Communications Minister Stephen Conroy has announced that the maximum download speeds on offer on the fixed-wireless and satellite services on the National Broadband Network will be more than doubled from 12 megabits-per-second (Mbps) down and 1Mbps up to 25Mbps down and 5Mbps up.

The two services are scheduled to be up and running in 2015, and will serve the last seven percent of premises not covered by the NBN fibre rollout.

Conroy told ABC's AM program this morning that, following a series of tests, NBN Co would offer the 25Mbps/5Mbps service on the fixed wireless service in June this year, and on the satellite service once it has launched in 2015.

"This is a quantum leap for broadband services in the most remotest areas of Australia. It's currently at 12 meg down, 1 meg up. But what we're able to confirm now following all the testing is that we'll be deploying 25[Mpps] down and 5[Mbps] up for our fixed wireless network," he told AM.

"And what's very exciting is that our satellite network will also be able to deliver to the most far-flung Australians a 25 meg download and 5 meg upload speed is about the best in the world — a better service than ADSL 2+ in Sydney, Melbourne, Brisbane, and the metro centres."

Currently, NBN Co has an interim satellite service in place that has a maximum of 6Mbps down speed.

As of the end of December 2012 , a total of 23,100 are on NBN Co's interim satellite service, while 1,000 are connected through the fixed-wireless long-term evolution portion of the network.

We will update this story when more details are available.