Nippon Telegraph and Telephone Corporation, together with its subsidiaries, provides fixed and mobile voice related services, IP/packet communications services, telecommunications equipment, system integration, and other services in Japan and internationally. It operates through five segments: Regional Communications Business, Long Distance and International Communications Business, Mobile Communications Business, Data Communications Business, and Other Business. The company offers inter-prefectural communications services, services related to the international communications and solutions business, and related services; mobile phone and related services; and network system and system integration services. It also provides IT system building and maintenance support for corporations; professional security, ICT, data center-related, teleconference, Web conference, video conference, Internet connection, video distribution, and smart life area services; and consulting, and system design and development services. In addition, the company engages in the acquisition, development, leasing, and management of real estate properties; lease and installment sales of telecommunications-related devices; billing and collection of charges for communications and other services; and design, management, and maintenance of buildings, equipment, and electric power facilities. Further, it is involved in the development, production, operation, and maintenance of information communications systems and software; and technology transfer and consulting activities, as well as provision of credit card transaction settlement services. Additionally, the company operates office, retail, and residential properties under the Wellith brand; hotels and resorts; and shared-office properties that include daycare facilities and office spaces. As of March 31, 2018, it had 19,869 thousand fixed line subscriptions. The company was founded in 1952 and is headquartered in Tokyo, Japan.
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