Acme Packet Creates SIP Femtocell Ecosystem with Leading Solution Vendors

AirWalk Communications, Tatara Systems and Ubiquisys Deliver Tested,
Interoperable Products with Acme Packet`s Net-Net Product Family for
Next-Generation Femtocell Solutions
BOSTON--(Business Wire)--
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.

Acme Packet, Inc.
Media and Analyst Contact:
Joyce Wady, 919-554-3532 x2
joyce@connect2comm.com
or
Investor Relations:
Brian Norris, 781-328-4790
bnorris@acmepacket.com
or
AirWalk
Sharon Roberts, 469-484-4732
sroberts@airwalkcom.com
or
Ubiquisys
Ed Howson, +44 (0)7740 173051
ed.howson@temono.com
or
Tatara
Kelly Friedland, 978-206-0831
kfriedland@tatarasystems.com

Copyright Business Wire 2009