Oregon Revised Statutes Utility Regulation § 759.375

(a) Sell, lease, assign or otherwise dispose of the whole of the property of such telecommunications utility necessary or useful in the performance of its duties to the public or any part thereof of a value in excess of $100,000, or sell, lease, assign or otherwise dispose of any franchise, permit or right to maintain and operate such telecommunications utility or telecommunications utility property, or perform any service as a telecommunications utility;

(b) Mortgage or otherwise encumber the whole or any part of the property of such telecommunications utility necessary or useful in the performance of its duties to the public, including any franchise, permit or right to maintain and operate such telecommunications utility or telecommunications utility property, or perform any service as a telecommunications utility; or

(c) By any means whatsoever, directly or indirectly, merge or consolidate any of its lines, plant, system or other property whatsoever, or franchise or permit to maintain or operate any telecommunications utility property, or perform any service as a telecommunications utility, or any part thereof, with any other public utility or telecommunications utility.