@ArcherC8 Thanks for the due diligence and suggestion. I'll take the house modem to the office tomorrow and see if it works with both new routers there. (And take the office modem to house, and see...

@ArcherC8 - Thanks for the quick response. I tried the suggestion, but no dice. I still have the orange light. If it matters, the modem has no on/ off button. So when you plug it in, it's on....

My Archer ax23v router can't get internet signal from modem (orange light). I have two of these - both can connect with no problems to NTT modem at office. But both cannot connect to NTT modem at...