Oregon Revised Statutes Utility Regulation § 759.240

(1) The Public Utility Commission shall ascertain and prescribe for each kind of telecommunications utility suitable and convenient standard commercial units of service. These shall be lawful units for the purposes of this chapter.

(2) The commission shall ascertain and fix adequate and serviceable standards for the measurement of quality, pressure, initial voltage or other conditions pertaining to the supply of the service rendered by any telecommunications utility and prescribe reasonable regulations for examination and testing of such service and for the measurement thereof. It shall establish reasonable rules, regulations, specifications and standards to secure the accuracy of all meters and appliances for the measurements, and every telecommunications utility is required to carry into effect all orders issued by the commission relative thereto.