(a) Notwithstanding any other provision of this title, a transitioning company that has more than three million access lines in service in this state on January 1, 2006, shall:
(1) on July 1, 2006, reduce both the company’s originating and terminating per minute of use switched access rates in each market by an amount equal to 33 percent of the difference in the rates in effect on June 30, 2006, and the company’s respective federal originating and terminating per minute of use switched access rates;
(2) on July 1, 2007, reduce both the company’s originating and terminating per minute of use switched access rates in each market by an amount equal to 33 percent of the difference in the rates in effect on June 30, 2006, and the company’s respective federal originating and terminating per minute of use switched access rates; and
(3) on July 1, 2008, reduce both the company’s originating and terminating per minute of use switched access rates in each market to parity with the company’s respective federal originating and terminating per minute of use switched access rates.
(b) After reducing the rates under Subsection (a), a transitioning company shall maintain parity with the company’s federal originating and terminating per minute of use switched access rates. If the company’s federal originating and terminating per minute of use switched access rates are changed, the company shall change the company’s per minute of use switched access rates in each market as necessary to re-achieve parity with the company’s federal originating and terminating per minute of use switched access rates.