§  51.511   Forward-looking economic cost per unit.

   (a) The forward-looking economic cost per unit of an element equals the
   forward-looking economic cost of the element, as defined in §  51.505,
   divided by a reasonable projection of the sum of the total number of
   units of the element that the incumbent LEC is likely to provide to
   requesting telecommunications carriers and the total number of units of
   the element that the incumbent LEC is likely to use in offering its own
   services, during a reasonable measuring period.

   (b)(1) With respect to elements that an incumbent LEC offers on a
   flat-rate basis, the number of units is defined as the discrete number
   of elements (e.g., local loops or local switch ports) that the
   incumbent LEC uses or provides.

   (2) With respect to elements that an incumbent LEC offers on a
   usage-sensitive basis, the number of units is defined as the unit of
   measurement of the usage (e.g., minutes of use or call-related database
   queries) of the element.

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