Sonus and F5 Networks Combine Market Leading Session Border Controller and Diameter Solutions to Address the Emerging LTE

  Sonus and F5 Networks Combine Market Leading Session Border Controller and
  Diameter Solutions to Address the Emerging LTE Market

 Integration of Session Border Controllers and Diameter Signaling Technology
Provides the Security and Quality-of-Service Required by Operators to Deliver
                   LTE Roaming and Voice over LTE Services

Key Takeaways:

  *Sonus and F5 Networks partner to deliver integrated solutions based on
    best-of-breed SIP and Diameter signaling management solutions
  *The partnership addresses needs of the growing numbers of operators who
    are deploying LTE and IMS networks and IPX carriers offering roaming
    across them
  *The solution, available now through Sonus, enables Service Providers to
    combine the Sonus 5000 series of Session Border Controllers (SBCs) with
    the F5^® Traffix™ Signaling Delivery Controller™ (SDC™) to combine session
    and Diameter signaling control capabilities, allowing mobile operators to
    rapidly provide services and service entitlements to users as they roam
    across LTE and 3G networks
  *The joint Sonus/F5 solution simplifies Service Providers’ ability to
    deliver and monetize mobile Unified Communication (UC) and multi-media
    services accessed with smart mobile devices

Business Wire

WESTFORD, Mass. -- July 25, 2013

Sonus Networks, Inc. (NASDAQ: SONS), a global leader in SIP communications,
today announced it has partnered with F5 Networks  (NASDAQ: FFIV), the
industry’s leader in Diameter signaling technology, to deliver integrated
solutions designed to simplify the way Service Providers deliver
differentiated mobile UC and multi-media experiences across blended network
environments.

Operators are constructing 4G networks based on LTE and IMS technologies in
support of the growing number of smartphones and devices that require ‘always
on’ accessibility to mobile broadband and applications. The combination of
capabilities from the Sonus SIP-based Session Border Controller (SBC) and the
Diameter-based F5^® Traffix™ Signaling Delivery Controller™ (SDC™) enables the
delivery of these services in a scalable, billable, secure manner across
networks. Service delivery and metering can now transcend network and operator
boundaries, and go across network types such as LTE-to-3G. Additionally,
operators are able to retain their existing 3G assets, while adding LTE and
IMS elements to offer faster and better quality mobile broadband services.

The joint solution will enable growth for Service Providers through the
deployment and maintenance of high performance LTE networks and while
providing the seamless roaming required in the use of broadband mobile
networks and smart devices:

  *“Smartphone shipments are expected to grow 32.7% year over year in 2013
    reaching 958.8 million units, up from 722.5 million units last year.”
    (Source: IDC press release, June 4, 2013)
  *72% of enterprises support tablets for business use “driven by the
    ubiquitous access and increased speeds of 3G and long-term evolution
    (LTE)/4G.” (Source: Nemertes Research Benchmark, The Business Case for
    Tablets, December 2012)
  *LTE revenue was $2.7 billion in 1Q’13, an increase of 21%
    quarter-over-quarter and 108% year-over-year according to Infonetics
    Research. (Source: 2G, 3G, 4G Mobile Infrastructure & Subscribers Market
    Share & Forecasts, Infonetics, June 2013)
  *In line with the deployment of mobile services such as VoLTE, Infonetics
    Research found that the top driver of growth in use of Service Providers
    SBCs is to locate them at the access edge of mobile networks. (Source: SBC
    Deployment Strategies: Global Service Provider Survey, Infonetics, October
    2012)

Quotes:

“When combining the advanced, robust solutions of F5 Networks and Sonus,
operators can remain confident in delivering LTE roaming and VoLTE services
that will satisfy customers and generate revenue,” said Mallik Tatipamula,
vice president of Service Provider Solutions, F5. “We view addressing the
requirements to deliver these services as a natural blend of our two product
areas. Looking forward we envision other innovative joint scenarios, such as
supporting operators to benefit from offering premium OTT services with our
SDC gateway to enable real-time billing and charging. Through our partnership
with Sonus, customers will benefit from working with the experts in SBCs and
Diameter signaling control.”

“The industry is becoming increasingly mobile and, behind the scenes, much is
being accomplished to keep up with the demands of enterprises and consumers,”
said Todd A. Abbott, executive vice president, Strategy & Go to Market, Sonus.
“As a result of Sonus’ close collaboration with F5, the integration of our
products will empower operators of 4G/LTE networks to scale their delivery of
enhanced services required by always-connected users and to track service
usage, independent of end user location or the network to which they are
connected.”

“While it is early days for LTE and IMS, we are seeing strong positive growth
and expect the trend to continue,” stated Diane Myers, principal analyst,
VoIP, UC, and IMS, Infonetics Research. “The increased use of mobile broadband
networks is driving the growth of Diameter signaling within and between
operators.”

“The integration of F5’s Diameter-based products with the Sonus SBC portfolio
is logical, as they perform complementary functions to enable flexible service
delivery across multiple types of networks,” said Zeus Kerravala, founder and
principal analyst of ZK Research. “And with complementary go to market models,
I foresee a win for Sonus and F5 as they deliver simpler provisioning and
reduced OpEx for their customers building out and interfacing to LTE
networks.”

Other Facts:

  *Sonus recently announced strategic alliances with Juniper Networks and
    BroadSoft Inc. to address the needs of providers of next generation
    services
  *Sonus is the fastest growing brand of session border controllers, growing
    five times faster than the industry average of SBC service provider
    vendors (source: Infonetics Research)
  *Sonus is positioned in the Leaders quadrant of the Magic Quadrant for
    Session Border Controllers, published October 9, 2012 by Gartner, Inc.
  *Sonus has the broadest portfolio of Microsoft Lync qualified SBCs and
    Sonus solutions have been performance verified by Miercom Labs

Additional Resources:

  *Sonus published the third edition of Session Border Controllers For
    Dummies reference book in partnership with John Wiley & Sons, Inc.
    Download a free copy here
  *Download the Webtorials report, "Mobile Unified Communications, The
    Emergence of 4D Convergence"
  *Refer to the report “Diameter Signaling Control Annual Worldwide and
    Regional Market Size and Forecasts ” by Diane Myers, principle analyst,
    Infonetics Research
  *Download the CIO Playbook, 3 Keys to Leveraging SIP for Productivity and
    Profitability Gains

Tags:

Sonus, SONS, Session Border Controller, SBC, SBC 5000, SBC 5110, SBC 5210,
SIP, SIP trunking, IP, IPsec, media transcoding, Enterprise SBC, Unified
Communications, UC, Cloud, cloud-based services, VoIP communications,
enterprise communications, Session Initiation Protocol, SIP-based solutions,
VoIP, service provider, F5, F5 Networks, Diameter, mobile services, service
creation, multi-media, LTE, roaming, signaling, IMS, 3G

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.

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.

F5, Traffix, Signaling Delivery Controller, and SDC are trademarks or service
marks of F5 Networks, Inc., in the U.S. and other countries. All other product
and company names herein may be trademarks of their respective owners. The use
of the words “partner,” “partnership,” or “joint” does not imply a legal
partnership relationship between F5 Networks and any other company.

Contact:

Sonus Networks
Wendy Tullo, +1-972-301-4978
wtullo@sonusnet.com
or
Lois Paul & Partners
Anastasia Efstratios, 617-986-5873
anastasia_efstratios@lpp.com