EXHIBIT 16.1 Office of the Chief Accountant Securities and Exchange Commission 450 Fifth Street, N.W. Washington, D. C. 20549 June 19, 2002 Dear Sir/Madam: We have read the first, second, and third paragraphs of Item 4 included in the Form 8-K dated June 13, 2002, of Interphase Corporation to be filed with the Securities and Exchange Commission and are in agreement with the statements contained therein. Very truly yours, ARTHUR ANDERSEN LLP By Mark D. Kemp CAB cc: Mr. Steve Kovac, Interphase Corporation