Each certified local exchange telephone company shall comply with the provisions of the Americans with Disabilities Act of 1990 and regulations promulgated thereunder relating to telecommunications relay services for deaf and hard-of-hearing and speech-impaired individuals and shall assess a surcharge to each customer on a per line per month basis to recover the costs associated with such compliance and advise the Commission of any changes.
Okla. Stat. tit. 63, § 2418.1