47 CFR § 61.46 - Adjustments to the API.
(a) Except as provided in paragraphs (d) and (e) of this section, in connection with any price cap tariff filing proposing rate changes, the price cap local exchange carrier must calculate an API for each affected basket pursuant to the following methodology:
(b) New services subject to price cap regulation must be included in the appropriate API calculations under paragraph (a) of this section beginning at the first annual price cap tariff filing following completion of the base period in which they are introduced. This index adjustment requires that the demand for the new service during the base period must be included in determining the weights used in calculating the API.
(c) Any price cap tariff filing proposing rate restructuring shall require an adjustment to the API pursuant to the general methodology described in paragraph (a) of this section. This adjustment requires the conversion of existing rates into rates of equivalent value under the proposed structure, and then the comparison of the existing rates that have been converted to reflect restructuring to the proposed restructured rates. This calculation may require use of carrier data and estimation techniques to assign customers of the preexisting service to those services (including the new restructured service) that will remain or become available after restructuring.
(d) The maximum allowable carrier common line (CCL) revenue shall be computed pursuant to the following methodology: