Alcatel-Lucent reported this month next generation DSL technology is a success for the company, with more than five million customers outside of North America now getting speeds up to 100Mbps over ordinary copper telephone lines.

VDSL2 line vectoring delivers more than twice the speed of AT&T’s fiber to the neighborhood U-verse service, and has proved reliable for simultaneous television, broadband, and telephone usage. It will even support 4K video streaming of ultra high-definition video.

Vectoring employs sophisticated noise cancelling to cut “crosstalk” interference to boost broadband performance. Testing has shown VDSL2 line vectoring can offer 100/30Mbps service with copper lengths as long as 1,600 feet. Most VDSL2 services are delivered over telephone networks that replace at least some copper wiring with fiber.

Alcatel-Lucent has shipped enough VDSL2 vectoring equipment to provide service to five million customers, surpassing non-vectored VDSL2. But practically none of the equipment is headed to North American ISPs. Instead, companies including Belgium’s Belgacom, Israel’s Bezeq, KPN in the Netherlands, Telecom Argentina, Telecom Italia, TE Data in Egypt and NBN Co. in Australia have launched vectoring technology, offering service to customers at speeds topping out at 70-100Mbps.

Most customers switched to VDSL2 vectoring see their speeds double, usually from 30Mbps to 70Mbps or more. Providers like Belgacom have been careful to only promise speeds the company can actually deliver. Belgacom’s own tests found 100Mbps service was only completely reliable when the amount of copper between the customer and the company’s fiber connection was kept less than 650 feet, so it has capped customer speeds at 70Mbps for now.

“The prime goal in DSL must be signal quality, integrity, robustness and stability for perfect video grade services,” says the Belgian ISP.

Vectoring technology has been on the drawing board for a decade and is only now achieving success in the market.

Many ISPs are choosing to deploy vectoring because it is less costly than a fiber upgrade and can still meet the speed goals demanded by government regulators. The technology has proven robust even where copper wire networks have degraded. In several European countries, homes are still serviced by indoor copper wiring insulated with paper sheaths.

Alcaltel-Lucent believes even after vectoring is widely deployed, it won’t be a dead-end for DSL service.

The company is working on its next generation “Phantom Mode” technology that combines VDSL2 bonding and VDSL2 vectoring with a traditional voice technology called “phantom transmission.” This combination adds a virtual channel to create three channels over 2 pairs of phone wiring.

In Phantom Mode tests, the company achieved 300Mbps over 2 pairs at 400 meters and 1Gbps (up and down-stream combined) over 4 pairs.

[flv]http://www.phillipdampier.com/video/Alcatel Lucent DSL Vectoring 5-2014.flv[/flv]

Alcatel-Lucent produced this video explaining vectoring technology. (A “CPE” means customer-premises equipment, in this case the DSL modem.) (3:09)