Acme Packet Interconnects Korea Telecom Internationally.

KT Leverages Acme Packet's Net-Net Session Border Controllers to Deliver a Trusted, First-Class International Peering Service

BURLINGTON, Mass. -- Acme Packet[R] (NASDAQ: APKT), the leader in session border control solutions, today announced that Korea Telecom (KT), Korea's largest integrated wired and wireless communications service provider, has selected Acme Packet Net-Net[R] session border controllers (SBCs) for its international VoIP peering service. With this latest selection, Acme Packet's Net-Net SBCs are currently deployed to support five VoIP and IMS projects at KT.

An Acme Packet customer since 2005, KT uses Acme Packet SBCs to support its residential and business VoIP services and domestic VoIP interconnects. After successful trials in 2007, Acme Packet's Net-Net SBCs were chosen for KT's international VoIP interconnect service, which went into production earlier this year. KT is using the Net-Net Session Director, deployed in KT's international switching center in Seoul, to securely interconnect with over 30 domestic and international service providers.

At the interconnect borders with its wholesale customers, Acme Packet's Net-Net SBCs satisfy KT's critical security, service reach maximization, SLA assurance and revenue and cost optimization requirements. At these borders, Net-SAFE[R], Acme Packet's security framework, provides denial of service attack prevention, access control and topology hiding required to protect KT's VoIP core network. The Net-Net SBCs also mediate differences between VoIP networks, including bridging overlapping IP address spaces and interworking and normalizing signaling protocols. Using SIP and H.323 signaling, as well as SIP-H.323 interworking, on Acme Packet's SBCs, KT is able maximize the number of networks it can connect to and minimize required changes to its core VoIP network.

"From years of experience using Acme Packet's session border controllers, KT is very familiar with the comprehensive security and control features they provide to our network," said Eun-Sik Shin, Director, Network Group, for KT. "By taking advantage of KT's strong global presence and the controls provided by Acme Packet's SBCs, our domestic and international service provider customers can lower costs by leveraging our IP service infrastructure."

"Large, international service providers like KT are accelerating the worldwide trend of offering VoIP interconnects to other service providers for PSTN or IP termination, bringing cost savings and increased revenue opportunities to both," said Seamus Hourihan, vice president of marketing and product management. "By using Acme Packet's Net-Net SBCs, KT is widening the reach of its interconnect offering while ensuring that its network is protected from attacks and overloads."

About Acme Packet

Acme 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, large 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 and H.248--and multiple border points--interconnect, access and data center. Our products have been selected by more than 540 customers in 85 countries, including 29 of the top 30, and 84 of the top 100 service providers in the world. For more information, contact us at +1 781.328.4400, or visit www.acmepacket.com.

Acme Packet 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, among other things, to our position in the session border control market, our expected financial and operating results, our ability to establish and maintain intellectual property rights, our ability to build and grow Acme Packet, the benefits and advantages of our products, including any enhancements or new features, services and programs, and our ability to achieve our goals, plans and objectives. Such forward-looking statements do not constitute guarantees of future performance and are subject to a variety of risks and uncertainties that could cause our actual results to differ materially from those anticipated. These include, but are not limited to: difficulties in growing our customer base, difficulties leveraging market opportunities, difficulties providing solutions that meet the needs of customers, migration of voice to an IP networks architectures, poor product sales, long sales cycles, difficulty developing new products, difficulty in relationships with vendors and partners, higher risk in international operations, difficulty managing rapid growth, and increased competition. Additional factors that could cause actual results to differ materially form those projected or suggested in any forward-looking statements are contained in our recent filings with the Securities and Exchange Commission, including those factors discussed under the caption "Risk Factors" in such filings.