Net2phone - Version 10 beta Net2Phone is a new technology which makes it possible to place domestic and international calls from a personal computer to any telephone in the world. Net2Phone enables Internet users with sound-equipped PCs to initiate calls from their computers and transmit them over the Internet to IDT's phone switches. The switches then convert the signal from the "packet switch network" Internet environment to the "circuit switch network" telephone environment. Program is free, service costs money.