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Nippon Telegraph and Telephone West corp.operates "Regional telecommunications services" in the west areas of Japan*1,"Incidental business activities","Business activities to achieve the purpose of the company","Business activities to utilize the company's resources" under the Nippon Telegraph and Telephone Corporation Law.
|Telecommunications business*2||Voice transmission services||Subscriber telephone, Receive-only telephone, Emergency call telephone, Public telephone, Virtual branch office telephone*3, Intercommunication telephone, Connection service for wire broadcasting telephone, ISDN service, Off-Talk Service, IP telephony service|
|Data transmission services||Signal monitoring communication service, LAN type communication network service, IP communication network service, Data transmission service|
|Leased Circuit Services||General leased circuit service , High-Speed leased circuit service, ATM leased circuit service, IP routing network connection leased circuit service, DSL connection leased circuit service, Wireless leased circuit service|
|Telegram service||Telegram service|
|Incidental business/ Business activities to achieve the purpose of the company||Sales of telecommunications equipment, Information fee collection service, Billing and collection service, Telecommunication consulting service, Training/Seminar etc.|