In reply to a post by Banger:

The billion is in pure bridge mode, so effectively a modem, I just replace the billion with the HG612 to LAN4 which is the wan port it is set for PPPoE and works with billion.

That all sounds OK.

I think the question is will a locked HG612 work in ADSL mode it seems to sync or does it have to be unlocked first as someone else in this thread suggested or do I need to look at my router connection settings?

I'm afraid I can't help you there Tim- I've never tried to connect any sort of HG612 to any sort of ADSL line. Sorry

Yes solid green but the Asus says disconnected.

What is the 192.168.xxx.xxx address of the ASUS? It shouldn't matter, but worth thinking about.

It is 192.168.1.1, tried changing to 192.168.3.1 but no go.

Found https://forum.zen.co.uk/forums/thread/44338.aspx doesn't look if its possible.

You'll have to unlock it to modify the settings to make it work, as I said before.

As Batboy says you need an unlocked HG612 to allow you to change the settings for an ADSL connection. I have done it for my ADSL Max line. The main thing is the default config for VDSL uses PTM whereas ADSL is ATM. This link is a long and confusing thread that has the info but needs careful reading to find the correct config data. HG612 ADSL bridge

As the modem doesnt support bridged adsl just vdsl and looking at the Zen link they couldnt get it to work with Zen I might just wait 5 months or so for vdsl, plus I dont think the SNR is tweakable like the billion.

The modem does support bridged ADSL as that link shows and the SNR is tweakable. BUT you have to unlock it first.

Well my HG612 has been operating in bridge mode with a separate router handling the pppoe authentication perfectly well for a couple of years, running at full 8128Mbps sync. So it certainly can support a bridged ADSL connection, but it does need setting up correctly. As for SNR tweaking I can't comment as my line doesn't need it.

I haven't got time to unlock it, will just wait for vdsl.