I have an Archer MR505 currently connected over the cellular network. I bought it when my broadband connection went down. Now the broadband is back, I would like to route my connections through to the broadband router, but use cellular for fallback. I can see from the user interface how to do this, but I have a couple of questions.

The Archer is on subnet 192.168.1.1, which is fine. However, the LAN port on my ISP's router is also on 192.168.1.1.

1. Will the Archer handle this without a problem?
2. If it does, how will I be able to connect to the ISP router's admin page? If I browse to https://192.168.1.1 it will take me to the Archer's admin page.

Thanks,

Julian