PCCW Deploys Acme Packet Session Border Controllers for its Next Generation Network

Largest service provider in Hong Kong secures residential VoIP services and
maximizes service reach using Acme Packet Net-Net session border controllers

BURLINGTON, Mass.--(Business Wire)--
Acme Packet (NASDAQ: APKT), the leader in session border control solutions,
today announced that PCCW Ltd., the largest integrated wired and wireless
communications service provider in Hong Kong, has deployed Acme Packet`s Net-Net
session border controllers (SBCs) as part of a next-generation network migration
plan. Net-Net 4500 SBCs are deployed at major access network aggregation points
to provide security and maximize the reach of PCCW`s residential VoIP services.

PCCW is a quadruple-play service provider in Hong Kong offering wireless,
wireline, IPTV and Internet services to business and residential customers. PCCW
currently has more than 2.5 million business and residential lines in service
and plans to expand its service portfolio using the next-generation network in
the future.

At PCCW`s access borders, Net-Net 4500 SBCs provide extensive security and
control capabilities to protect and optimize its VoIP network. Acme Packet`s
Net-SAFE security framework provides protection against DoS/DDoS attacks and
overloads, while topology hiding and access control lists keep unauthorized and
malicious traffic from disrupting service availability. Adaptive hosted NAT
traversal eliminates the roadblocks to incoming calls created by premise-based
NAT devices and firewalls. Acme Packet`s SIP signaling normalization allows
PCCW`s multi-vendor network to smoothly interoperate, maximizing its service
reach.

"The migration to our next-generation network will enable us to deliver
compelling IP communication services to our customers," said Hermes Lin, project
manager and technical head, NGN project for PCCW. "Acme Packet SBCs are critical
to this transformation by enabling rapid interoperability among our multi-vendor
network elements and delivering comprehensive security and service assurance
features to support our IP communication services today and in the future."

"PCCW is delivering innovative quadruple-play services to millions of customers
in Hong Kong," said Seamus Hourihan, Acme Packet`s vice president of marketing
and product management. "Acme Packet`s SBCs play a pivotal role in helping solve
the challenges that PCCW faces as the company delivers high-quality IP
communication services over its next-generation network."

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, 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, H.248 and RTSP-and multiple border points-service provider
access and interconnect, and enterprise access and trunking. Our products have
been selected by more than 675 customers in 95 countries. They include 29 of the
top 30, and 89 of the top 100 service providers in the world; and 6 of the
Fortune 25. For more information, contact us at +1 781.328.4400, or visit
www.acmepacket.com.

About PCCW Limited

PCCW Limited (SEHK:0008) is the holding company of HKT Group Holdings Limited
(HKT), Hong Kong's premier telecommunications provider and a world-class player
in Information and Communications Technologies. PCCW also holds a majority
interest in Pacific Century Premium Developments Limited, and overseas
investments including the wholly-owned UK Broadband Limited.

As the provider of Hong Kong's first quadruple-play experience, PCCW/HKT offers
a range of innovative media content and services across four
platforms-fixed-line, broadband Internet access, TV and mobile. In addition, the
Group meets the sophisticated needs of the international business community,
while supporting network operators with cutting-edge technical services and
handling large-scale IT outsourcing projects for public and private sector
organizations. To learn more about PCCW and HKT, please visit www.pccw.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, 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.

Media and Industry Analysts:
Connect2 Communications
Elizabeth Starr Miller, 847-223-2653
elizabeth@connect2comm.com
or
Investor Relations:
Acme Packet
Brian Norris, 781-328-4790
bnorris@acmepacket.com

Copyright Business Wire 2009