At least 90 per cent of Australians would get broadband speeds of about 50Mbps by year-end 2019 under a Coalition proposal to overhaul the NBN.

The recommendation was made in NBN Co's 60-day strategic review of the NBN, released today with redactions for commercially sensitive material. The review will be used in the NBN Co's next corporate plan, planned for release in the first half of 2014.

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The goal marks a delay from Labor's goal of 25 Mbps speeds for all Australians by 2016. The NBN Co report said there was "no viable path" to achieve that target.

NBN Co said the new plan would cost $41 billion. In comparison, it said Labor's plan would cost $73 billion and take until 2024 to complete, $29 billion more and three years later than Labor had forecast.

As expected, the new plan recommended a move away from a pure fibre-to-the-premise (FTTP) plan to one that includes fibre to the node (FTTN) and fibre to the basement or distribution point (FTTB/DP).

"A multi-technology approach would deploy FTTP, FTTN, FTTB/DP and HFC in addition to Fixed Wireless and Satellite," the report said.

The plan envisions a split of 26 per cent FTTP, 44 per cent FTTN and 30 per cent HFC.

Between now and the release of a new corporate plan -- due by July 1 next year -- the NBN Co will develop a revised statement of expectations (SOE). NBN Co will engage with government and stakeholders to develop the SOE, according to the review.

After the release of the SOE, contract renegotiation with Telstra, Optus, vendors, contractors and RSPs will commence.

More to come.

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