Tex. Utilities Code § 52.104: COMMISSION MAY INVESTIGATE.

(a) The commission may investigate as necessary to determine the effect and scope of competition in the telecommunications industry. The investigation may include:

(1) identifying dominant carriers in the local telecommunications and intraLATA interexchange telecommunications industry; and

(2) defining the telecommunications market or markets.

(b) In conducting an investigation under this section, the commission may:

(1) hold a hearing;

(2) issue a subpoena to compel the attendance of a witness or the production of a document; and

(3) make findings of fact and decisions to administer this title or a rule, order, or other action of the commission.

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