I have just setup a new 3CX account along with GrandStream 4108. I am hosting 3CX on a private server running Windows Server 2003 SP2 Enterprise Edition. I followed everything according to the manual but still can't get incoming or outgoing calls. When I make calls, I get no ringing on the phone and after a while I get a error message saying "server internal error." I am not sure what I am doing wrong. Please recent activity log from 3CX and screen shot of status page from GrandStream. Any help in resolving this will be greatly appreciated.