47 C.F.R. § 69.502

Projected revenues from the following shall be deducted from the base factor portion to determine the amount that is assigned to the Carrier Common Line element:

(a) End User Common Line charges, less any marketing expense revenues recovered through end user common line charges pursuant to § 69.156;

(b) Special Access surcharges; and

(c) Beginning July 1, 2002, the portion of per-line support that carriers receive pursuant to § 54.901 of this chapter; and

(d) Line port costs in excess of basic analog service pursuant to § 69.130.