Sonus Networks Gains Footprint in the Middle East By Powering End to End Hosted VoIP Solution at Gateway Gulf

Leading Managed Services Provider In The Middle East Chooses Sonus Networks For Providing Turnkey VoIP Interconnect And Subscriber Services

WESTFORD, Massachusetts, May 3, 2010 - Sonus Networks, Inc. (Nasdaq: SONS), providing network transformation
through IP communications technology, today announced that Gateway Gulf, a
leading provider of managed data network and internet exchange services in
the Middle East, has chosen Sonus to deliver its core IP voice
interconnectivity and CLASS 5 consumer and business VoIP services. This is
the first major win for Sonus in the region. The Sonus solution will be
deployed across the Middle East, starting with Bahrain.

"Gateway Gulf is a well recognized name in the region, and continues to
grow and expand into new geographies in the emerging market," commented
Mohammed Shanableh, vice president, worldwide sales for Sonus Networks. "We
are extremely pleased that they have chosen Sonus for their complete VoIP
service offering, as this represents a new geographical presence for Sonus."

Gateway Gulf is the leading provider of High Tier Data Centers, hosting
Internet Exchanges, Teleport, Cloud Computing Platform and managed services
in the Middle East with presence in multiple countries. By adopting a unique
business model that focuses on carrier neutrality and integrating a core set
of offerings in its mission critical facilities in the region, Gateway Gulf
catalyzes businesses and economies in the developing world.

"Our aim is to bring the revolutionary benefits of connectivity enjoyed
by the developed world to emerging markets and we emphasize open access and
peering agreements for all customers. By adding the turn-key VoIP peering and
access solutions from Sonus, we hope to add SIP Trunking, VoIP interconnect
and subscriber feature services to our customers in the entire emerging
market," commented Mr. Tariq Husain, Chairman of Gateway Gulf. "Scalability
and manageability of the solution are key metrics for us when selecting a
vendor, given the rapid growth enjoyed by the region and Sonus stood out as
the one that could provide a complete, end to end offering while permitting
ease of operations."

Gateway Gulf will deploy the Sonus GSX9000(TM) Media Gateway, the Sonus
PSX(TM) Call Routing and Policy Server and the Sonus Network Border Switch
(NBS9000) for SIP Trunking, advanced VoIP peering and transcoding
capabilities. In addition, the Sonus ASX feature server will be deployed to
offer hosted CLASS 5 consumer and business features, and the entire solution
will be managed by the Sonus Insight(TM) Element Management System.

About Gateway Gulf

Gateway Gulf offers world-class teleport and secure colocation services
to Africa, the Near East, and the Middle East and is the first provider
connecting these regions to the rest of the world. The company boasts a
global network-neutral data center and carrier-neutral Internet exchange
services, offering safe and reliable information storage. Gateway Gulf uses
the latest in peering network technology, providing cost- effective services
that are unrivaled in convenience, capacity, flexibility, and reliability.
Its primary customer base includes global carriers, ISPs, Internet-related
businesses, educational and government institutions, and enterprises. Gateway
Gulf is headquartered in Manama, Kingdom of Bahrain.

About Sonus Networks

Sonus Networks Inc. is a leader in IP networking with proven expertise in
delivering secure, reliable and scalable next generation infrastructure and
subscriber solutions. With customers in over 50 countries across the globe
and over a decade of experience in transforming networks to IP, Sonus has
enabled service providers and enterprises to capture and retain users and
generate significant ROI. Sonus products include media and signaling
gateways, policy/routing servers, session border controllers and subscriber
feature servers. 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.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 Item 1A "Risk
Factors" of Sonus' Annual Report on Form 10-K for the year ended December 31,
2009, which identifies important risk factors that could cause actual results
to differ from those contained in the forward-looking statements. 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, except as required by
law.

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

    For more information, please contact:
    Aashu Virmani
    +1-978-614-8795
    avirmani@sonusnet.com

Aashu Virmani of Sonus Networks, Inc., +1-978-614-8795, avirmani at sonusnet.com