34 C.F.R. § 361.51
(c) Special communication needs personnel. The designated State unit must ensure that providers of vocational rehabilitation services are able to communicate—
(2) By using appropriate modes of communication used by applicants and eligible individuals.
(Approved by the Office of Management and Budget under control number 1205-0522)
(Authority: Sections 12(c) and 101(a)(6)(B) and (C) of the Rehabilitation Act of 1973, as amended; 29 U.S.C. 709(c) and 721(a)(6)(B) and (C))