Just wanted to let you all know that want to use 3CX and mac ( osx ) there is a app called Telephone, in the app store that is free. I just downloaded it configured it and it works great. Nothing fancy like the windows, iphone & androiod app, but for those of you out there that want to use your sip account on a mac, i got mine working. Dash. If you need pics screen shots etc etc, let me know.