Sunday, March 15, 2009

Ikanos and Sumitomo Electric Networks Present Papers on VDSL2 Stabilization

Papers co-authored by Ikanos Communications and Sumitomo Electric Networks on the effectiveness of online reconfiguration (OLR) technology in combination with the most advanced very high speed digital subscriber line (VDSL2) technology will be presented by Sumitomo Electric Networks' technologists at this week's Institute of Electronics, Information and Communications Engineers general conference.

As part of OLR, Ikanos' Rapid Rate Adaptation (RRA) VDSL2 technology -- an ITU-T SOS standard-based offering -- allows service providers to maintain link connectivity, even when signal-to-noise ratio (SNR) margin drops below normal operating levels. The technology enables transceivers to monitor line conditions and dynamically adapt the data rate without interrupting service for retraining, as long as there is adequate bandwidth to absorb the impact of the noise. Ikanos' chipsets also use on-chip quality of service (QoS) capabilities to enhance RRA by prioritizing traffic and quickly communicating the status of the link to other layers in the network. RRA in combination with OLR technology further enhances the stability of broadband services.

"In deployment scenarios, VDSL2 lines are bundled, thereby providing the potential of disturbance noise caused by cross talk," said Dr. Yasushi Kida, director at Sumitomo Electric Networks, Inc. "OLR technology, combined with Ikanos' industry leading VDSL2 access technology, prevents link drops and secures SNR ratios. These improvements are designed to ensure that premium services, such as triple play and interactive broadband over VDSL2, are not interrupted in noisy conditions."


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