NTT debuts global virtual network advances

11 November 2011 | Guy Matthews


NTT, Japan’s incumbent telco, said it has developed a technology for the dynamic provisioning of a global virtual network for the support of the advanced applications of the future.

It said the technology is capable of creating a network that can span the globe by stitching together circuits provided by different network domains.

NTT claimed issues like QoS will be managed by control mechanisms such as measurement-based optimal path selection, path redundancy and path switchover.

“Emerging network-based applications such as telemedicine, cloud services, grid computing and high-density video streaming are expected to shift our lifestyle to another stage,” said NTT president and CEO Satoshi Miura. “However, the internet, in spite of its global reachability, may not be capable of supporting deployment of these future applications since they have severe requirements such as huge bandwidth capacity, and low latency, jitter and packet loss rate.”


He said NTT’s laboratories have been working on IP-based optical networking technologies, for example to allow the operation of multiple virtual network topologies on a shared physical infrastructure, dynamically optimised to respond to traffic demand fluctuations.

Following a trial of 100Gbps optical transmission on its PC-1 trans-Pacific submarine cable system, NTT confirmed earlier this month that in 2013 it will put into commercial service its digital coherent transmission technology. The upgrade will boost the PC-1’s transmission capacity to 10Tbps, more than triple its current capacity of 3.2Tbps, said the carrier.