to a letter rogatory and may prescribe the practice and procedure, which may be wholly or in part the practice and procedure of the tribunal outside this state, for taking the testimony or statement or producing the documents or other things. To the extent that the order does not prescribe otherwise, the practice and procedure shall be in accordance with that of the court of this state issuing the order. The order may direct that the testimony or statement be given, or document or other thing produced, before a person appointed by the court. The person appointed shall have power to administer any necessary oath. A person within this state may voluntarily give his testimony or statement or produce documents or other things allowing inspections and copies and permit physical and mental examinations for use in a proceeding before a tribunal outside this state.
Ind. R. Trial. P. 28