Android-based device

You may make and receive calls, using free application "IP-Phone" from Android-Market

iOS-based device (iPhone, iPad)

You may make and receive calls, using free Mac application "Nimbuzz"

device Java-based

You may make and receive calls, using free application "IP-Phone" from Android-Market

Any mobile phone (SMS-callback)

With this service service you can connect two phone numbers mentioned in SMS This service is available only for SMS sent from the number registered.