Acme Packet Announces Resignation of Board Member Michael Thurk

Ace Packet, Inc. (NASDAQ: APKT), the leader in session border control solutions, enables the delivery of trusted, first-class interactive communications-voice, video and multimedia sessions-and data services across IP network borders. Our Net-Net family of session border controllers, multiservice security gateways and session routing proxies supports multiple applications in service provider, enterprise and contact center networks-from VoIP trunking to hosted enterprise and residential services to fixed-mobile convergence. They satisfy critical security, service assurance and regulatory requirements in wireline, cable and wireless networks; and support multiple protocols-SIP, H.323, MGCP/NCS, H.248 and RTSP-and multiple border points-service provider access and interconnect, and enterprise access and trunking. Over 10,000 Acme Packet systems have been deployed by more than 1,105 customers in 105 countries. They include 91 of the top 100 service providers in the world and 11 of the Fortune 25. For more information, contact us at +1 781.328.4400, or visit www.acmepacket.com.

Statements contained herein that are not historical fact may be forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. Such forward-looking statements may relate to, among other things, the ability to appoint a new director and regain compliance with the Nasdaq listing requirements, expected financial and operating results, expected growth rates, and to future business prospects and market conditions. Such forward-looking statements do not constitute guarantees of future performance and are subject to a variety of risks and uncertainties that could cause actual results to differ materially from those anticipated. These include, but are not limited to: difficulties expanding the Company's customer base; difficulty developing new products; difficulty managing rapid growth; difficulty managing the Company's financial performance; and the impact of new accounting pronouncements and increased competition. Additional factors that could cause actual results to differ materially from those projected or suggested in any forward-looking statements are contained in the Company's recent filings with the Securities and Exchange Commission, including those factors discussed under the caption "Risk Factors" in such filings.