Tex. Util. Code § 52.107
(a) The commission may enter an order necessary to protect the public interest if the commission finds by a preponderance of the evidence after notice and hearing that an interexchange telecommunications utility has:
(c) An order entered under Subsection (a) may include the imposition on a specific service of the commission's full regulatory authority under:
Acts 1997, 75th Leg., ch. 166, Sec. 1, eff. Sept. 1, 1997.