This is a complete listing of the NDA accessibility guidelines for telecoms, in order of priority.
It is designed to support assessment tasks carried out by people in the roles of Planning and Procurement and Testing, Assessment and Quality Assurance.
Minimum accessibility requirements (Priority 1)
Following priority 1 will ensure that the device or service can be used by most people with impaired mobility, vision, hearing, cognition and language understanding.
|1.1 Ensure that all operable parts are reachable by people of all heights and people sitting in a wheelchair or buggy|
|1.2 Ensure that displays are within sight of people of all heights and people sitting in a wheelchair or buggy|
|1.3 Ensure that controls are adequately sized and sufficiently spaced to be operated by people with limited dexterity|
|1.4 Ensure that operation requires minimal strength, grip and wrist twisting|
|1.5 Ensure that the device can be operated using only one hand|
|1.6 Ensure that users with restricted or no vision can use all functions of the device|
|1.7 Ensure that all outputs under the control of the device can be perceived by users with restricted or no vision|
|1.8 Ensure that videophones provide accurate reproduction of text and sign language|
|1.9 Ensure that all outputs under the control of the device can be perceived by users with restricted or no hearing|
|1.10 Ensure compatibility with assistive technologies|
|1.11 If using telephone cards, ensure that the card can be inserted into the card reader in its correct orientation without requiring vision|
|1.12 Use the simplest language possible for instructions and outputs and, in visual displays, supplement it with pictorial information or spoken language|
|1.13 Do not cause the display to flash at a frequency of above 2Hz|
|1.14 Ensure that users can get to the device along an unobstructed path and operate it from a stable position|
|1.15 For Interactive Voice Response (IVR) systems, provide an equivalent service through an accessible channel for users who still cannot use the system|
Additional accessibility requirements (Priority 2)
Following priority 2 will make it easier to use and will include more people with cognitive impairments or multiple disabilities.
|2.1 Allow sufficient time to accommodate the slowest users|
|2.2 Ensure that the user interface and task flow is similar across different functions and remains the same across repeated visits|
|2.3 When deploying more than one version of a device, ensure that the user interfaces are similar|
|2.4 Ensure that videophones allow simultaneous text dialogue|
|2.5 Do not require users to remember a fixed supplied PIN|
|2.6 Provide for users with multiple impairments|