(a) That prescribed in the public schedules or tariffs then in force or established; or
(b) It charges, demands, collects or receives from any other person for a like and contemporaneous service under substantially similar circumstances. A difference in rates or charges based upon a difference in classification pursuant to ORS 759.210 shall not constitute a violation of this paragraph.
(2) Any telecommunications utility violating this section is guilty of unjust discrimination. [1987 c.447 §46; 1989 c.5 §22; 1993 c.18 §165]