36 CFR Parts 1190 and 1191 ADA and ABA Accessibility Guidelines - Preamble (Discussion of Comments and Changes)

General scoping for TTYs in 217.4 includes provisions specific to floors, buildings, and exterior sites and distinguishes between private and public facilities. In private buildings (i.e., places of public accommodation and commercial facilities) where four or more pay phones are provided at a bank, within a floor, building, or on an exterior site, a TTY is required at each such location. A lower threshold is provided for public buildings (i.e., State and local government facilities) where one pay telephone on a floor or within a public use area of a building triggers the requirement for a TTY. In the final rule, the Board has clarified references to "site" as being specific to "exterior sites" to avoid confusion that may arise since the term "site," by itself, can be read to include the buildings on a site. This change helps clarify that TTY scoping requirements for exterior installations is to be satisfied independently from those applicable to interior locations.