免费打电话的工具voip buster

今天在网上发现一个可以受限的免费打电话的软件，voipbuster。目前使用该软件可以免费拨打一分钟，一分钟后自动挂断。


Free calls to any regular phone in:
Australia
Austria
Belgium
Canada
China
Czech Republic
Denmark
Finland
France
Germany
Greece
Hungary
Ireland
Italy
Luxembourg
Netherlands
Norway
Portugal
Spain
Sweden
Switzerland
Taiwan
United Kingdom
United States