Oregon Revised Statutes Procedure in Criminal Matters Generally § 135.760

(1) Any inmate in the custody of the Department of Corrections or of the supervisory authority of a county pursuant to a commitment under ORS 137.124 (2) against whom there is pending at the time of commitment or against whom there is filed at any time during imprisonment, in any court of this state, an indictment, information or criminal complaint charging the inmate with the commission of a crime, may give written notice to the district attorney of the county in which the inmate is so charged requesting the district attorney to prosecute and bring the inmate to trial on the charge forthwith.

(2) The notice provided for in subsection (1) of this section shall be signed by the inmate and set forth the place and term of imprisonment. A copy of the notice shall be sent to the court in which the inmate has been charged by indictment, information or complaint.