Iusacell has taken a technology leadership role as the first 3G operator in Mexico. With the deployment of a broadband network, Iusacell continues to improve its 3G network through a next generation solution. The ST16 delivers powerful throughput, call transaction rates and packet processing, along with significant subscriber and network intelligence. For the Iusacell deployment, Starent Networks will provide the Packet Data Serving Node (PDSN) and Home Agent (HA) network elements along with geographic redundancy, Intelligent Traffic Control and Enhanced Lawful Intercept.

Iusacell chose Starent Networks’ ST16 platform to enhance its network capabilities to deliver multimedia services, as well as help provide a robust roaming environment as subscribers travel throughout Mexico or come from abroad.

“Because of its experience and focus on the wireless space, Starent Networks understands our requirements on a detailed level and has provided us with the capabilities we demand,” said Nestor Bergero, CTO of Iusacell.

“Latin America is a large growth area for mobile services and is an important region for mobile communications and for Starent Networks,” said Ashraf Dahod, CEO of Starent Networks. “We are pleased to be working with Iusacell – Mexico’s first 3G operator – as the company expands and continues to capture market share in this burgeoning area.”

About Iusacell

Grupo Iusacell, S.A.B. de C.V. (BMV:CEL) is a wireless cellular and PCS service provider in Mexico with a national footprint. Iusacell offers more and better voice communication and data services through state-of-the-art technology, such as its new 3G network, throughout all of the regions in which it operates. In addition to its core mobile telephony services, Iusacell also provides a wide range of other telecommunications services, including long distance, wireless local telephony and data transmission services. Grupo Iusacell is a company of Grupo Salinas’s company (www.gruposalinas.com). For additional information please visit: www.iusacell.com

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 network functions and services, including access from a wide range of radio networks to the operator’s packet core network. Starent Networks’ solutions also provide management of subscriber sessions moving between networks and application of billing and other session policies. Starent Networks’ products and services provide high performance and system intelligence by combining significant computing power, memory and traffic handling capabilities with a flexible, high availability operating system and other proprietary software. The company’s products integrate multiple network functions and services needed for the delivery of advanced multimedia services, such as video, Internet access, voice-over-IP, e-mail, mobile TV, photo sharing and gaming. Starent Networks’ products have been deployed by over 60 mobile operators in 25 countries.

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 solutions 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, 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 Starent Networks’ Registration Statement on Form S-1, which is filed with the Securities and Exchange Commission, as amended, including the "Risk Factors" section in the final Prospectus, dated October 31, 2007, relating to Starent Networks’ public offering and in Starent Networks’ most recent Quarterly Report on Form 10-Q filed 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