All-Motorola cdmaOne Digital Network Goes Commercial in Japan.

ARLINGTON HEIGHTS, Ill.--(BUSINESS WIRE)--April 14, 1999--

National network provides state-of-the-art

service to world's fastest-growing cellular market

The massive, nationwide buildout in Japan of a CDMA (Code Division Multiple Access) digital cellular communications network was completed today with the scheduled commercial launch of state-of-the-art cellular infrastructure designed, manufactured and installed by Motorola, Inc.'s Network Solutions Sector (NSS). The Motorola NSS CDMA network also is known as cdmaOne(TM).

The all-Motorola digital network, owned and operated by DDI Corporation (DDI) and IDO Corporation (IDO), offers 95 percent coverage nationally to Japan's 126 million people.

"We now have the wireless technology and the ability to move Japan forward in what we believe is the world's most competitive marketplace," said IDO Executive Vice President Akimasa Egawa. "Motorola shares our collective desire to ensure that the customer is positioned as the ultimate beneficiary of this mammoth technological accomplishment," Egawa said.

"This is a significant day for all of us and for the digital cellular industry," said DDI Executive Vice President Tadashi Onodera. "Our work with IDO and Motorola has been one of the most satisfying collaborations ever."

Last July, three DDI networks were commercialized, offering the first commercial cdmaOne service to people in cities such as Osaka, Kobe, Kyoto, Fukuoka and Naha, plus more than 600 other communities. Last month more new service was launched in the Shikoku, Hokuriku and Chugoku regions, where more than 15 million people live. Today's launch of two systems by IDO and DDI's remaining regional networks marks the completion of the world's most ambitious and comprehensive cdmaOne installation project. The IDO service areas encompass the heavily populated southeast area of Japan including the cities of Tokyo, Yokohama, and Nagoya. The host of the 1998 winter Olympic games, Nagano, is also starting service. The DDI regions launching today include the cities of Sapporo and Sendai.

"What is unique about this entire project is the shared vision of two major wireless providers and their willingness to work together with us in developing a total communications solution for an entire nation," said Ron Hamma, vice president and general manager of NSS operations in Japan. "All of us at Motorola are grateful for the trust DDI and IDO have placed in us and in our ability to deliver a technologically superior wireless solution," Hamma added.

The DDI/IDO nationwide network is comprised of Motorola NSS's SC(TM) family of base stations and EMX(R) 5000 mobile switches. The EMX 5000 was developed jointly by Motorola NSS and Alcatel USA, which manufactures the switch and provides core platform software. Motorola NSS develops the mobility applications software.

Six-sector technology, which nearly doubles a cell's capacity, plus state-of-the-art 8 Kbps Enhanced Variable Rate Coders (EVRC), digital voice encoders that provide landline quality voice transmission and significant capacity gains, are incorporated throughout each network system.

DDI is the second largest total telecom carrier in Japan. Established in June of 1984, DDI operates eight regional cellular companies that provide both analog TACS and Personal Digital Communications (PDC) cellular service.

IDO was established in March of 1987 to offer mobile phone communication services. IDO's service areas reach out from the heart of Tokyo and cover much of the central region of Honshu, the principal island of Japan and the nation's most densely populated area. Motorola NSS deployed its first cellular system, an analog TACS network, in 1989 in Japan for DDI's Kansai Cellular Telephone Co. in the Osaka region. The other seven DDI regions and IDO followed later to provide nationwide coverage. In 1991, Motorola NSS introduced NTACS (Narrowband TACS) into Japan when DDI began NTACS service in Osaka and IDO later launched NTACS service in Tokyo and Nagoya.

In 1993, Motorola NSS began deploying PDC systems for the service provider Tu-Ka at 1.5 GHz in the Tokyo and Tokai regions and at 800 MHz with DDI's cellular telephone companies. MOTOROLA NSS completed the nationwide buildout of PDC in late 1996.

Motorola, Inc. has been operating in Japan since opening its first office in 1962 in Tokyo. Motorola NSS maintains sales, service and engineering support facilities in Japan, as well as a 3G research and development center.

Motorola is a global leader in providing integrated communications solutions and embedded electronic solutions. Sales in 1998 were $29.4 billion.

For more information, please visit the Motorola web site at http://www.motorola.com/.