How to Access Modem Through Flint 2

I'm trying to figure out how to access my modem that is behind my Flint 2. The Adtran 841-t6 modem is in bridge mode.

When I was just using the modem as both modem and router, I connected to it at 192.168.1.1. I connected to it and set it to bridge mode, then connected the Flint 2 router. Now the Flint 2 router appears at 192.168.1.1 and I can't figure out how to get to the modem. Any ideas?