Turnbull also used the OECD recommendations to reiterate the Opposition's concerns with the .

The comments stand in contrast to those of the Prime Minister, who in October claimed Turnbull's calls, and private member's bill, to have the NBN referred to the Productivity Commission was a stalling tactic, and would only hurt consumers.

"...We are urging the Opposition today to not delay [the Telstra separation] bill," Gillard said. "Do not delay and cause extra days of higher prices and less choice, particularly for those Australians who live in our regions."

Senator Conroy has also repeatedly said that the economic case for the NBN had already been made, making redundant the Opposition's call for a cost-benefit analysis.

"The Productivity Commission will be a complete waste of taxpayers' money to be engaged in this," he said. "They are wilfully delaying millions of Australians from getting a fairer deal on broadband and telecommunications services."