I have a Cisco 857 router. Recently the ISP (BT) have upgraded the ADSL line to ADSL2. Since then, the router is unable to obtain an internet connection. The CD light flashed constantly, and the PPP light never comes on solid.
There have been no changes to the router config. I tried resetting the router to factory defaults, then giving the router a basic config, but I still get the same result.
My ADSL settings:
Address: IP Negatiated
Authentication: Chap & Pap
As a test, I swapped the Cisco 857 for a Netgear 834, and the Netgear connected straight away.
Can anyone suggest anything I can try?