Hi. Use an ethernet cable to connect the NBN box to the LAN4/WAN (combined) port on the router. Do factory reset on router; it may detect the type of connection.
In Internet Connection Setup, select VDSL, enable VLAN ID, set it to 2, internet connection type is PPPoE, then your username with @TPG.com.au on the end and password.
NBN box should have 4 blue lights on (power, link, DSL on; 4th light may blink).
I have tried several times but was not successful.
I have reset as factory reset, and connected and left 30mins. In this point light on NBN box is still amber, no blink.
I selected "TPG internet (ADSL)" when quick setup. Then no VDSL setup page navigated. Setup was failed.
I also selected "Others" on quick setup. I have setup VDSL but it seems no EWAN setup section. It seems it needed to be ADSL setup in the section.
I have added two "pppoe_ptm" (VLAN ID =2) and "pppoe_8_35" (ADSL) with @TPG_acs in internet section, same as AC1600, but it did not work.
Do the reset and quick setup again.
Select Other in ISP list, but do the rest as in my first post.
Use your own username and password, not the acs one.
You don't need to add any pppoe names.
Do Save at end.
Does the Internet light on the router turn on?
If not, what lights are on NBN box? Link, DSL, LAN?
Finally I could connect to the Internet by your explanation, thank you.
But LAN light on NBN box is still amber even if I can connect to the Internet. Additional setup is required?
Info on NBN box (NDD0300) says that blue or amber is ok. Flashing means network activity.
You should try some speed tests at different times to see how it compares to your plan speed.
Use your computer on ethernet.