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NBN Co, Nokia in XG-FAST copper trial

Byron Connolly | Sept. 1, 2016
XG-FAST provides multi-gigabit speeds over copper networks

NBN Co and Nokia on Wednesday announced a trial of XG-FAST, the latest generation of broadband access technology operating over existing copper networks.

XG-FAST – a Nokia Bell Labs-developed extension of Nokia’s technology – provides multi-gigabit speeds over copper networks.

Previous XG-FAST lab trials using standard copper cable in Germany have demonstrated aggregate data transmission rates exceeding 8Gb/s over a 50 metre line length. A trial by BT in the UK delivered aggregate speeds of 5.6Gb/s over 35m2, Nokia said.

The Australian trial will use the latest full duplex (FDX) XG-FAST technology over a range of different copper cabling, including a standard two-pair copper cable typically used between streets and premises. Up to 500MHz of spectrum will be used to transmit data simultaneously upstream and downstream.

Nokia said it has conducted trials with more than 38 operators globally and has three commercial customers.

NBN Co’s CTO, Dennis Steiger, said XG-FAST cloud offer a much faster and cost-effective way to deliver multi-gigabit speeds to premises on the national broadband network “aside from trying to connect them all to fibre-to-the-premises (FTTP) technology.

“We already know from lived experience that trying to get a fibre connection into every single premise can be a complicated, time consuming experience – so we need to look for other solutions,” he said.

“Our primary goal is to continue with our current deployment of the FTTN/B network in order to get Australians on board the national broadband network as fast as possible. Once that is completed, we can then look at how we might push fibre deeper via FTTdP to deliver ultra-fast speeds via XG-FAST,” he said.


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