Tex. Utilities Code § 56.103: TELECOMMUNICATIONS RELAY ACCESS SERVICE REQUIREMENTS.

(a) The telecommunications relay access service shall provide a person with an impairment of hearing or speech with access to the telecommunications network in this state equivalent to the access provided other customers.

(b) The service consists of:

(1) switching and transmission of the call;

(2) live or automated verbal and print translations of communications between a person with an impairment of hearing or speech who uses a telecommunications device for the deaf or a similar automated device and a person who does not have such equipment; and

(3) other service enhancements proposed by the carrier and approved by the commission.

Acts 1997, 75th Leg., ch. 166, Sec. 1, eff. Sept. 1, 1997.