I'm using SKYPE for SIP provider. Firewall Checker Passes All Phases. Outbound calls are successful. Inbound call aren't showing up in the log. I have logging set on Verbose and all it shows is: 03:03:22.598 Currently active calls [none] When I use my cell phone to call my SKYPE #, I hear it ring 4 times and then rings busy. But 3CX logs show nothing. I have that line directed to Extension 51 which is my Polycom 330 and [X] Allow Inbound Calls is checked (default). What should I check next??