The TP-Link says that ADSL isn't available on the line - yet it is because I am using the ADSL on the Thompson to write this post. Note that this is the second one of this model that I have had as I swapped the riginal out with the retailer for the same reason. Everything else - wireless, ethernet, etc is working fine.
Is there an incompatibility between my phone line and the TP-Link chipset? What can I do?