Windows Vista x64 - Bluetooth phone DUN connection issue

Error 619: "The port was disconnected."

Solution (based on DiGi connection):

1. open Device Manager
2. Modem --> open Properties for Standard Modem over Bluetooth link
3. on Advanced tab's Extra settings, add --> +cgdcont,"ip","diginet"
   

Error 734: "The PPP Link Control Protocol Was Terminated"

Solution: http://support.microsoft.com/kb/318718