Okla. Stat. tit. 18, § 18-438.29: Foreign nonprofit or cooperative corporation -

Extensions of lines into state.

Any foreign nonprofit or cooperative corporation furnishing or

authorized to furnish communication services and owning or operating

communication lines or facilities in an adjacent state may construct

or acquire extensions of such lines in this state and operate such

extensions by complying with the statutes of this state pertaining

to the qualifications of foreign corporations for the doing of

business in this state. Thereafter, such corporation shall have all

the rights, powers, privileges and immunities of a cooperative

organized under this act.