Sonus Networks is Delisted from Nasdaq

The Nasdaq Stock Market will delist Sonus Networks’ stock effective as of the opening of the market on Friday, August 13, 2004. Nasdaq denied the company’s request for additional time to file its Form 10-Q for the period ended June 30, 2004. Sonus Networks has sought additional time to complete its recent detailed financial review and restate its historical financial result. The company expects that its stock will be quoted on the National Quotation Service Bureau (the “Pink Sheets”) for trading once it has filed its Form 10-Q for the quarter ended June 30, 2004. http://www.sonusnet.com