Nippon Telegraph and Telephone Corporation (TSE: 9432; NYSE: NTT) was established in 1952 as a state-owned telecommunications public corporation and in 1986 converted to a private company to be the largest telecommunications company in Japan and the second largest in the world. NTT and its 430 group companies provide a wide range of telecommunications services. One of the important missions of NTT group is to contribute to the achievement of a Ubiquitous Broadband society. For more information, please visit http://www.ntt.co.jp/index_e.html 

Fujitsu, NTT and NEC Launch Joint R&D for World's Top-Level, 400Gbps-class Optical Transmissions Technology (Dec 11, 2012)