Hello, there
There are numerous requests out there inquiring about using the Magic Jack telephone device on Linux, and I have created a pdf tutorial on how I was able to get the Magic Jack to work after six months of research and a great loss of some much needed rest. Please click the link below to view my tutorial on how to configure your Magic Jack for use on Linux. I would appreciate input on this and for others to verify my findings for extra assurance. Thanks.
http://brandinscotthess.tripod.com/mjtutorial_linux.pdf

