ORS § 133.360
Whenever any person has been indicted or accused on oath of any public offense, or thereof convicted, and a warrant of arrest has been issued, the magistrate issuing the warrant, or any judge of the Supreme Court, or of the Court of Appeals, or of a circuit or county court, may indorse thereon an order signed by the magistrate or judge authorizing the service thereof by telegraph. Thereupon the warrant and order may be sent by telegraph to any marshal, sheriff, constable or police officer and on receipt of the telegraphic copy thereof, as defined in ORS 165.840, by any such officer, the officer shall have the same authority and be under the same obligations to arrest, take into custody and detain the person as if the original warrant of arrest with the proper direction for its service duly indorsed thereon had been placed in the hands of the officer. The telegraphic copy shall be entitled to full faith and credit and shall have the same force and effect in all courts and places as the original. Prior to indictment or conviction, no such order shall be made by any officer unless in the judgment of the officer there is probable cause to believe the accused person guilty of the offense charged, but the making of such order by any officer is prima facie evidence of the regularity thereof and of all proceedings prior thereto. The original warrant and order, or a copy thereof certified by the officer making the order, shall be preserved in the telegraph office from which the same is sent and in telegraphing the same, the original or the certified copy may be used.
ORS 133.360