I cannot hear the Skype call in my telephone handset.
Possible Solution:
Verify that Skype's sound devices are set to use the USRobotics Virtual Audio as follows:
Select Options from the Skype Tools Menu and select Sound Devices.
Verify that the USRobotics Virtual Audio is the selected device for Audio In, Audio Out, and Ringing.
If Skype has a different sound device selected, select USRobotics Virtual Audio for Audio In, Audio Out and Ringing and click Save.