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Hutchison 3G Austria Selects Sonus Session Border Controllers To Improve Network Quality of Service and Aid Future Capability

  Hutchison 3G Austria Selects Sonus Session Border Controllers To Improve
  Network Quality of Service and Aid Future Capability

 Austria’s Fastest-Growing Mobile Operator Chooses Sonus To Provide Scalable
                      SIP Interconnect To Other Carriers

Key Takeaways:

  *Hutchison 3G Austria (H3G) has selected the Sonus^® SBC 5000 series of
    session border controllers (SBCs) to enable improved quality of service to
    its growing 3G mobile subscriber base.
  *Sonus SBCs were chosen by H3G for their scalability and ability to provide
    security, media switching and transcoding services in a single, easy to
    manage device.
  *By implementing Sonus solutions for SIP interconnect, H3G is able to
    reduce operational costs while future-proofing the scalability of their
    session initiation protocol (SIP) infrastructure.

Business Wire

WESTFORD, Mass. -- November 09, 2012

Sonus Networks, Inc. (Nasdaq: SONS), a global leader in SIP communications,
today announced that Hutchison 3G Austria (H3G), the first mobile multimedia
operator in Austria, has selected the Sonus SBC 5000 series of session border
controllers (SBCs) as the SIP interconnect platform from their mobile core
network. As the enabling technology of SIP, Sonus SBCs will help H3G to
deliver an improved quality of service to its growing base of 1.4 million
subscribers by enhancing network reliability and security while providing a
foundation to deploy future SIP-based applications and services.

H3G selected the Sonus Session Border Controller 5200 and Sonus Session Border
Controller 5100 following a rigorous competitive proof of concept. H3G’s
selection of Sonus marks the beginning of a new relationship between the two
companies.

The Sonus SBC 5000 series combines security, media switching and transcoding
services in a single scalable device, and is designed to provide an
intelligent interconnection between H3G and their partner networks. The Sonus
SBC 5100 delivers 250 to 10,000 sessions and the Sonus SBC 5200 supports up to
64,000 sessions on a single server. H3G selected Sonus to secure the network
border, enforce quality of service policies, traverse intermediate network
address translation (NAT) and firewalls, ensure regulatory compliance, deliver
the essential transcoding of media and provide codec, dual-tone
multi-frequency (DTMF) and fax interworking. The Sonus SBC portfolio is the
fastest growing on the market and the Sonus SBC 5200 has more than twice the
capacity of the leading competitor.

Quotes:

“Our business is growing at a tremendous rate and we needed a solution that we
could be confident would be able to scale as we need it, without compromising
on performance,” said Rico Chemnitz, head of IT core network at H3G Austria.
“The proof of concept proved that Sonus’ SBCs more than exceeded our near-term
requirements, as well as providing us with a platform to deliver new SIP-based
capabilities in the future. We see Sonus as a valuable partner to our future
growth.”

“H3G’s selection of Sonus solutions underlines the increasing understanding
that significant businesses in EMEA, like H3G, have that the future lies in
SIP,” said Serge Adam, vice president EMEA at Sonus. “The Sonus SBC 5000
series is designed to deliver the next-generation needs of SIP communications
by delivering interworking, embedded media transcoding, robust security and
advanced call routing in a high-performance, small form-factor device.”

Other Facts:

  *H3G is the fastest growing mobile operator in Austria and a subsidiary of
    Hutchison Whampoa Limited, a $25 billion conglomerate employing 250
    million people over 52 countries.
  *In 2011, H3G was named “Best Network In Austria” after scoring the highest
    ever Connect-Test rating. H3G Austria also achieved the highest 3G network
    ranking across Europe’s German-speaking region.
  *In October 2012, H3G maintained its number one position in the
    Connect-Test network performance testing, achieving a score of 466 out of
    500 points.
  *The Sonus SBC 5100 and Sonus SBC 5200 have been performance verified by
    Miercom. To access the reports visit www.sonus.net/miercom.
  *Sonus has been the fastest-growing SBC vendor in the service provider
    market since 2011 with industry leading 13.3% share point gain since 1Q’11
    (source: Infonetics Service Provider VoIP Equipment and Subscribers,” 2Q12
    report).
  *Sonus recently published the first-edition of the Session Border
    Controllers For Dummies^® reference book in partnership with John Wiley &
    Sons, Inc.
  *The Sonus SBC 5200 recently received the “2012 NGN Leadership Award”
    presented by the TMC publications INTERNET TELEPHONY and Next Gen
    Mobility.

