Acme Packet Creates SIP Femtocell Ecosystem with Leading Solution Vendors

Acme Packet® (NASDAQ: APKT), the leader in session border control solutions, today announced partnerships and alliances with leading next-generation equipment vendors for SIP-based femtocell solutions. The solutions, which have demonstrated proven interoperability, feature Acme Packet’s multiservice security gateway and session border controller (SBC) working with products from AirWalk Communications, Tatara Systems and Ubiquisys. Together, Acme Packet and its SIP femtocell ecosystem members deliver an open, industry standard-based SIP femtocell solution for mobile service providers.

Acme Packet’s multiservice security gateway, the Net-Net® Security Gateway (SG), provides the femtocell security gateway function which establishes and controls IPsec tunnels to securely deliver mobile voice and data services over untrusted Internet access networks to femtocell access points. Acme Packet’s SBC, the Net-Net Session Director (SD), secures the SIP/IMS service infrastructure, assures SLAs for high service availability and quality and provides compliance with regulatory requirements, such as lawful intercept and emergency session control. The Net-Net SG and SD can be deployed separately or integrated on the same physical hardware platform.

To round out the SIP femtocell solution, Acme Packet has established partnerships and alliances with three companies that provide complementary premise-based and network-based products. The initial SIP femtocell ecosystem members are:

AirWalk Communications is a leading developer of IP-based CDMA radio access network products that deliver 3G voice and data in the most compact and versatile devices. AirWalk’s EdgePoint is a compact CDMA femtocell that provides premier cellular service inside buildings and at the edge of macro networks for consumers or enterprises.

Tatara Systems is a leader in IMS and SIP-based femtocell convergence solutions. The Tatara Convergence Server (TCS) solution enables the interconnection of femtocells and other advanced technology IP-based radio network elements with the legacy macro network, providing the full mobile voice, messaging and data experience in an IP environment supporting both VoIP and IMS networks. The TCS capabilities include authentication of the mobile subscribers, handoff between femtocells and the macro network, E-911 and supplementary services, as well as delivering new IP-based applications to existing mobile handsets without modifying or disrupting the macro network. The TCS is available in a CDMA or GSM/UMTS variant.

Ubiquisys is a leading provider of 3G femtocells. The ZoneGate UMTS femtocell serves residential and enterprise markets with field-proven interference mitigation, SIP/IMS compatibility and services APIs to enable operators to expand coverage and capacity while introducing femtocell services. Ubiquisys earned ABI Research’s #1 femtocell vendor award in 2009 for the 3rd straight year based on innovation and implementation.

For trials and early deployments, the predominant architecture for femtocells leverages legacy mobile switching center (MSC) infrastructure and signaling protocols. However, as service providers continue their voice services migration to VoIP and IP Multimedia Subsystem (IMS) architectures, SIP-based femtocells—for both residential and enterprise subscribers—are expected to become more prevalent. IMS-based femtocells architectures are currently being defined by the Femto Forum and 3GPP.

"The key elements for delivering SIP femtocells are ready today—including convergence servers, femtocell access points, security gateways and session border controllers,” stated Marc Cremer, executive vice president of operations, Tatara Systems. "Acme Packet provides key components for femtocell access and together our companies are delivering a solution that is interoperable and ready for deployment.”

"Acme Packet has long worked with like-minded companies to enable secure and reliable next generation communication services,” said Mark Vella, Acme Packet’s vice president of business development. "AirWalk, Tatara and Ubiquisys complement Acme Packet’s session border controllers and multiservice security gateways in delivering a best-of-breed SIP femtocell solution.”

Demonstrations of the SIP CDMA femtocell have taken place at Acme Packet’s customer conference Interconnect 2008 and Mobile World Congress 2009. Both UMTS and CDMA SIP femtocell solutions will be demonstrated at the upcoming International CTIA Wireless 2009® tradeshow and conference in multiple booths: Acme Packet (#5741), Tatara Systems (#8951) and Ubiquisys (#8333).

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 635 customers in 92 countries, including 29 of the top 30, and 89 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 build and grow Acme Packet, the benefits and expected deployments of our products or services, the ability for our partnerships and alliances to deliver services and products, 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, 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.