83 Ill. Adm. Code 791.60
General Cost Study Components
Section 791
Section 791.60 General Cost
Study Components
a) Service description. Each cost study shall include a
definition of the service being studied. This definition shall be in terms of
technical characteristics, functionality, application, targeted market, and
availability. The elements of the service shall also be defined.
b) Demand Information. The carrier shall provide the demand
figures and/or forecasts used in the LRSIC computations and an explanation
detailing the explicit and implicit assumptions and methods used to derive the
figures and/or forecasts. Demand forecasts for new services shall reflect
total demand for the service, averaged over the projected revenue producing
life of the service.
c) Revenue life. Each cost study shall identify and provide a
basis for the projected revenue producing life of the service or group of
services.
d) Economic life. Each cost study shall identify and provide a
basis for the projected economic life of the equipment involved in providing
the service or group of services.
e) Input prices. Each cost study shall reflect input prices
(e.g., the prices for materials, labor, and capital) that the carrier is
actually expected to face. The carrier shall provide the underlying bases for
projected changes in input price levels, using, wherever possible, projections
based on market expectations and rates set in labor contracts. Where
appropriate, costs shall be based on prevailing vendor prices or vendor prices
under consideration that reflect volume discounts or term discounts off listed
input prices. These discounts shall be reflected in the cost study.
f) Factors. Whenever any factors are used to estimate costs,
such as maintenance or labor costs, the basis for those factors shall be
described in an annual filing with the Manager of the Telecommunications Division
of the Illinois Commerce Commission. Factors shall be based upon historical
costs only to the extent that it can be demonstrated that those historical
costs are relevant to the study of forward-looking costs. Any deviations in
individual cost studies from factors filed on an annual basis shall be
identified and explained in each cost study.
g) Volume-insensitive costs. To the fullest extent possible,
volume-insensitive costs shall be directly attributed to particular services
or, where shared by a group of services, to that group of services.
h) Volume-sensitive costs. Volume-sensitive costs shall be
directly attributed to the service that causes the costs.
i) The cost study shall include all relevant service-specific
start-up costs, including installation costs.