Optus has announced plans to trial wireless broadband in Sydney in a bid to take on rivals such as Unwired Australia.
Optus said it would start a technology trial for wireless broadband in Sydney in February, six months after Unwired launched its wireless plans in August this year.
Optus will conduct its trial in co-operation with wireless technology company UTStarcom.
Unwired chief technical officer Eric Hamilton said the Optus announcement showed that wireless broadband was a legitimate alternative to broadband through a cable or telephone line.
Last month, Unwired and Optus agreed to an out-of-court settlement after Optus complained about the slogan "surf anywhere" on Unwired's billboards. Unwired only provides coverage of 90 per cent of the Sydney population.