The main thing would still be the same in this modem as the Binatone, you would need to setup the WAN/DSL bit to bridged, while tagging the VLAN to whatever it is currently setup to (100 I think).
Apart from the you would need to turn off the LAN DHCP server and also the wifi on it.
If you can provide screenshots of the WAN/DSL settings page, I could give you better info.