· Principle No. 1: Long run implies a period long enough that all costs are variable.

· Principle No. 2: Cost causation is a key concept in incremental costing.

· Principle No. 3: The increment being studied shall be the entire quantity of the service provided, not some small increase in demand.

· Principle No. 6: Technology used in a long run incremental cost study should be the least-cost, most efficient technology that is currently available for purchase. This principle assumes that a TSLRIC analysis should be based on the existing or planned location of switching and outside plant facilities using the least-cost, most efficient technology.

· Principle No. 7: Costs shall be forward looking.


As for an embedded-cost methodology, the problem with a method that relies in any part on historical cost, the cost the incumbents say they actually incur in leasing network elements, is that it will pass on to lessees the difference between most-efficient cost and embedded cost. Any such cost difference is inefficiency, whether caused by poor management resulting in higher operating costs or poor investment strategies that have inflated capital and depreciation. If leased elements were priced according to embedded costs, the incumbents could pass these inefficiencies to competitors in need of their wholesale elements, and to that extent defeat the competitive purpose of forcing efficient choices on all carriers whether incumbents or entrants. The upshot would be higher retail prices consumers would have to pay. (Verizon, 122 S.Ct. at 1673.) (Citations and footnotes omitted.)

1. Reasonably understand how costs are derived by:

    a. Providing access to all interested parties to the model and all underlying data, formulae, computations, software, engineering assumptions, and outputs; and

    b. Allowing interested parties to examine and modify the critical assumptions and engineering principles.

2. Generally replicate the cost model or cost study calculations; and


3. Propose changes in inputs and assumptions in order to modify the costs produced.23

22 The CCPs were developed to support the Total Service Long Run Incremental Cost (TSLRIC) methodology, which derives costs based on services offered rather than network elements. The principles are also considered applicable to TELRIC analyses. 23 Scoping Memo for Consolidated 2001/2002 UNE Reexamination for Pacific Bell Telephone Company, 6/12/02, p. 16.

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