Conn. Agencies Regs. § 16-1-125
A new extended local calling route which otherwise meets the conditions set forth in these rules may be delayed in implementation by the Authority beyond the normal implementation interval, if it finds that the construction necessary to provide the route would conflict with a plan or program of modernization of telephone service equipment, either in progress or planned by the telephone company or companies that serve the exchanges involved. Such a conflict in a plan or program of modernization may be deemed to exist if a type or types of modification to equipment, required to provide extended local calling, would produce a payback rate, computed using standard financial accounting techniques, of less than or equal to 10 percent. The computation of the payback rate shall be limited to the term of the period before which equipment is to be replaced or modernized and to the estimated cost of the capital investment necessary to provide extended local calling service.
Conn. Agencies Regs. § 16-1-125