My guess in this instance is that there is an imbalance on the line that isn't present at the NID because it is due to a high-resistance open (faulty splice on one side of the cable pair). That additional bit of inside wiring added to the circuit is just enough to bring out the noise. If it's clear at the NID and not after the inside wiring is connected, you're going to have a hell of a time getting the telco to accept responsibility.


Ed Vaughn, MBSWWYPBX