S.D. Admin. R. 20:10:29:16.03
Tandem-switched transport consists of two rate elements, a tandem-switched transport transmission charge and a tandem switching charge.
A tandem-switched transport transmission charge expressed in dollars and cents per access minute is assessed on all interexchange carriers and other persons that use the carrier's carrier's tandem-switched transport facilities. Tandem-switched transport transmission charges generally are presumed reasonable if the carrier's carrier bases the charges on a weighted per-minute equivalent of direct-trunked transport DS1 and DS3 rates that reflect the relative number of DS1 and DS3 circuits used in the tandem to end office links, or a surrogate based on the proportion of copper and fiber facilities in the interoffice network, calculated using a loading factor of 9000 minutes per month per voice-grade circuit. Tandem-switched transport transmission charges may be distance sensitive. Mileage is measured as airline mileage between the serving wire center and the end office, unless the customer has ordered tandem-switched transport between the tandem office and the end office, in which case mileage is measured as airline mileage between the tandem office and the end office. If the carrier's carrier employs distance sensitive rates, a distance sensitive component is assessed for use of the transmission facilities, including intermediate transmission circuit equipment between the end points of the interoffice circuit and a nondistance sensitive component is assessed for use of the circuit equipment at the ends of the interoffice transmission links.
A tandem switching charge expressed in dollars and cents per access minute is assessed on all interexchange carriers and other persons that use the carrier's carrier's tandem switching facilities. The tandem switching charge is set to recover the annual intrastate interexchange tandem revenue requirement. A carrier's carrier may set the tandem switching charge to recover at least the direct costs of tandem switching plus a reasonable contribution level if it can demonstrate to the commission that the annual tandem revenue requirement fails to recover the direct costs.
S.D. Admin. R. 20:10:29:16.03
General Authority: SDCL 49-1-11, 49-31-5, 49-31-18.
Law Implemented: SDCL 49-31-18.
Tandem-switched transport and tandem charge, 47 C.F.R. § 69.111 (1993).