3CX
3CX Phone System for Windows Free 5.1
3CX VOIP Phone System FREE edition is a SIP-based IP PBX developed for Windows. Easy to install & configure, it eliminates phone wiring & allows hot desking. Lowers call costs via VOIP providers & eliminates vendor lockin. Download FREE edition!
Cellular Phones > 3G, GPRS, EDGE, Bluetooth