"Can I tell you what Australians will use the NBN for in 10 years' time right now? No; but history shows that when you provide essential infrastructure, innovation transpires -- and fast," he said.

"Five years ago Twitter and YouTube didn't exist. It's barely 10 years since Google and peer-to-peer became part of the Internet and they have simply revolutionised the way that consumers access information."

From an ISP perspective, Buckingham said NBN Co had delivered on its promise of openness and input during the design phase of the network.

"Our engineers have worked closely with NBN Co over the past two years and we're very happy with the technical specifications that have been delivered to date," he said.

, calling on the government to use next week's budget to demonstrate how the National Broadband Network (NBN) would be delivered and at what cost.