As with previous versions of 3CX, during the day I loose my registration with Vonage. 3CX should be able to re-register on occasion (like the rest of my devices do back to 3CX) but it does not. I have to force it by doing a fake modfication of the VOIP page, then everything works fine. This is a "deal killer" for me. I can't use this product (free or otherwise) if it won't stay registered with my VoIP service.