Section 51.509 - Rate structure standards for specific elementsIn addition to the general rules set forth in § 51.507 , rates for specific elements shall comply with the following rate structure rules.
(a)Local loop and subloop. Loop and subloop costs shall be recovered through flat-rated charges.(b)Local switching. Local switching costs shall be recovered through a combination of a flat-rated charge for line ports and one or more flat-rated or per-minute usage charges for the switching matrix and for trunk ports.(c)Dedicated transmission links. Dedicated transmission link costs shall be recovered through flat-rated charges.(d)Shared transmission facilities between tandem switches and end offices. The costs of shared transmission facilities between tandem switches and end offices may be recovered through usage-sensitive charges, or in another manner consistent with the manner that the incumbent LEC incurs those costs.(e)Tandem switching. Tandem switching costs may be recovered through usage-sensitive charges, or in another manner consistent with the manner that the incumbent LEC incurs those costs.(f)Signaling and call-related database services. Signaling and call-related database service costs shall be usage-sensitive, based on either the number of queries or the number of messages, with the exception of the dedicated circuits known as signaling links, the cost of which shall be recovered through flat-rated charges.(g)Collocation. Collocation costs shall be recovered consistent with the rate structure policies established in the Expanded Interconnection proceeding, CC Docket No. 91-141.(h)Network interface device. An incumbent LEC must establish a price for the network interface device when that unbundled network element is purchased on a stand-alone basis pursuant to § 51.319(c) .61 FR 45619, Aug. 29, 1996, as amended at 68 FR 52306 , Sept. 2, 2003