28 CFR Part 35 Title II Notice of Proposed Rulemaking (NPRM) (published 2008)

§ 35.161 Telecommunications.

(a) Where a public entity communicates by telephone with applicants and beneficiaries, text telephones (TTYs) or equally effective telecommunications systems shall be used to communicate with individuals who are deaf or hard of hearing or have speech impairments. 

(b) When a public entity uses an automated attendant system for receiving and directing incoming telephone calls, that automated attendant system must provide effective communication with individuals using auxiliary aids and services, including TTYs or a telecommunications relay system.

(c) A public entity shall respond to telephone calls from a telecommunications relay service established under title IV of the Americans with Disabilities Act in the same manner that it responds to other telephone calls.