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(WEB HOST INDUSTRY REVIEW) -- Japan-based communications provider Nippon Telegraph and Telephone Corporation (www.ntt.com) has developed a new technology that facilitates the on-demand transmission of gigabit-class video transmission, which has been successfully proven on a testbed network.
According to its Tuesday announcement, NTT verified its achievement in a wide area experiment in cooperation with National Institute of Information and Communications Technology (www.nict.go.jp), using GEMnet2 and JGN2plus, the R&D testbed networks from NTT and NICT, respectively. This advancement lets users achieve steady transmission of high-density video such as HDTV by acquiring a path in the network whenever it is needed, without allocating additional network resources or re-optimizing the provisioned network resources.
NTT plans on demonstrating these results at the upcoming SC09 conference (sc09.supercomputing.org) held in Portland, Oregon, this week, using an international connection between the test network and the exhibition booth.
NTT labs had previously developed i-Visto, a technology to transmit uncompressed video streams through IP networks. It, however, required a very large bandwidth of more than a gigabit per second so users could not start the transmission immediately, having to wait for the network operator to allocate network resources along the transmission path.
Using high-speed IP-optical networking, NTT's new network technology automatically sets up a very large bandwidth circuit in the optical network as soon as the user makes a video transmission request.
Another hurdle was quality degradation, which is prevented using special equipment to measure the accuracy of the video stream packets at multiple points in the network. NTT's new PC-based technology that can be placed at many points in the network with the ability to observe any change in the behavior of the video stream packets – changes which could result in quality deterioration.
The achievement was sponsored in part by NICT, under the "Research and Development of Dynamic Network Technology" project.
NTT plans to further enhance its network and video collaboration, allowing greater functionality, such as adaptive control, so that it can be used by broadcasters and other high-end users. NTT hopes this technology will eventually become used in many other arenas that can benefit from high-resolution video, such as telemedicine and e-learning.
NTT's is the latest new technology to be showcased at the SC09 conference. Earlier this week, optical transmission equipment provider Infinera (www.infinera.com) announced it is showing a pre-production 100 Gigabit Ethernet Module designed to deliver 100GbE services in today's Infinera DTN and over today's network infrastructure.
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