|Commencement of KDD Terabit Highway (KTH21) Project|
|[Press Release 1999-003]||January 25, 1999|
With a view to establish "KDD Terabit Highway (KTH21)," a huge-capacity, advanced next-generation network for the era of global multimedia communication, KDD is going to start a verification experiment for the project from March this year within Japan and between Japan and the United States. KTH21, based on the Internet Protocol (IP) technology, is a high-quality, economical next-generation network with the ability to deliver ultra high-speed transmission with the magnitude of terabit (one trillion bits per second). Subsequent to successful results of the experiment, KDD intends to switch the existing networks, which have been established mainly for telephone (voice) services, to the Terabit Highway progressively from the year 2000.
Unlike the existing networks which need to be intervened by ATM switches, SDH (Note 1) terminal equipment and others, KTH21 configures an epoch-making backbone network which connects fiber optics directly to high-speed routers, enabling ultra high-speed transmission at a terabit level through the whole network, as well as resulting in cost reduction to less than one hundredth of existing transmission costs.
The verification experiment from March is to be conducted in cooperation with manufacturers, domestic and foreign academic/research institutions and KDD Research and Development Laboratories, Inc., utilizing fiber-optic networks extended along with major expressways nationwide, JIH cables, and trans-Pacific fiber-optic submarine cables. The experiment includes network and application verification for its early commercial implementation, as well as research and development for IP over WDM (Note 2) and other innovative technologies.
Based on the results of this experiment, KDD will go forward switching major domestic trunk lines to the Terabit Highway by 2005, with its expansion to major international trunk lines linking Japan to the worldﾕs principal markets toward 2010.
(Note 1) SDH (Synchronous Digital Hierarchy): An international standard for a hierarchical multiplexing method of signals over digital transmission systems.
(Note 2) IP over WDM (Wavelength Division Multiplex): A technology of high-speed transmission processing with a WDM method by connecting fiber optics directly to routers.
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