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Ars Technica: Bell Labs pushes 10Gbps over copper telephone lines
2014-07-09 9:01am -07:00T Visit Ars Technica


Outtake:

Alcatel-Lucent's Bell Labs claims to have "set a new broadband speed record of 10Gbps using traditional copper telephone lines" in a research project that could ultimately bring gigabit speed to broadband networks that combine fiber with copper.

Those 10Gbps speeds can only be achieved over 30 meters; at 70 meters, top speeds drop to 1Gbps, according to today's announcement. Alcatel-Lucent says that 1Gbps upload and download speeds may be possible in the real world over networks that bring fiber to the curbside and rely on copper for the final few meters. Such a setup would be similar to AT&T's U-verse fiber-to-the-node service, although U-verse places the fiber about 600 to 900 meters away from homes and currently tops out at 45Mbps.

To reach the higher speeds, Bell Labs (which became famous when it was still part of AT&T) is relying on a new DSL standard known as G.fast, which promises up to 1Gbps over copper phone lines. Alcatel-Lucent says that Bell Labs has developed an extension of G.fast called XG-FAST.

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