47 CFR § 69.408
All other customer services expenses in Account 6620
February 16, 2021
All other customer services expenses shall be apportioned among the Interexchange category, the billing and collection category and all access elements based on the combined expenses in §§69.404 through 69.407.
[52 FR 37313, Oct. 6, 1987, as amended at 54 FR 3456, Jan. 24, 1989]