |
| 11.1.4.3  | Contrast (minimum)                                      | App contrast ratio             | [sc-1-4-3](../wcag-22/references/guideline-1-4.md#sc-1-4-3)                                                              | [clause-group-11.md#clause-11-1-4-3](references/clause-group-11.md#clause-11-1-4-3)   |
| 11.1.4.11 | Non-text contrast                                       | App UI components              | [sc-1-4-11](../wcag-22/references/guideline-1-4.md#sc-1-4-11)                                                            | [clause-group-11.md#clause-11-1-4-11](references/clause-group-11.md#clause-11-1-4-11) |
| 11.2.1.1  | Keyboard                                                | App keyboard access            | [sc-2-1-1](../wcag-22/references/guideline-2-1.md#sc-2-1-1)                                                              | [clause-group-11.md#clause-11-2-1-1](references/clause-group-11.md#clause-11-2-1-1)   |
| 11.2.1.2  | No keyboard trap                                        | App focus management           | [sc-2-1-2](../wcag-22/references/guideline-2-1.md#sc-2-1-2)                                                              | [clause-group-11.md#clause-11-2-1-2](references/clause-group-11.md#clause-11-2-1-2)   |
| 11.2.1.3  | Keyboard (no exception)                                 | App keyboard-only mode         | [sc-2-1-3](../wcag-22/references/guideline-2-1.md#sc-2-1-3)                                                              | [clause-group-11.md#clause-11-2-1-3](references/clause-group-11.md#clause-11-2-1-3)   |
| 11.2.2.1  | Timing adjustable                                       | App timed interactions         | [sc-2-2-1](../wcag-22/references/guideline-2-2.md#sc-2-2-1)                                                              | [clause-group-11.md#clause-11-2-2-1](references/clause-group-11.md#clause-11-2-2-1)   |
| 11.2.2.2  | Pause, stop, hide                                       | App animations                 | [sc-2-2-2](../wcag-22/references/guideline-2-2.md#sc-2-2-2)                                                              | [clause-group-11.md#clause-11-2-2-2](references/clause-group-11.md#clause-11-2-2-2)   |
| 11.2.4.3  | Focus order                                             | App focus sequence             | [sc-2-4-3](../wcag-22/references/guideline-2-4.md#sc-2-4-3)                                                              | [clause-group-11.md#clause-11-2-4-3](references/clause-group-11.md#clause-11-2-4-3)   |
| 11.2.4.6  | Headings and labels                                     | App labels                     | [sc-2-4-6](../wcag-22/references/guideline-2-4.md#sc-2-4-6)                                                              | [clause-group-11.md#clause-11-2-4-6](references/clause-group-11.md#clause-11-2-4-6)   |
| 11.2.4.7  | Focus visible                                           | App focus indication           | [sc-2-4-7](../wcag-22/references/guideline-2-4.md#sc-2-4-7)                                                              | [clause-group-11.md#clause-11-2-4-7](references/clause-group-11.md#clause-11-2-4-7)   |
| 11.3.1.1  | Language of software                                    | UI language setting            | [sc-3-1-1](../wcag-22/references/guideline-3-1.md#sc-3-1-1)                                                              | [clause-group-11.md#clause-11-3-1-1](references/clause-group-11.md#clause-11-3-1-1)   |
| 11.3.2.1  | On focus                                                | App predictable behavior       | [sc-3-2-1](../wcag-22/references/guideline-3-2.md#sc-3-2-1)                                                              | [clause-group-11.md#clause-11-3-2-1](references/clause-group-11.md#clause-11-3-2-1)   |
| 11.3.2.2  | On input                                                | App input behavior             | [sc-3-2-2](../wcag-22/references/guideline-3-2.md#sc-3-2-2)                                                              | [clause-group-11.md#clause-11-3-2-2](references/clause-group-11.md#clause-11-3-2-2)   |
| 11.3.2.4  | Consistent identification                               | App consistent UI patterns     | [sc-3-2-4](../wcag-22/references/guideline-3-2.md#sc-3-2-4)                                                              | [clause-group-11.md#clause-11-3-2-4](references/clause-group-11.md#clause-11-3-2-4)   |
| 11.3.3.1  | Error identification                                    | App error messages             | [sc-3-3-1](../wcag-22/references/guideline-3-3.md#sc-3-3-1)                                                              | [clause-group-11.md#clause-11-3-3-1](references/clause-group-11.md#clause-11-3-3-1)   |
| 11.3.3.2  | Labels or instructions                                  | App guidance                   | [sc-3-3-2](../wcag-22/references/guideline-3-3.md#sc-3-3-2)                                                              | [clause-group-11.md#clause-11-3-3-2](references/clause-group-11.md#clause-11-3-3-2)   |
| 11.4.1.2  | Name, role, value                                       | App API accessibility          | [sc-4-1-2](../wcag-22/references/guideline-4-1.md#sc-4-1-2)                                                              | [clause-group-11.md#clause-11-4-1-2](references/clause-group-11.md#clause-11-4-1-2)   |
| 11.4.1.3  | Status messages                                         | App state changes              | [sc-4-1-3](../wcag-22/references/guideline-4-1.md#sc-4-1-3)                                                              | [clause-group-11.md#clause-11-4-1-3](references/clause-group-11.md#clause-11-4-1-3)   |
| 12.1.1    | Accessibility and compatibility features                | Feature documentation          | n/a                                                                                                                      | [clause-group-12.md#clause-12-1-1](references/clause-group-12.md#clause-12-1-1)       |
| 12.1.2    | Accessible documentation                                | Help content                   | n/a                                                                                                                      | [clause-group-12.md#clause-12-1-2](references/clause-group-12.md#clause-12-1-2)       |
| 12.2.2    | Information on accessibility and compatibility features | Support information            | n/a                                                                                                                      | [clause-group-12.md#clause-12-2-2](references/clause-group-12.md#clause-12-2-2)       |
| 12.2.3    | Effective communication                                 | Support channels               | n/a                                                                                                                      | [clause-group-12.md#clause-12-2-3](references/clause-group-12.md#clause-12-2-3)       |
| 12.2.4    | Accessible documentation                                | Support materials              | n/a                                                                                                                      | [clause-group-12.md#clause-12-2-4](references/clause-group-12.md#clause-12-2-4)       |
| 13.1.1    | Access to relay services                                | Relay service access           | n/a                                                                                                                      | [clause-group-13.md#clause-13-1-1](references/clause-group-13.md#clause-13-1-1)       |
| 13.1.2    | Access to emergency services                            | Emergency service access       | n/a                                                                                                                      | [clause-group-13.md#clause-13-1-2](references/clause-group-13.md#clause-13-1-2)       |
| 13.2.1    | Real-time text emergency communication                  | Emergency RTT                  | n/a                                                                                                                      | [clause-group-13.md#clause-13-2-1](references/clause-group-13.md#clause-13-2-1)       |
| 13.2.2    | Caller location for emergency                           | Emergency location data        | n/a                                                                                                                      | [clause-group-13.md#clause-13-2-2](references/clause-group-13.md#clause-13-2-2)       |
| 13.2.3    | Video relay for emergency                               | Emergency video relay          | n/a                                                                                                                      | [clause-group-13.md#clause-13-2-3](references/clause-group-13.md#clause-13-2-3)       |

## How to use this skill

Use the roll-up table to identify the EN 301 549 clauses that apply to a given product context (web, document, software, hardware, voice, video, support, or relay/emergency). Follow each reference link to the per-clause-group file for the paraphrased requirement, applicability scope, WCAG cross-reference, and assessment heuristics. When a row carries a `sc-<n>-<m>-<k>` cross-reference, consult the sibling [`wcag-22`](../wcag-22/SKILL.md) skill for the underlying technical detail — Clauses 9, 10, and 11 inherit WCAG 2.1 Level A and AA wholesale into web, non-web document, and software contexts respectively, so most accessibility implementation work happens against the WCAG criterion text with the EN 301 549 clause adding only the regulatory framing.

For the precise normative wording of any clause, consult the official ETSI document at <https://www.etsi.org/deliver/etsi_en/301500_301599/301549/>. The paraphrased summaries in this skill are not a substitute for the upstream standard when a regulator, procurement authority, or court requires verbatim conformance text.