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NEC's IMS Platform Contributes to Realization of NTT DoCoMo's New PushTalk Service
-Deployment of NEC's IMS Platform a major step toward an All-IP Mobile Network-

***** For immediate use December 22, 2005

Tokyo, December 22nd, 2005--- NEC Corporation announced today that its IMS (IP Multimedia Subsystem) platform has been utilized to implement NTT DoCoMo's PushTalk service which was successfully launched in November of this year.

The IMS platform is currently drawing attention within the telecommunications industry as it utilizes a common signaling protocol, SIP (Session Initiation Protocol), to setup voice and data services. These services can be easily combined to create many new services.
NEC's IMS is open to any access medium from W-CDMA to WiFi. IMS benefits the operator as this access flexibility bridges the IP application and traditional mobile communications environments. This in turn enables the rapid and cost effective creation of IP based services for a wide variety of fixed and mobile subscribers.

It is predicted that the telecommunications industry will see a greater number of advanced services in the foreseeable future. It is also expected that services such as those that allow groups of users, fixed or mobile, to communicate or quickly download/exchange large amounts of data will proliferate. Operators are looking to the IMS platform to support the growth of these kinds of advanced services with the necessary flexibility and capacity. At the same time, operators are looking to balance their investment in IMS against reduced costs for service creation and operation.

Mr. Takanori Utano, Member of the Board and Executive Vice President, Chief Technical Officer of NTT DoCoMo, Inc., explained, "We used NEC's advanced& highly reliable IMS platform to build our PushTalk services and we are working to leverage this platform to build more functions & services in the future."

NEC's IMS product line-up is built on standards-based architecture and protocols (3GPP and 3GPP2) to deliver new multimedia services. NEC is currently actively promoting IMS in the global market place as the core solution of their vision for achieving converged ubiquitous networking for users.

NEC's IMS platform strategy is based on the building and strengthening of following key points.

- 3GPP/3GPP2 compliance
- Support for the NGN standards of ITU/TISPAN in order to support converged fixed and mobile services
- Range of rich applications and application infrastructure
- Seamless connectivity with other service networks such as W-LAN
- Support for both IPv4 and IPv6 addressing
- Highest grade performance and reliability ensured by NEC's middleware
- Support for a number of platforms including Advanced TCA(TM) (ATCA).

IMS: IP Multimedia Subsystem
NGN: Next Generation Network

<About NEC Corporation >
NEC Corporation (NASDAQ: NIPNY) (FTSE: 6701q.l) is one of the world's leading providers of Internet, broadband network and enterprise business solutions dedicated to meeting the specialized needs of its diverse and global base of customers. Ranked as one of the world's top patent-producing companies, NEC delivers tailored solutions in the key fields of computer, networking and electron devices, by integrating its technical strengths in IT and Networks, and by providing advanced semiconductor solutions through NEC Electronics Corporation. The NEC Group employs more than 140,000 people worldwide and had net sales of 4,855 billion yen (approx. $45.4 billion) in the fiscal year ended March 2005.
For additional information, please visit the NEC home page at:
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PushTalk is a trademark of NTT DoCoMo,Inc. in Japan.
NTT DoCoMo's PushTalk service is only available to subscribers in Japan.

Media Contact:

Akiko Shikimori, NEC Corporation
Tel:+81 (3) 3798 6511

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