AKLWestie: Did you order VDSL or ADSL from spark? You have a HG630b which suggests you ordered VDSL because spark give ADSL customers another brand of modem.
Do you have a master filter installed?
Sounds like you ordered VDSL but the install and/or provision was not done properly.
I did order it from Spark but the modems we have were given to us at our previous address-- should we be using a different modem?