Who would you recommend to use as a VOIP provider (in Europe in particular or worldwide in general)? I ask because I'm based in Europe and currently use Voip.ms, I have issues with their Caller-ID to most countries in Europe, even though I've set all my caller-id settings as they recommended. I also see some companies in the US offer packages where you can make unlimited international calls, but this is with use of their proprietary hardware for home users, is there anything equivalent for PBX use?