Calisto Pro: Skype and Yahoo
Skype and Yahoo are the only two soft phone that you will be able to use the Calisto Pro with. You will be able to use it with VOIP applications like Vontage, Comcast , etc as long as you have the Vontage, Comcast, etc box that you plug a standard analog telephone into. Also, in order to use the Calisto Pro with your PC, you must install Persono Call and Skype or Yahoo. Under Sound Playback and Sound Recording default devices, make sure the Calisto Pro is NOT selected. You will never be able to test the Calisto Pro in the sound recorder.