Nokia Siemens claims world DSL bandwidth record

Stuart Corner
Tuesday, 26 October 2010 23:10

Business IT - Technology

Nokia Siemens Networks claims to have achieved 825Mbps over 400 metres and 750Mbps over 500 metres using 'Phantom DSL' technology.

Nokia Siemens says that, with this performance, "network operators could optimise existing, widely deployed copper infrastructure to provide bandwidth-intensive services for years to come'¦Phantom DSL promises a bandwidth increase of 50-75 percent over existing bonded copper lines. This prolongs the life of copper networks, delaying the need for fibre rollout and protecting operator's existing capital investments.

"The promised high speeds will enable a whole new range of end-user services and open up new revenue opportunities for operators. The technology could be used to test initial demand for very high bandwidth services."

However it has given no indication of how performance decreases beyond 500 metres. In April Alcatel-Lucent also claimed a breakthrough using DSL phantom mode - 300Mbps over 400metres and 100Mbps at 1km.

According to Nokia Siemens, the technology "involve(s) the creation of a virtual - or 'phantom' - channel to supplement the two physical wires that are the standard configuration for copper transmission lines.

It is showcasing the technology at the Broadband World Forum 2010 in Paris, October 26 - 28 and says that Phantom DSL will become an integral part of its hiX 562x/3x DSLAM products, but has given no time frame.