THE BAHAMAS LEAPS FORWARD WITH NEXT GENERATION NETWORK FROM SONUS NETWORKS

Westford, MA., May 23, 2008 - Sonus Networks, Inc. (Nasdaq: SONS), a market leader in IP
communications infrastructure, and The Bahamas Telecommunications
Company Limited (BTC) have signed an agreement to bring a next
generation communications network to The Bahamas. This is a major
advancement in the convergence of voice and Internet services that will
give the people of The Bahamas a world leading communications
infrastructure.

Sonus Networks has been
chosen to replace the legacy technology across the entire wireline
network, and will plan and manage the migration and implementation from
core to edge of the new network, using its IP based technology. Sonus
will also deploy equipment from market leading access solutions partner
Calix, to manage and deliver advanced IP services from the central
office to the network edge. BTC is making this investment in the future
of the Bahamian Commonwealth's communications industry to provide a
network that will enable it to maintain a lead over future competitors
and be responsive to subscribers' needs.

"The Bahamas
Telecommunications Company continues to deliver on its promise to
provide leading edge technology to maintain the competitive position of
The Bahamas in the global marketplace. Our customers deserve the
highest quality of voice and Internet services," commented I. Kirk
Griffin, executive vice president at BTC. "By migrating from the
traditional network to an IP-based infrastructure from Sonus Networks,
we are bringing world class communications throughout our region. We
are preparing for the future delivery of next generation network
services, enabling our business and residential communities to remain
globally competitive and connected."

BTC concluded that the fully
integrated IP-based platform from Sonus Networks will bring significant
reduction in the amount of equipment needed to manage the growing
traffic across BTC's network, when compared to their existing legacy
systems. BTC estimates that, by choosing Sonus technology, it will save
over a million dollars a year in energy costs alone, and approximately
another million dollars a year in maintenance and upgrades. The plan
also includes a disaster recovery site located in Miami, to allow BTC
to quickly recover the islands' communications network, should an
unforeseen event such as a hurricane cause outages in Nassau.

"BTC is taking a leap
forward, and investing in the future of communications," commented
Hassan Ahmed, CEO and chairman at Sonus Networks. "BTC is ahead of many
major carriers in its adoption of IP-based telephony. We are proud to
be chosen for this country-wide deployment, and look forward to
continuing our relationship with BTC, enabling it to deliver new
services to both business and home subscribers."

Sonus is migrating the entire
wireline network, which is spread across 16 islands. The Sonus
components that will be implemented include the Sonus Insight Element
Management System (EMS)TM, Sonus PSX TM, Sonus GSX9000 TM media gateway
and Network Border SwitchTM, the Sonus ASX TM Class 5 feature server
and Sonus SGX TM. This advanced IP-based network also includes the
integration of access solutions from Calix, including the Calix C7
Multiservice Access Platform (MSAP); the most widely deployed MSAP in
North America. The network components will be primarily installed in
the islands of Grand Bahamas and New Providence. The other islands will
be served by this centralized equipment over the BTC MPLS network. BTC
will also have equipment located in Miami, to terminate traffic to
local US carriers, as well as function as a disaster recovery site. If
an unforeseen event occurs, the islands' communications network can be
quickly recovered by the back up network components located in Miami.

About Sonus Networks
Sonus Networks, Inc. is a market leader in IP communications
infrastructure 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
Westford, 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 Item 1A "Risk
Factors" of Sonus' Quarterly Report on Form 10-Q for the period ended
March 31, 2008, filed with the SEC, which identifies 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 and
uncertainties associated with the Company's restatement of its
historical stock option granting practices and accounting including
regulatory actions or litigation; risks associated with our
international expansion and growth; consolidation in the
telecommunications industry; and potential costs resulting from pending
securities and patent 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, except as required by law.