Plant-specific operations expenses in accounts 6110 and 6120 are apportioned among the interexchange category, the billing and collection category, the special access category, and applicable switched access elements on the following bases:
S.D. Admin. R. 20:10:29:32
General Authority: SDCL 49-1-11, 49-31-5, 49-31-18.
Law Implemented: SDCL 49-31-18.
Network support expenses, 47 C.F.R. § 32.6110 (1991). General support expenses, 47 C.F.R. § 32.6120 (1991). Direct expenses, 47 C.F.R. § 69.401(a) (1991).