Answers:
BT routers are configured to work on BT connections, contained by Theory , you should know how to use it, however, from experience, BT voyagers hold inferior to work on other None BT ISP connections for me, You may want to see if you can find a firmware upgrade for it that will wipe rotten BT settings.
Below is a contact to how to unlock some of BT voyager routers
http://www.puzbie.co.uk/2091unlock...
I believe that you can mate. I assume you parsimonious the address for the router to dial within? if so, the failure to pay should be 192.168.1.254 hope that help.