DSL lines might not really be the sexiest thing in networking anymore, but what they are is ubiquitous, so let's not begrudge Huawei its feat here. The Chinese telecoms facilitator has shown off a new prototype that can pump 700Mbps of data across a 400-meter expanse. This is done by bundling four twisted pairs of copper wire together and sprinkling in some fairy dust to make them communicate at 175Mbps each. The clever bit here is in how crosstalk and interference are minimized, and Huawei claims a 75 percent improvement in bandwidth as a result. An immediate opportunity for these new cables will be, ironically, with fiber rollouts, as they
