I just tried 3cx beta after reading this thread, and all I can say is what a bug fest, I couldnt even get a VOIP account setup using the web management wizard.
Never had a single problem setting up Axon, and 3cx has about 10x the install base. (50mb+ install).
dont waste your time until they release the real version, this should be an alpha, and should never have left the developers machine.
James.