[Al Skierkiewicz]

D,
DSL is a tricky thing, the phone company should be able to test the line and see if it returns any errors like ground faults, imbalances or high impedance or high shunt capacitance. Have they switched you to a different trunk that now routes you over to the other side of town and exceeding the max DSL distance? If they did some rerouting, they may have also failed to remove the previous wiring which looks like a shorted stub to DSL signals. They should be able to perform those tests while they are on the phone or certainly within a few minutes. At your end there may be a loose wire or a wire sitting in some water. Do you have a phone connected to this line? How does it sound? Pick up the phone and dial one number and listen when the dial tone is gone. You should hear very little noise, hum or other conversations. If you do, there is something wrong with the line between you and the central office. Does the modem try to acquire the line? Is it going through the normal boot sequence when you first power on? Did someone install a wireless phone or other RF generating device? Some modems are sensitive to this although I have a wireless phone and my ham shack in the same room as the modem with no problems. Depending on your provider they may be using a local vendor for connection services. I had Earthlink who used Covad locally for connection to the phone hardware. If this is the case, see if you can get in contact with the vendor engineering people and see if anything new equipment has been installed and if it was installed about the same time as your failure. Have you tried taking your modem to the failure point to double check? Were you using the same power supply when you checked at home?