Karpuza.com offers phone calls trough internet. To take advantage of that you need VoIP phone. Hardware VoIP phone as well as soft-(USERNAME and PASSWORD) for the configuration of the phone under “SIP/IAX INFO” tab in your account.
We recommend you to use the softphone ZoIPer:
Due to security concerns, the VoIP option is not enabled by default. If you want to have it activated for your account, please email us at help [@] karpuza.com and we’ll have it activated within one bussiness day.