KDDI in Japan Deploys Starent Networks' Security Gateway to Provide Secure Wi-Fi Access over Fixed Broadband Networks

Leading Japanese Operator Expands Service Offerings While Maximizing Subscriber
Experience
TOKYO & TEWKSBURY, Mass.--(Business Wire)--
Starent Networks, Corp. (NASDAQ:STAR), a leading provider of infrastructure
solutions that enable mobile operators to deliver multimedia services, today
announced KDDI, one of the largest Japanese operators, is deploying its Security
Gateway to provide Wi-Fi service for their growing subscriber base. KDDI`s
`Wi-Fi WIN` service provides secure and easy Internet access for cellular
handsets, via wireless LAN and fixed broadband lines.

Starent`s Security Gateway provides KDDI with a secure entry point into their
core network. This function leverages the high-performance and distributed
architecture capabilities of Starent Networks` market leading ST40 multimedia
core platform. Additionally, with Starent`s Home Agent (HA) in the network, KDDI
subscribers can benefit from service experiences as they roam between un-secure
Wi-Fi networks and secure EV-DO networks.

"Having worked with KDDI for the past five years, we have seen first hand their
commitment to customers and to innovation by providing advanced and diverse
services offerings," said Ashraf Dahod, president and chief executive officer
for Starent Networks. "Our multimedia core solutions are designed specifically
for mobile broadband and as a result, are well suited for high-demand networks
like KDDI`s."

About Starent Networks

Starent Networks, Corp. is a leading provider of infrastructure solutions that
enable mobile operators to deliver multimedia services to their subscribers.
Starent Networks has created solutions that provide mobile operators with the
functions and services needed for access, mobility management and call control
in their networks. Through integrated intelligence and high performance
capabilities, Starent Networks` solutions also enhance subscriber management,
billing and session policy enforcement. The company`s products are capable of
supporting a wide range of mobile wireless networks, such as CDMA2000,
UMTS/HSPA, LTE, WiFi, and WiMAX. Starent Networks` products have been deployed
by over 95 mobile operators in over 40 countries. Additional information about
Starent Networks is available at www.starentnetworks.com.

Starent Networks` Safe Harbor Statement

Any statements in this press release about future expectations, plans and
prospects for Starent Networks, including statements about expectations related
to the company's multimedia core platform solutions and in-line services,
constitute forward-looking statements within the meaning of The Private
Securities Litigation Reform Act of 1995. These statements contain the words
"believes," "anticipates," "plans," "expects," "will" and similar expressions.
Actual results may differ materially from those indicated by such
forward-looking statements as a result of various important factors, including
the inability to predict the future success or market acceptance of Starent
Networks` multimedia core platform solutions, the highly competitive and rapidly
evolving market in which Starent Networks` competes, Starent Networks` limited
operating history, the fluctuation of its past operating results, its reliance
on a limited number of customers for a significant portion of its revenues and
its reliance on a single line of products and other factors discussed in the
"Risk Factors" section of Starent Networks` Annual Report on Form 10-K for the
year ended December 31, 2008, and other documents we periodically file with the
Securities and Exchange Commission. In addition, the forward-looking statements
included in this press release represent Starent Networks` views as of the date
of this press release. Starent Networks anticipates that subsequent events and
developments will cause its views to change. However, while Starent Networks may
elect to update these forward-looking statements at some point in the future, it
specifically disclaims any obligation to do so. These forward-looking statements
should not be relied upon as representing Starent Networks` views as of any date
subsequent to the date of this press release.

Starent, ST40, and the Starent Networks logo are either registered trademarks or
trademarks of Starent Networks, Corp. in the United States and/or other
countries.The names of other companies and products mentioned in this release
may be the trademarks of their respective owners

Starent Networks, Corp.
Jennifer Buchhalter, 978-863-3749
jbuchhalter@starentnetworks.com

Copyright Business Wire 2009