You can call from your Computer to any phone of the world. You should have an user id and password to call any destination. You can use demo user id and password: user id: user1; Password: pass1.
Full Specifications
What's new in version 1.0.1
General
ReleaseNovember 13, 2012
Date AddedNovember 13, 2012
Version1.0.1
Operating Systems
Operating SystemsWindows Vista, Windows Me, Windows, Windows 2000, Windows 8, Windows 7, Windows XP