nbn has successfully completed its first trial of G.Fast technology providing faster speeds over copper networks.

22 October 2015

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nbn has successfully completed its first trial of G.Fast technology which will allow users to achieve high bit rates on the existing copper wire. The trial conducted in Carlton, Melbourne, hit speeds of over 600 Mbps over 100m of existing copper wire.

G.fast technology will:

  • Make gigabit-level aggregate bit rates possible by adding spectrum to copper lines. The technology is equivalent to adding extra lanes to a highway. Current VDLS2 lines use spectrum up to 17 MHz. G.fast widens this spectrum to 106 MHz. Anticipated amendments will use frequencies up to 212 MHz and take bit rates to 1 Gbps and beyond. Current lab test have hit 967Mbps on 20m of copper wire.
  • Provide fibre to the premises (FTTP) equivalent speeds without the intrusive nature of an FTTP rollout. The distance between homes and the node, or last mile, becomes far less important with G.fast as it is able to achieve higher network speeds over longer copper line distances.
  • Be used in conjunction with the fibre to the basement (FTTB), fibre to the distribution point (FTTdP) and fibre to the node (FTTN) rollouts under the nbn.

Tony Cross, chief architect of the nbn announced the new technology at the Broadband World Forum in London.

"We are very excited about the potential that G.fast offers. It has the potential to give us tremendous flexibility in delivering very fast speeds to end users in a wide range of different environments," Mr Cross said.

"This is fantastic news because G.fast can deliver exciting new services such as symmetrical speeds, which will offer new possibilities for both residential and commercial end users. We look forward to working alongside our global peers to further develop our understanding of this great technology."

Other jurisdictions exploring G.fast services include Taiwan, where Chunghwa Telecom has launched commercial G. Fast services, and BT in the UK which is in the final stages of trials.

Retail Service Providers are due to begin trials of G.Fast technology in the first half of 2016, with the launch of commercial services anticipated in 2017.