Telstra plans to draw on its millions of broadband and NBN customers to create a huge network of Wi-Fi hotspots.
Australia's biggest telco will officially switch on its Wi-Fi network, Telstra Air, on Tuesday with 4000 hotspots, mostly converted payphones, in 250 cities and towns.
The network will allow Telstra customers to draw on their home broadband allowance when out and about, rather than using more expensive options like mobile data.
But the company plans to spread the network far wider by using its customers' modems: Telstra has about 2.6 million internet customers, more than one million of whom have modems capable of becoming hotspots.
"The real strength comes from home customers joining our network and converting their home gateway to become part of the network and we expect that to become millions [of hotspots]," said Telstra's networks general managing director, Mike Wright.