The nation of Japan currently possesses one of the most advanced communication networks in the world. For example, by 2008 the Japanese government's Internal Affairs and Communications Ministry stated that about 75 million people used mobile phones to access the Internet, said total accounting for about 82% of individual Internet users.
Kōshin'etsu (甲信越) is a subregion of the Chūbu region in Japan consisting of Yamanashi, Nagano, and Niigata prefectures.
NTT Docomo, Inc., also known as Docomo, is a Japanese mobile phone operator owned by the Nippon Telegraph and Telephone (NTT). The name is officially an abbreviation of the phrase, "do communications over the mobile network", and is also from a compound word dokomo, meaning "everywhere" in Japanese. The company is headquartered in Sanno Park Tower, Nagatachō, Chiyoda, Tokyo. Docomo provides phone, video phone, i-mode (internet), and mail services. It is the largest wireless carrier in Japan, with 82.632 million subscribers as of March 2021.
NEC Corporation is a Japanese multinational information technology and electronics corporation, headquartered at the NEC Supertower in Minato, Tokyo, Japan. It provides IT and network solutions, including cloud computing, artificial intelligence (AI), Internet of Things (IoT) platform, and telecommunications equipment and software to business enterprises, communications services providers and to government agencies, and has also been the biggest PC vendor in Japan since the 1980s when it launched the PC-8000 series.
KDDI Corporation is a Japanese telecommunications operator. It was established in 2000 through the merger of DDI, KDD (ケイディディ), and IDO. In 2001, it merged with a subsidiary named Au, which was formed through the merger of seven automotive and mobile phone companies from the DDI-Cellular Group. As of 2020, it is the second-largest mobile telecommunications provider in Japan in terms of the number of contracts, following NTT Docomo.
Oki Electric Industry Co., Ltd., commonly referred to as OKI, OKI Electric or the OKI Group, is a Japanese information and communications technology company, headquartered in Toranomon, Minato-ku, Tokyo and operating in over 120 countries around the world.
PLDT, Inc., formerly known as the Philippine Long Distance Telephone Company, is a Philippine telecommunications, internet and digital service company.
NTT Communications Corporation is a Japanese telecommunications company owned by Nippon Telegraph and Telephone Corporation. It operates an international network across over 190 countries and regions, with locations in more than 70 countries and regions. The company has approximately 5,500 employees as of March 2020. Its headquarters are located in the Otemachi Place West tower, Otemachi, Chiyoda, Tokyo.
Docomo Pacific is a wholly owned subsidiary of Japanese mobile phone operator NTT Docomo headquartered in Tamuning, Guam. It is the largest provider of mobile, television, internet and telephone services to the United States territories of Guam and the Northern Mariana Islands.
Iwatsu Electric, Co., Ltd. TYO: 6704 is a Japanese electronics manufacturer founded 14 August 1938.
Dimension Data is a company specialising in information technology services. Based in Johannesburg, South Africa, the company maintains operations on every inhabited continent. Dimension Data focuses on services including IT consulting, technical and support services, and managed services. The company is the official technology partner of the Tour de France, the Vuelta a España and also sponsored a team of the same name. In 2010, the company was fully acquired by Nippon Telegraph and Telephone (NTT). On 1 July 2019, all Dimension Data operations, excluding those in the Middle East and Africa, became part of NTT Ltd.
The Bell System was a system of telecommunication companies, led by the Bell Telephone Company and later by the American Telephone and Telegraph Company (AT&T), that dominated the telephone services industry in North America for over 100 years from its creation in 1877 until its antitrust breakup in 1983. The system of companies was often colloquially called Ma Bell, as it held a vertical monopoly over telecommunication products and services in most areas of the United States and Canada. At the time of the breakup of the Bell System in the early 1980s, it had assets of $150 billion and employed over one million people.
NTT DATA Corporation is a Japanese multinational information technology (IT) service and consulting company headquartered in Tokyo, Japan. It is a partially-owned subsidiary of Nippon Telegraph and Telephone (NTT).
The Japanese mobile phone industry is one of the most advanced in the world. As of March, 2022 there were 199.99 million mobile contracts in Japan according to the Ministry of Internal Affairs and Communications. This is 158 percent of Japan's total population.
NTT Docomo USA is a subsidiary of NTT Docomo which operates in the United States.
Yoshihisa Okumura was a Japanese engineer, known for development of cellular telephone networks. His radio survey of signal strength as a function of distance as measured in drive tests in automobiles was critical to the system planning of mobile radio telephone systems.
HKT Limited, also known as Hong Kong Telecom, is one of the largest telecommunications companies in Hong Kong. It has a dominant position in fixed-line, mobile, IDD and broadband services in Hong Kong. HKT Group is a subsidiary of PCCW since 2000, after it was acquired from Cable & Wireless plc.
Seizo Onoe, a Japanese telecommunication executive, is the Director of the Telecommunication Standardization Bureau of the International Telecommunication Union, the Secretariat of ITU-T. Onoe was elected to the post of Director of the TSB for the term 2023-2026 at the ITU Plenipotentiary Conference 2022 (PP-22).
¥11.94 trillion (2021) [1] 
¥8.20 trillion (2021) [1] 
