Unable to Change DNS Settings on ISP's Titanium 2122A ONT Router

I’m currently using an Titanium 2122A router (ONT) provided by ISP, and I’m facing some challenges with accessing specific settings. I cannot find the options for bridge mode or DNS settings; they are grayed out in the router's admin panel. I've tried accessing the router using RouterSploit, but there was no Telnet or SSH access available. Here are the steps I’ve taken so far: Attempted to access the router's web interface to change DNS settings but found them inaccessible. Contacted my ISP for support, but they were unable to provide a solution. Checked for any firmware updates but couldn’t f

Question by spacewalkie on Super User, licensed CC BY-SA. We show a short excerpt and link to the original thread as credit.