1953 |
Mar. |
KDD |
Kokusai Denshin Denwa Co., Ltd. (KDD) is founded. |
1961 |
Oct. |
KDD |
KDD is listed in the Second Section of the Stock Exchange (Tokyo, Osaka, Nagoya). |
1964 |
Jun. |
KDD |
No. 1 Trans-Pacific Cable (TPC-1) enters service. |
Aug. |
KDD |
KDD joins INTELSAT (International Telecommunications Satellite Organization). |
1966 |
Dec. |
KDD |
Ibaraki Earth Station in Takahagi Ibaraki Prefecture enters service, and TV transmission between Japan and the U.S.A. begins. |
1969 |
May |
KDD |
Yamaguchi Earth Station in Yamaguchi Prefecture enters service, launching a satellite circuit between Japan and Europe. |
1970 |
Feb. |
KDD |
KDD is listed in the First Section of the Stock Exchange (Tokyo, Osaka, Nagoya). |
1973 |
Mar. |
KDD |
International Direct Dialing (IDD) service is launched. |
1974 |
Jul. |
KDD |
Construction of the KDD Building in Shinjuku, Tokyo is completed. |
1976 |
Jan. |
KDD |
No. 2 Trans-Pacific Cable (TPC-2) enters service. |
1977 |
Mar. |
KDD |
KDD joins INMARSAT (International Maritime Satellite Organization). |
1984 |
Jun. |
DDI |
Daini-Denden Planning Company is established. |
Nov. |
KDD |
Teleway Japan Corporation (TWJ) is founded. |
1985 |
Apr. |
DDI |
DDI CORPORATION (DDI) launches operations. |
Jun. |
DDI |
DDI is approved as a Type I Telecommunications business, and receives a provisional wireless license. |
Aug. |
KDD |
Oyama International Network Operations Center launches operations. |
Dec. |
DDI |
DDI is assigned <0077> as its domestic long-distance service access number. |
1986 |
Oct. |
DDI |
Tokaido Route (Tokyo-Nagoya-Osaka) leased circuit service begins. |
1987 |
Mar. |
IDO |
NIPPON IDOU TSUSHIN CORPORATION is established. |
Sep. |
DDI |
Domestic long-distance service along the Tokaido Route (Tokyo-Nagoya-Osaka) begins. |
1988 |
Feb. |
IDO |
IDO receives approval to operate as a Type I Telecommunications business. |
Dec. |
IDO |
IDO launches car telephone service using the Hi-Cap analog cellular system. |
1989 |
Apr. |
KDD |
No. 3 Trans-Pacific Cable (TPC-3) enters service. |
May |
IDO |
Handy Phone Service (a compact lightweight cellular phone) is launched. |
1990 |
Sep. |
IDO |
Handy Phone Minimo Service (at that time, the world's lightest cellular phone) is launched. |
1991 |
Oct. |
IDO |
TACS-based Service is launched. |
1992 |
Dec. |
DDI/IDO |
TACS-based nationwide roaming and interconnection is introduced. |
1993 |
Sep. |
DDI |
DDI is listed in the Second Section of the Tokyo Stock Exchange. |
1994 |
Jun. |
IDO |
Personal Digital Cellular (PDC) service is launched. |
1995 |
Sep. |
DDI |
DDI is listed in the First Section of the Tokyo Stock Exchange. |
1997 |
Jun. |
KDD |
KDD law is amended. |
Jul. |
DDI |
DION Service is launched. |
KDD |
Domestic telecommunications service is launched. |
1998 |
Jul. |
KDD |
KDD law is abolished. |
DDI |
DDI acquires approval to operate as an International Type I Telecommunications business. |
Oct. |
DDI |
International telephone service is launched. |
Dec. |
KDD |
Kokusai Denshin Denwa Co., Ltd. (KDD) and Teleway Corp. merge to create KDD Corporation. |
1999 |
Apr. |
DDI/IDO |
cdmaOne nationwide seamless network is completed. |
DDI/IDO |
Mobile Internet Connection Service EZweb is launched. |
2000 |
Jan. |
DDI/IDO |
PacketOne, a packet communications service with a maximum rate of 64kbps, is launched. |
Apr. |
DDI/IDO |
GLOBAL PASSPORT, an international roaming service, is launched. |
Jun. |
DDI/IDO |
DDI and IDO is granted a revision to their business license to accommodate IMT-2000 service provision. |
Jul. |
DDI/IDO |
"au", a uniform nationwide mobile communications brand, is launched. |
Oct. |
DDI CORPORATION, KDD Corporation and IDO CORPORATION merge and form a new company. The trade name of the new entity is DDI CORPORATION, and it operates under the new KDDI corporate brand. |
Nov. |
au CORPORATION is launched. |
2001 |
Apr. |
Corporate name is changed to KDDI CORPORATION. |
Oct. |
au CORPORATION is merged with KDDI CORPORATION. |
Nov. |
The nationwide cumulative total number of cdmaOne subscribers reaches 10 million. |
Dec. |
"cdmaOne" next-generation service is launched. |
2002 |
Apr. |
Third-generation (3G) mobile phone service (CDMA2000 1x) is launched. |
2003 |
May |
All office in the TOKYO area are consolidated in the "Garden Air Tower" in Iidabashi. |
Oct. |
KDDI Hikari Plus, a suite of optical fiber-based services, is launched. |
Nov. |
CDMA 1X WIN, an enhanced 3G mobile phone service based on CDMA2000 1xEV-DO technology, is launched. |
2005 |
Feb. |
The high-quality IP telephone service "KDDI Metal Plus" is launched. |
Jun. |
The total number of au mobile phone subscribers in Japan reaches 20 million. |
Oct. |
TU-KA Cellular Tokyo Inc., TU-KA Cellular Tokai Inc., and TU-KA Phone Kansai Inc. are merged. |
2006 |
Jan. |
POWEREDCOM, Inc. is merged with KDDI CORPORATION. |
