This article says “more than 600,000 Australians are expected to be using internet-based telephone services by mid-year,according to research by Market Clarity.Many will be pay services capable of making calls to the existing phone network,they say.By the end of June, almost 610,000 users would be using voice over internet protocol services, up from 410,000 at the end of December, Market Clarity chief executive Shara Evans said.The figure includes free services,such as Skype,and paid subscription services”.

VoIP picking up pace