The National Broadband Network (NBN) roll out is heading the right direction, according to NBN Co chief executive Mike Quigley and more will be accomplished once its $11 billion deal with Telstra Corporation gains approval from the competition watchdog.

Quigley said that sizeable chunk of NBN roadmap relies heavily on the structural division of Telstra's wholesale and retail realignment, which would also transfer the giant telco's existing copper wire network to NBN Co's management.

The only stumbling block for the NBN-Telstra deal to be formalised is the nod coming from the Australian Competition and Consumer Commission (ACCC), which the government regulator said will be handed down before Christmas.

"We're reasonably confident the deal will be approved by the ACCC because certainly our belief in NBN Co is that this is a good deal for the nation," Quigley told ABC while noting that many contracts that have been entered into by NBN Co hinges on ACCC's favourable ruling.

The NBN chief added that once Telstra's separation has been finalised, "we'll see a new broadband infrastructure being built right around the nation."

And that broadband services will be available for all Australians, Quigley insisted, irrespective of their income bracket.

He rejected suggestions aired during the parliamentary joint standing committee hearings, that despite its claims, the NBN Co management appears to be adopting price matrix that are unreachable for families with moderate income capabilities.

However, Quigley said that at an average retail price of $35 per month, the high-speed internet access is hardly unreasonable as he pointed to some 18,000 households at 3000 NBN spots now enjoying broadband connection.

"We sell to resale companies and what we've in fact plotted out, the retail prices which have now been announced by seven retailers ... they're sitting exactly in the band of ADSL2+ ... and it's where we aim to be for a service which is much superior to ADSL2+," the NBN chief stressed.

At its present rate, Quigley said, the NBN retail rate, as offered by its local partners, stands on the ideal rate that even low-income earners in Australia can afford.