Nippon Telegraph and Telephone Corporation operates in the Telephone communications, exc. radio sector. NIPPON TELEGRAPH AND TELEPHONE CORPORATION (NTT) is a Japan-based telecommunications provider. The Company primarily operates in five business segments. The Regional Communications segment is engaged in the provision of domestic intra-prefectural communication services and incidental services. The Long-distance and International Communications segment is engaged in the provision of domestic inter-prefectural and international communication services and incidental services. The Mobile Communications segment is engaged in the provision of mobile phones services, and the related services. The Data Communications segment is engaged in the provision of system integration and network system services, among others. The Others segment is engaged in the real estate business, finance business, construction and power business, system development business, as well as advanced technology development business, among others. In our complete report available for purchase the company is compared to: Verizon Communications, China Mobile Limited and AT&T Inc..