Ericsson has used techniques including line bonding and crosstalk cancellation with VDSL2-based technology to reach broadband speeds of 500Mb in testing.
If eventually rolled out onto the commercial market, the development could mean much-increased speeds for home broadband customers connected via copper wires.
The ability to use copper wire as backhaul for mobile broadband base stations also brings up new possibilities for next-generation Long Term Evolution 4G broadband.
"This demonstration confirms Ericsson's leadership in broadband access technology and our commitment to the continued research and development of DSL technology to improve operators' business with new access solutions," commented the firm's chief technical officer, Hakan Eriksson.
"It also proves Ericsson's abilities to provide future mobile backhauling, which will enable quick and cost-effective introduction of LTE solutions."
Line bonding involves the bundling of a number of copper lines in this case six were needed to reach 500Mb over a distance of 500 metres.