703.7 Symbols of Accessibility.
703.7.1 Finish and Contrast.
Symbols of accessibility and their background shall have a non-glare finish. Symbols of accessibility shall contrast with their background with either a light symbol on a dark background or a dark symbol on a light background.
703.7.2.1 International Symbol of Accessibility.
The International Symbol of Accessibility shall comply with Figure 703.7.2.1.
703.7.2.2 International Symbol of TTY.
The International Symbol of TTY shall comply with Figure 703.7.2.2.
703.7.2.3 Volume Control Telephones.
Telephones with a volume control shall be identified by a pictogram of a telephone handset with radiating sound waves on a square field such as shown in Figure 703.7.2.3.
703.7.2.4 Assistive Listening Systems.
Assistive listening systems shall be identified by the International Symbol of Access for Hearing Loss complying with Figure 703.7.2.4.