Nippon Telegraph and Telephone Corp (NTT)

Nippon Telegraph and Telephone Corporation was incorporated as a limited liability, joint-stock company under the NTT Law on April 1, 1985. The Company is provider of telecommunications services, offering fixed and mobile voice related services, IP/packet communications services, and system integration services in Japan. Its telephone network is one of the world's largest networks. Telecommunications services provided by it are divided into six categories: fixed voice related services, mobile voice related services, IP/packet communications services, sales of telecommunications equipment, system integration, and other services. The Company's is Japan's largest provider of telephone subscriber and ISDN (INS-Net 64 and INS-Net 1500) services in Japan. INS-Net 64 uses existing dry copper lines to transmit digital signals, providing efficient, high-quality communications services with capacity equivalent to two circuits. INS-Net 1500 uses optical fiber, offering 24 channels, and is suited for corporate customers who need multiple lines. Customers might also utilize it as a high-speed data link by bundling several of the 24 channels together. Mobile voice related services are provided by NTT DOCOMO and they include certain services in the mobile communications business segment such as mobile phone services and PHS (partially recorded in IP/packet communications services). NTT DOCOMO is Japan's operator of mobile communications services, and is one of the world's largest mobile phone service operators. IP/packet communications services included in the regional communications business segment include 'FLET'S ISDN,' which runs on ISDN lines, 'FLET'S ADSL,' which uses ADSL technology, 'FLET'S Hikari,' based on optical fiber communications, and other fixed rate Internet access services, as well as high value-added services that run on FLET'S networks (leased circuit prefectural IP relay networks built by NTT East and NTT West which connect access services such as FLET'S Hikari and FLET'S ADSL to the Internet and other networks). It faces competition in virtually all aspects of its business, including the regional communications business, long distance and international communications business, mobile communications business and data communications business segments. The MIC is the main regulatory body in Japan responsible for the telecommunications service industry. NTT East, NTT West, NTT Communications and NTT DOCOMO are regulated by the MIC under the Telecommunications Business Law in respect of their respective business activities. NTT, NTT East and NTT West are also subject to regulation under the NTT Law.