Nippon Telegraph & Telephone engages in telecommunication services. Founded in 1952 and headquartered in Tokyo, Japan, its businesses include: Regional Communications, offering domestic communication services such as fixed voice-related, internet protocol, and packet communications services and selling telecommunications equipment; Long Distance and International Communications, dealing with the domestic and international communications and system integration services; Mobile Communications, providing mobile voice-related, IP, and packet communications services and selling telecommunications equipment; Data Communications, covering system integration and network system services; and Other Businesses, including real estate, finance, engineering, system integration and data processing, and technology and shared operations development.