I am testing Swichvox SMB running on a VM. I'm trying to register a softphone (X-Lite) but can't get it to register. All machines are behind a D-Link DIR-655 on the same network. I've tried Mac and Windows version of X-Lite, and even Bria for the iphone. I get a 403 error from the iphone. I can reach the admin console and log into the extensions from a browser on all devices. Any help would be appreciated. Thanks.