A trial shipment of the stick went on sale earlier this year and sold out within days.

The product is actually a VoIP memory stick that turns any PC or laptop with into an IP telephone.

It is aimed at travellers, with the $49.95 price tag making it suitable for everyone from executives to backpackers, gotalk claims.

Customers can choose a plan at the time of registration, with rates starting from 9.9 cents for Australia-wide untimed calls.

More information is available at www.gotalk.com.au