Bt business hub system password

[bazza]

I am trying to replace my old home hub with a new BT business hub, but cannot connect to the internet, when entering set up I am asked for a system password, where would I find this?

[MHC]

The password is the serial number of the unit and is 12 digits long:

The first two are the week of manufacture followed by the year then 8 serial digits - so it will look something like:

261119012345   or   331019067890   you will almost certainly have 10 or 11 in the positions shown in bold.

[danhague]

Is this also available at the back of the router? Like all usual routers with the user and pass print on a sticker at the back?