I'm not sure ... with the modem connected there will still be sync and the line characteristics monitored and it should not need a modem.
I can disconnect my router, connect a PC to port2 of the modem, power up and I can see all of the line stats, sync &c. Anything which is monitoring the line condition does not need to know the login/user details, just eh circuit number and should maintain the database on that basis.
Did you hack your modem to see those details, or could you get them some other way? Which modem do you have?
I understand that if you run a second ethernet cable from modem lan 2 to a lan port on the router, you can see the modem as 192.168.1.1 without moving your PC connections around.
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Moved (with trepidation) to BT Infinity 2 for upload speed. Happy BE user for several years.
Moved (with trepidation) to BT Infinity 2 for upload speed. Happy BE user for several years.