Connecting Billion 7800VPDX to Netgear CM500V

I'm trying to use the Billion 7800VPDX as a wireless router for the Netgear CM500V cable modem (on Optus Cable).

I've plugged the ethernet cable from the Netgear to Ethernet 4 (EWAN) on the Billion. 
I've set the connection type to PPPoE. I've set the username to my @optusnet.com.au account and password. 
I've set Q VLAN ID tag to "2" and 802.1P Prority to "0"
I've tried turning off the Netgear modem for 15 minutes.

But I can't get it to work.

any help would be appreciated