I have an IPKall number forwarded to my new 3cx SIP server. I use firstname.lastname@example.org. I would assume this would ring ext 100. But I just get a busy signal. I have all the respective ports forwarded to the 3CX machine (I think) and my domain name is resolvable. I have a voip line that I forwarded to ext 100. If I point the IPKall number to email@example.com, the call will complete and go to ext 100. But when I try to go directly, it doesn't work. Any ideas? Thanks.