Acme Packet® (NASDAQ: APKT), the leader in session delivery network solutions, today announced that it will release financial results for the fourth quarter of 2011 on Thursday, February 2, 2012 after the market closes. The Company’s management team plans to host a live conference call and webcast at 4:30 p.m. eastern time on that day to discuss the financial results as well as management’s outlook for the business. The conference call may be accessed in the United States by dialing 1.800.230.1059 and using access code “APKT”. The conference call may be accessed outside of the United States by dialing +1.612.234.9959 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 234067 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.