Okla. Stat. tit. 22, § 22-974: Testimony - How presented - Deposition of sick or infirm

witness.

The circumstances must be presented by the testimony of

witnesses examined in open court, except that when a witness is so

sick or infirm as to be unable to attend, his deposition may be

taken by a magistrate of the county out of court, at a specified

time and place, upon such notice to the adverse party as the court

may direct.