The telephone subscribers of an incumbent local exchange company exchange that serves not more than 10,000 access lines may petition the commission for expansion of the company's toll-free local calling area if:
(1) the petitioning exchange's central switching office is located within 22 miles, using vertical and horizontal geographic coordinates, of the central switching office of the exchange requested for expanded local calling service; or
(2) the petitioning exchange's central office is not more than 50 miles from the central office of the exchange requested for expanded local calling service and the exchanges share a community of interest.