Aricent Joins IMS Forum(R) and Participates in the IMS Plugfest(TM).

Aricent Leverages IMS Expertise for Seamless Interoperability and Accelerated Roll-out of IMS-based Convergence Through Participation in the IMS Plugfest on October 15-19, 2007

PALO ALTO, Calif. -- Aricent, a full-service, full-spectrum communications Software Company, announced today that it has joined the IMS Forum([R]) (www.IMSForum.org), the industry's only forum dedicated to the acceleration of IP Multimedia Subsystem (IMS) application and service interoperability.

The IMS Forum is an industry-wide forum designed to foster the interoperability of IMS applications and services for wireless, wireline and cable broadband networks. Aricent offers software services and products that enable the world's leading communications equipment manufacturers, device manufacturers and service providers to improve time-to-revenue and maximize efficiency.

"The IMS Forum welcomes Aricent," said Michael Khalilian, chairman and president of the IMS Forum. "Aricent is a great addition to the IMS Forum and the IMS Plugfest and we are looking forward to their active participation in the Plugfests and Technical and Marketing Working Groups. Aricent has a world-class team of consultants, designers, developers and testers who are working toward IMS interoperability."

"Aricent is delighted to join the IMS Forum, which is leading the industry in interoperability testing of the IMS service models required for the ubiquitous deployment of the converged services that are becoming ever more popular with consumers," said Ajay Gupta, Vice President of Aricent. "Our company is dedicated to eliminating the high complexity and technology fragmentation impeding the delivery of communications convergence. With our super-suite of IMS software services and products, we are fully committed to helping our clients achieve seamless integration between infrastructure and devices, to deliver innovative voice, video and data applications."

Aricent has a dedicated IMS practice, with more than 800 person years of experience, offering an extensive portfolio of IMS software services and products. The services range from initial strategy and design, through software implementation to system integration and testing for the entire IMS architecture. These services accelerate time-to-revenue for Aricent clients and reduce their risks when deploying IMS-based solutions. With a comprehensive portfolio of IMS software services and products Aricent enables communications equipment manufacturers, device manufacturers and service providers to significantly reduce their time-to-market and mitigate the risks associated with IMS migration and roll-out.

About Aricent

With corporate offices in Palo Alto, California, Aricent is a full-service, full-spectrum communications software company. Aricent offers software services and products that enable the world's leading communications equipment manufacturers, device manufacturers and service providers to improve time-to-revenue and maximize efficiency. Owned by Kohlberg Kravis Roberts & Co., Sequoia Capital and Flextronics International Ltd., Aricent has more than 350 clients worldwide, including Airtel, Alcatel-Lucent, Cisco Systems, Ericsson, Inmarsat, Juniper, Motorola, NEC, Nokia, Samsung, Sony Ericsson, Texas Instruments, Virgin Mobile and Vodafone. For more information, visit www.aricent.com.

About the IMS Forum

The IMS Forum([R]) is a global, non-profit industry association devoted to interoperable IP Multimedia Subsystems services and solutions. IMS Forum's mission is to accelerate the interoperability of IMS and NGN applications and services, enabling enterprise and residential consumers to quickly benefit from the delivery of quadruple play voice, video, internet and mobile services over broadband via cable, wireless and fixed networks. The IMS Forum is the initiator and organizer of the IMS Plugfest[TM], the industry's only event focused on IMS and NGN services interoperability verification and certification.

Through its organized Plugfests, working group interaction, and other activities, forum members are able to develop cost-effective technical frameworks for converged IP services over wireline, cable, 3G, WiFi and WiMAX networks. Plugfest III will be held October 15-19, 2007 by the IMS Forum at the UNH Interoperability Lab. For additional information or to join the IMS Forum and the IMS Plugfests, please visit www.IMSForum.org.