D.C. Mun. Regs. tit. 31, r. 31-339
Any party, pursuant to the procedures of § 338 may request the Chairperson to authorize a telephonic deposition of a witness not readily available to appear in person or of a witness beyond the effective territorial jurisdiction of the courts of the District of Columbia.
The telephonic deposition shall be tape recorded under the supervision of an appropriate official authorized to administer oaths in the District of Columbia. Following the tape recording of the deposition, the officer may cause it to be transcribed in accordance with the provisions of §§ 338.9 and 338.10.
The officer described in § 339.2 shall, upon the completion of his or her written transcription of the telephonic deposition, submit the document to the witness for his or her review and signature as provided in § 338.9. Such witness shall appear before a person authorized to administer oaths in the witness's state of residence or employment and shall, subject to such penalties of perjury as may be available in such jurisdiction, sign and certify the written transcription of the telephone deposition undertaken pursuant to this section.
D.C. Mun. Regs. tit. 31, r. 31-339