Nippon Telegraph and Telephone (NTT) is a Japanese telecommunications company established in 1953 as a public corporation, privatized in 1985, and has since evolved into a global ICT leader through innovations like mobile communications, fiber optics, and data centers.
Nippon Telegraph and Telephone Public Corporation is founded to operate Japan's domestic telecommunications under government ownership. #telecom #history
NTT introduces the crossbar switching system, improving call reliability and capacity in Japan's telephone network. #technology #telecom
NTT completes a microwave relay system connecting Tokyo and Osaka, supporting the 1964 Tokyo Olympics communications. #infrastructure #telecom
NTT deploys the D10 electronic switching system, the first in Japan, enhancing digital switching capabilities. #innovation #telecom
NTT announces the Information Network System project, aiming to integrate digital networks for voice, data, and video. #technology #future
Nippon Telegraph and Telephone Public Corporation is privatized and becomes NTT Corporation, with the government retaining a stake. #business #privatization
NTT shares begin trading on the Tokyo Stock Exchange, one of the largest IPOs in history at the time. #finance #stockmarket
NTT launches Japan's first ISDN service, INS-Net 64, offering digital communication for voice and data. #telecom #broadband
NTT Mobile Communications Network (NTT DoCoMo) is spun off to handle mobile operations, becoming Japan's leading mobile carrier. #mobile #subsidiary
NTT introduces PHS service, a low-cost cordless phone system mainly in Japan. #telecom #wireless
NTT DoCoMo starts digital cellular service (Mova), improving voice quality and capacity. #mobile #technology
NTT begins trialing FTTH services, providing ultra-high-speed internet directly to homes. #broadband #innovation
NTT DoCoMo launches i-mode, the world's first mobile internet platform, revolutionizing mobile data services. #mobile #internet
NTT restructures into a holding company, Nippon Telegraph and Telephone Corporation (NTT), with three operating companies: NTT East, NTT West, and NTT Communications. #corporate #reorganization
NTT DoCoMo launches FOMA, the world's first commercial 3G network based on W-CDMA technology. #mobile #3G
NTT Communications is established as a subsidiary focusing on global and enterprise ICT services. #global #telecom
NTT East and NTT West launch FLET'S ADSL, bringing high-speed internet via copper lines to Japanese homes. #broadband #internet
NTT Data, previously a division, becomes a fully separate subsidiary focusing on IT services and system integration. #IT #corporate
NTT DoCoMo acquires a 15% stake in KPN Mobile, expanding its European presence. #mobile #global
NTT DoCoMo upgrades its network to HSDPA, enabling faster mobile data speeds up to 3.6 Mbps. #mobile #technology
NTT Data acquires the Japanese operations of Unisys, strengthening its IT services portfolio. #acquisition #IT
NTT East and West introduce Hikari Denwa, a VoIP service over fiber optic lines, replacing traditional phone lines. #telecom #VoIP
NTT DoCoMo launches its 4G LTE service under the brand Xi, offering download speeds up to 75 Mbps. #mobile #4G
NTT expands in Southeast Asia by establishing NTT ICT in the Philippines for global services. #global #expansion
NTT Data acquires Keane International, a US-based IT services firm, expanding its global delivery capabilities. #acquisition #IT
NTT Communications expands its global IP network with new PoPs in Asia, Europe, and North America. #network #global
NTT DoCoMo introduces Voice over LTE (VoLTE), providing high-definition voice calls over its LTE network. #mobile #VoLTE
NTT Data acquires Dell's IT services division for $3.06 billion, significantly boosting its US presence. #acquisition #IT
NTT Communications launches its global enterprise cloud platform, targeting multinational corporations. #cloud #enterprise
NTT DoCoMo starts 5G field trials in Japan, partnering with Huawei and other vendors. #mobile #5G
NTT and Fujitsu announce joint research on 5G network technologies and optical communications. #partnership #5G
NTT completes acquisition of Dimension Data, a global ICT solutions provider, merging it with NTT Communications to form NTT Ltd. #acquisition #global
NTT merges its global subsidiaries (NTT Communications, Dimension Data, NTT Security, etc.) into NTT Ltd., a single global ICT giant. #corporate #merger
NTT DoCoMo commercially launches 5G services in Japan, offering enhanced mobile broadband and low latency. #mobile #5G
NTT and NEC establish a joint venture to develop 6G communication technologies and optical networks. #research #6G
NTT Data expands in insurance technology by acquiring Vector Insurance Services in the US. #acquisition #fintech
NTT introduces an AI-powered operations platform for predictive maintenance and network optimization. #AI #innovation
NTT completes the full acquisition of NTT DoCoMo, delisting it from the stock exchange. #corporate #telecom