Vendors Closing in on 1Gbps Using DSL
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26 October 2010 |
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DSL vendors are using a variety of methods such as bonding several copper lines, creating virtual ones and using advanced noise cancellation to increase broadband over copper to several hundred megabits per second.
At the Broadband World Forum in Paris, Nokia Siemens Networks became the latest vendor to brag about its copper prowess. It can now transmit speeds of up to 825M bps over a distance of 400 meters, it said on Monday.
However, the company isn't alone in wanting to tell about the kind of speeds next-generation DSL (Digital Subscriber Line) systems can achieve. Last week, Huawei said it can transmit 700M bps over the same distance. Today, Alcatel-Lucent said it has achieved 910M bps in its latest round of tests over 400 meters, according to a spokesman.
To boost DSL to those kinds of speeds, the vendors are using a number of technologies. One way is to send traffic using VDSL2 (Very high bit-rate Digital Subscriber Line) over several copper pairs at the same time, c ...
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