Do you subscribe to a POTS service with AT&T that you are trying to connect to your Line port in order to place and receive AT&T (landline) calls using the phone attached to your 110? I ask because most UVerse customers get UVerse voice service, as opposed to just UVerse DSL + POTS phones. Another way of phrasing the question is: do you get two bills; one from AT&T and one from UVerse?
If you don't, I don't know what you're trying to accomplish with your Line port. What did your previous setup look like? What modem were you using, and which model are you using now?
