I've successfully used my own router with BT Infinity for business and figured I'd post this to help anyone who might want to do the same.
The OpenReach VDSL modem that BT supply must be used and (at the moment) can not be replaced with an alternative.
However, the router that is connected to the modem can be.
Any 'cable' type router should work fine (i.e. the ones that are normally used with Virgin's Cable based connections).
In my case I'm using a Linksys/Cisco E3000.
All that needs to be done is firstly, before you're switched over from ADSL, you need to know your username & password.
The username is usually something like:
Bxxxxxx@hgxx.btclick.com
Obviously with all the x's as numbers.
Your password will be the one you selected when signing up.
Secondly, on the router you will be using, you need to set the connection type to PPPoE. Set the username value to the one above, and the password value to the password you selected.
That's it!
NOTES:
Currently there is only one manufacturer who makes an integrated VDSL modem/router, but this isn't easily available (or reasonably priced), plus BT won't support it...so for those looking for an 'all in one' solution like you may have had for ADSL, you're out of luck for now.
