In order to make phone calls via the Internet one’s device has to be compatible with Softphone software. In example in order to call from a PDA using VoIP technology one has to install Softphone software, in order for it to work properly, PDA has to have Softphone compatibility.
WavNet Communications, Inc., (WavNet-US) designs, supplies and operates fixed wireless broadband networks for service delivery of voice, video and data services utilizing WiMAX technology