Additional Resources:

  *Download a complimentary copy of Session Border Controllers For Dummies,
    Sonus Special Edition by John Wiley & Sons, Inc., the publisher of the For
    Dummies^®  book series
  *Sonus SBC 5100 Session Border Controller: Product information and
    resources
  *Sonus SBC 5200 Session Border Controller: Product information and
    resources

Tags/Keywords:

Sonus, SONS, H3G, Hutchison 3G Austria, 3, SBC, SBC 5100, SBC 5200, session
border controller, SIP, SIP trunking, IP, media transcoding, IT priorities, IT
cost savings, Cloud VoIP communications, session management, employee
productivity, SIP-based solutions, VoIP, interconnect, quality of service,
firewall.

About Sonus Networks:

Sonus helps the world's leading communications service providers and
enterprises embrace the next generation of SIP-based solutions including VoIP,
video and Unified Communications through secure, reliable and scalable IP
networks. With customers around the globe and 15 years of experience
transforming networks to IP, Sonus has enabled service providers and
enterprises to capture and retain users and generate significant ROI. Sonus
products include session border controllers, policy/routing servers,
subscriber feature servers and media and signaling gateways. Sonus products
are supported by a global services team with experience in design, deployment
and maintenance of some of the world's largest and most complex IP networks.
For more information, visit www.sonus.net or call 1-855-GO-SONUS.

About Hutchison 3G Austria:

Hutchison 3G Austria GmbH is wholly owned by Hutchison Whampoa Limited in Hong
Kong and started in May 2003 with the brand 3 as the first sole UMTS-provider
in Austria. With 94% UMTS-coverage, the 3MegaNetwork is Austria‘s largest
UMTS-network and covers 99% of the Austrian population with basic services. 3
aims to make the most modern mobile communication services available to
customers – innovative, easily comprehensible and with an outstanding
price-performance ratio. Voice telephony in HD-quality, mobile broadband
internet, numerous multimedia-proposals like 3MobileTV and the best network in
Austria are among the most attractive offerings of 3. The 3MegaNetwork has won
the connect-test twice (2011 and 2012), which has certified 3 as the best
network in Austria. Hutchison 3G Austria GmbH has1.5 million customers (as per
July 2012) and the 3group has 22.23 million customers in Europe as a whole (as
per July 2012).

Important Information Regarding Forward-Looking Statements:

The information in this release may contain certain forward-looking statements
within the meaning of the U.S. Private Securities Litigation Reform Act of
1995 regarding future events that involve risks and uncertainties. Although
Sonus believes that its expectations are based on reasonable assumptions,
readers are cautioned that these forward-looking statements are only
predictions and are subject to inherent uncertainties, risks and changes in
circumstances that are difficult to predict. All statements other than
statements of historical facts contained in this report are forward-looking
statements. Our actual results may differ materially from those contemplated
by the forward-looking statements. For further information regarding risks and
uncertainties associated with Sonus’ business, please refer to the
“Management’s Discussion and Analysis of Financial Condition and Results of
Operations” and “Risk Factors” sections of Sonus’ filings with the Securities
and Exchange Commission. Any forward-looking statements represent Sonus' views
only as of the date on which such statement is made, and should not be relied
upon as representing Sonus' views as of any subsequent date. While Sonus may
elect to update forward-looking statements at some point, Sonus specifically
disclaims any obligation to do so, except as required by law.

Contact:

For Sonus:
Alison Steel, +44 782-550-8333
asteel@sonusnet.com
or
For Hutchison 3G Austria:
Maritheres Paul, +43 (0) 50 660 33700
Head of Corporate Communications
maritheres.paul@drei.com