28 CFR Part 36 Nondiscrimination on the Basis of Disability by Public Accommodations and in Commercial Facilities (1991 ADA Title III Regulations)

(d) Telecommunication devices for the deaf (TDD's).

(1) A public accommodation that offers a customer, client, patient, or participant the opportunity to make outgoing telephone calls on more than an incidental convenience basis shall make available, upon request, a TDD for the use of an individual who has impaired hearing or a communication disorder.

(2) This part does not require a public accommodation to use a TDD for receiving or making telephone calls incident to its operations.