This year in terms of spending, the company has so far poured $6.1 million into building the Melbourne network. Work started on that in April and is expected to be live in September.

The Melbourne roll-out is expected to cover 35 percent of the city. Spence said it has been a much easier project than Sydney.

"We have learned a lot from the roll-out of the Sydney network and believe we have done a better job in rolling out and designing the Melbourne network," he said. "We expect to get Sydney to the calibre of Melbourne in the next three to six months," he added.

Spence said a lot of thought is also going into how it builds the network for WiMax, which Unwired is expected to make WiMax-enabled in the last half of 2007.

It hopes to have 45 percent of the Australian population covered with WiMax by the end of 2008.