Iowa Admin. Code r. 641-33.20
The presiding officer may, on the officer's own motion or as requested by a party, order hearings or argument to be held by telephone conference or other electronic means in which all parties have an opportunity to participate. The presiding officer will determine the location of the parties and witnesses for telephone or other electronic hearings. The convenience of the witnesses or parties, as well as the nature of the case, will be considered when location is chosen. Disciplinary hearings will generally not be held by telephone or electronic means in the absence of consent by all parties, but the presiding officer may permit any witness to testify by telephone. Parties shall disclose at or before the prehearing conference if any witness will be testifying by telephone. Objections, if any, shall be filed with the board and served on all parties at least three business days in advance of hearing.
Iowa Admin. Code r. 641-33.20