I thought I'd look that unit up. When I saw the price I nearly fell off my chair! Nearly 10X the price I would expect to pay for home use these days!
To rub salt into the wound - there seem to have been issues with this unit on UK ADSL connections, and people are suggesting upgrades to IOS plus some patches.
As this unit is new I'd suggest that you go back to where you bought it and get them to set it up for you, or demonstrate it working.