Free VOIP / SIP phone (softphone) for Windows. Use your PC as a phone. Works with popular VOIP providers and SIP PBX`s (including 3CX Phone System). The interface is easy to use and similar to that of popular Smartphones. 3CXPhone is compact and easy to install across a network. Features include Call Transfer, Call Recodrding, Hold, Headset support, Call History. Full version, not a lite version! Free download from http://www.3cx.com