I just recently installed an ip office 400 digital station to go with our ip 403 base. I got it installed and it shows up in the control unit in the Manager program with the correct extensions and everything but when i hook a 4412d+ phone to the digital station the little voicemail light blinks like it should but then nothing shows up on the phone for display but i can hear a dial tone but i can't dial out. Anyone have any ideas what is going on?