Use Ekiga (GnomeMeeting) and call toll free lines in US free of cost

Ekiga is a Voice over IP client available for both Linux and Windows.

Register at You get a SIP ID as with a numeric alias.
Download Ekiga, Opal and pwlib from the Fedora 7 website.
Set up your microphone:
$ gnome-volume-control
Choose OSS device. Change to add MicBoost, Mic1, Capture. Change device to ALSA.
Set up Mic volumes read and gree to be ON.
Start ekiga as $ nrtsdsp -m ekiga and setup preferences.
Call other people using
To dial US toll free numbers, call *013- like this *013180011200121
Test your phone with