"When you hear people saying that 'the government hasn't done this' or the government hasn't got that detail right' ... God, this is the biggest change this country has seen since ," he said. "It is a huge change and we are just at the start.

"We are not building an NBN for smartphones. The purpose of an NBN is not so we can have more iPhones and iPads. This a is a piece of national infrastructure."

Coutts also weighed in on the wireless-fibre NBN debate arguing that the two technologies would complement each other.

"Mobile broadband is absolutely fantastic, it is doing what I thought it was going to do, and it absolutely needs an NBN. There will be an overlap between mobile broadband and the NBN, but one will stimulate the other," he said. "They are Siamese twins."