I had a wired router bt voyager 190 adsl ... wouldn't connect to aol no adsl light!
The BT Voyager 190 is more 'helpful' than you may be aware of.
Power off the Voyager 190 and your PC.
Disconnect the Voyager 190 from the telephone line.
Connect your PC directly (no intermediate routers) to the Voyager with an Ethernet cable.
Power on your PC and the Voyager 190.
Using your preferred web browser, connect to http://192.168.0.1/ (no login details required).
The web page will automatically update every 20 seconds (or less) and show your connection/line stats, but you're line is not currently connected.
Connect the Voyager 190 to the telephone line.
Post the line stats.