Headcall is free video & voip service

make free call around the world
unified internet phone number

permeate all NAT without specal configuration
detect your network condition in time
adopt own P2P encryption with absolutely secure

support big video with DVD digital quality

usage as the same as regular telephone
own better quality than regular phone in voice
own all functions of telephone and fax machine. and transfer file in addition

support using computer + sound card + microphone + camera( optional )
support using computer + USB phone + camera( optional )
support using internet phone or video internet phone
support using regular phone + PPG switch box

support PDA + Wi-Fi / WiMAX / GPRS
support call to PSTN via enterprise gateway or telecom gateway
100% free + 0 % charge    download and run