Exhibit 23.1 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We hereby consent to the Incorporation by reference in the Registration Statements on Form S-8 (Nos. 333-92326, 333-117148 and 333-118728) of Motient Corporation and Subsidiaries of our report dated March 30, 2005 relating to the consolidated financial statements and financial statement schedule, which appears in this Form 10-K /s/ FREIDMAN LLP - ---------------- East Hanover, New Jersey March 30, 2005