PhonerLite is a clearly arranged and easy to use application for Windows. PhonerLite enables your PC to use it for internet telephony (VoIP, Voice over IP). Pre-conditions are a full-duplex sound card, a microphone and speakers (alternatively a headset), an internet connection and a registration at a provider supporting the protocol SIP. PhonerLite supports several SIP profiles, each configurable independently. In the same way the integrated phone book and call log are easy to use.