I thank the senator for his questions and ongoing interest in the NBN. Last week I released NBN Co's 2012-15 corporate plan. Important progress has been made by the government and NBN since the publication of the 2010 corporate plan. Since then legislation has been passed, contracts have been signed, firm agreements have been put in place and there is greater regulatory certainty. With this greater certainty the capital cost of the NBN is $37.4 billion, a modest increase of 3.9 per cent.