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Appendix

This appendix contains materials of an advisory nature and provides additional information that should help the reader to understand the minimum requirements of the guidelines or to design buildings or facilities for greater accessibility. The paragraph numbers correspond to the sections or paragraphs of the guideline to which the material relates and are therefore not consecutive (for example, A4.2.1 contains additional information relevant to 4.2.1). Sections of the guidelines for which additional material appears in this appendix have been indicated by an asterisk. Nothing in this appendix shall in any way obviate any obligation to comply with the requirements of the guidelines itself.

A4.0 Accessible Elements and Spaces:  Scope and Technical Requirements.

A4.31 Telephones.

A4.31.3 Mounting Height. In localities where the dial-tone first system is in operation, calls can be placed at a coin telephone through the operator without inserting coins. The operator button is located at a height of 46 in (1170 mm) if the coin slot of the telephone is at 54 in (1370 mm). A generally available public telephone with a coin slot mounted lower on the equipment would allow universal installation of telephones at a height of 48 in (1220 mm) or less to all operable parts.

A4.31.9(1) A public text telephone (TTY) may be an integrated text telephone (TTY) pay telephone unit or a conventional portable text telephone (TTY) that is permanently affixed within, or adjacent to, the telephone enclosure. In order to be usable with a pay telephone, a text telephone (TTY) which is not a single integrated text telephone (TTY) pay telephone unit will require a shelf large enough (10 in (255 mm) wide by 10 in (255 mm) deep with a 6 in (150 mm) vertical clearance minimum) to accommodate the device, an electrical outlet, and a power cord.

A4.31.9(3) Movable or portable text telephones (TTYs) may be used to provide equivalent facilitation. A text telephone (TTY) should be readily available so that a person using it may access the text telephone (TTY) easily and conveniently. As currently designed, pocket-type text telephones (TTYs) for personal use do not accommodate a wide range of users. Such devices would not be considered substantially equivalent to conventional text telephones (TTYs). However, in the future as technology develops this could change.