“Heading into 2012, we are very focused on improving our visibility and the level of predictability in the business in the backdrop of the current North American service provider capital expenditure environment,” said Peter J. Minihane, Chief Financial Officer of Acme Packet, Inc.Company to Host Live Conference Call The Company’s management team will host a live conference call at 5:00 p.m. eastern time today to discuss today’s announcement. The conference call may be accessed in the United States by dialing 1.800.288.8967 and using access code “APKT”. The conference call may be accessed outside of the United States by dialing +612.332.0630 and using access code “APKT”. The conference call will be simultaneously webcast on the Company’s investor relations website, which can be accessed at www.ir.acmepacket.com. A replay of the conference call will be available approximately two hours after the call by dialing 1.800.475.6701 or +1.320.365.3844 and using access code 231791 or by accessing the webcast replay on the Company’s investor relations website. About Acme Packet Acme Packet (NASDAQ: APKT), the leader in session delivery network solutions, enables the trusted, first-class delivery of next-generation voice, data and unified communications services and applications across IP networks. Our Net-Net product family fulfills demanding security, service assurance and regulatory requirements in service provider, enterprise and contact center networks. Based in Bedford, Massachusetts, Acme Packet designs and manufactures its products in the USA, selling them through over 200 reseller partners worldwide. More than 1,525 customers in 107 countries have deployed over 14,000 Acme Packet systems, including 90 of the top 100 service providers and 36 of the Fortune 100. For more information visit www.acmepacket.com. Acme Packet, Inc. Safe Harbor Statement 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, expected financial and operating results, expected growth rates, future stock-based compensation and amortization expenses, 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: the amount of stock-based compensation awarded; the applicable Company stock price used to determine stock-based compensation; the exercise pattern of employee stock options; difficulties expanding the Company’s customer base; difficulties leveraging market opportunities; difficulties providing solutions that meet the needs of customers; poor product sales; long sales cycles; difficulties developing new products; difficulties in relationships with vendors and partners; higher risks in international operations; difficulties managing rapid growth; difficulties managing the Company’s financial performance; the ability to hire and retain employees and appropriately staff operations; the Company’s cash needs; 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.