Sonus Networks Chosen by Tradingcom Europe for Voice Over WiFi Network Deployment

Sonus Networks Chosen by Tradingcom Europe for Voice Over WiFi Network Deployment

May 15, 2006

Sonus Signs First France-Based Service Provider

    CHELMSFORD, Mass., May 15 /Xinhua-PRNewswire/ -- Sonus
Networks, Inc. (Nasdaq: SONS), a leading supplier of
service provider Voice over IP (VoIP) infrastructure
solutions, announced today that Tradingcom Europe Group,
Europe's leading telecommunications capacities trader, has
selected a suite of IP Multimedia Subsystem (IMS)-ready
architecture solutions from Sonus as the foundation for
Tradingcom's complete, end-to-end IP-based voice network.
Tradingcom Europe, which primarily trades wholesale
telecommunications capacity with leading incumbent and
alternative carriers around the world, has deployed a
Sonus-based next generation network to improve operating
leverage from its wholesale business, as well as to broaden
its market reach by delivering a new Voice over WiFi
(VoWiFi) service.

    Headquartered in Paris, France, Tradingcom Europe has
deployed the GSX9000(TM) Open Services Switch, the PSX(TM)
Call Routing Server, and the ASX(TM) Access Server. In
addition, Tradingcom Europe is leveraging the Sonus Network
Border Switch(TM) (NBS) to connect directly and securely via
IP to other IP-based voice networks around the world. Sonus'
NBS provides direct IP-to-IP peering functionality in a
streamlined and cost-efficient manner, helping to improve
Tradingcom Europe's fundamental operating performance.

    "With IP technologies becoming more and more
pervasive in the voice world, building out our IP-based
voice network is a critical ingredient in our overall
growth strategy," said Arnaud Beauregard, Chairman and
CEO of Tradingcom Europe. "We selected Sonus as our
preferred partner because of their demonstrated history of
being able to rapidly deploy some of the world's most
successful IP-based voice networks, their ability to
service and support our network as we grow and scale, and
their solid vision for leveraging the potential of mobile
IMS-based networks such as fixed-mobile convergence (FMC)
applications and services."

    In the first phase of the deployment, Tradingcom will
leverage its Sonus-based infrastructure to support its
long-distance wholesale business, rerouting international
calls through the IP-based voice network, thereby
streamlining the minutes exchange process in a more
cost-efficient manner. In future phases, Tradingcom's
network will support WiFi-enabled mobile phones, allowing
consumers to connect directly to the IP-based voice
network, and eventually, roam between fixed and wireless
environments through an FMC service.

    Sonus, which currently has a regional sales and support
presence throughout several countries in Western Europe,
including the United Kingdom, France, Germany, and the
Czech Republic, has focused on developing its sales and
support presence throughout Europe to address the
burgeoning market opportunity. Tradingcom Europe, which is
initially deploying the Sonus-based network in Paris,
France, is the first French customer to choose Sonus as its
preferred partner for IP-based voice solutions.  

    "Sonus has a number of high profile deployments
throughout a number of companies in Europe, and we're
excited that with the addition of Tradingcom Europe,"
said Hassan Ahmed, chairman and CEO, Sonus Networks.
"Sonus is committed to aligning its resources against
the most promising market opportunities. In recent years,
Europe has emerged as one of the fastest growing markets
for IP-based voice, and we're encouraged that our early
efforts to build our reputation as a trusted provider of
the industry's most advanced solutions are yielding
results." 

    About Sonus Networks 

    Sonus Networks, Inc. is a leading provider of voice
over IP (VoIP) infrastructure solutions for wireline and
wireless service providers. With its comprehensive IP
Multimedia Subsystem (IMS) solution, Sonus addresses the
full range of carrier applications, including residential
and business voice services, wireless voice and multimedia,
trunking and tandem switching, carrier interconnection and
enhanced services. Sonus' voice infrastructure solutions
are deployed in service provider networks worldwide.
Founded in 1997, Sonus is headquartered in Chelmsford,
Massachusetts. Additional information on Sonus is available
at http://www.sonusnet.com .

    This release may contain forward-looking statements
regarding future events that involve risks and
uncertainties. Readers are cautioned that these
forward-looking statements are only predictions and may
differ materially from actual future events or results.
Readers are referred to the "Risk Factors"
section of Sonus' Annual Report on Form 10-K, dated March
14, 2006 and Quarterly Report on Form 10-Q, dated May 8,
2006, both filed with the SEC, which identify important
risk factors that could cause actual results to differ from
those contained in the forward-looking statements. Risk
factors include among others: the impact of material
weaknesses in our disclosure controls and procedures and
our internal control over financial reporting on our
ability to report our financial results timely and
accurately; the unpredictability of our quarterly financial
results; risks associated with our international expansion
and growth; consolidation in the telecommunications
industry; and potential costs resulting from ending
securities litigation against the company. Any
forward-looking statements represent Sonus' views only as
of today 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.

    The information in this press release is for
informational purposes only and is subject to change at
Sonus' sole discretion without notice. Sonus has no
obligation or commitment to develop or deliver any future
release, upgrade, feature, enhancement or function
described in this release. The information is provided
"AS IS," with all faults, and without any
warranties whatsoever, express or implied, including, but
not limited to, warranties of merchantability, performance,
or fitness for a particular purpose.

    Sonus is a registered trademark of Sonus Networks.  All
other company and product names may be trademarks of the
respective companies with which they are associated.

    For more information, please contact:

     Jocelyn Philbrook,
     Sonus Networks, Inc.
     Tel:   [phone]
     Email: [e-mail]

     Sarah McAuley,
     Sonus Networks, Inc.
     Tel:   [phone]
     Email: [e-mail]

SOURCE  Sonus Networks, Inc.