SMS
  Text to +61429883430 (World-Wide) or +8615001030900 (In China)
Web
 
On the Web: http://www.tokiva.com/signup.html
After sign up, you can make calls on the web directly without downloading any software.
 
IM

  Add Tokiva as IM buddy, and simply IM Tokiva to call.
 
Mobile
 
http://www.tokiva.com/download.html http://wap.tokiva.com