Whenever I press call after dialing it says state : calling for like a half a second the says state : disconnected I've tried 001-aaa-xxx-xxxx, 1-aaa-xxx-xxxx, aaa-xxx-xxxx, and xxx-xxxx. Key : aaa= Area Code, xxx-xxxx= actual phone number. I use Voipbuster. Please help. You can ask for more info.