Well at&t used to terminate in 4E's for pri, not sure about now. They should have places to monitor and if you're getting red alarm on the T1, which I don't know if you are or not, they will have an alarm history of yellow at the 4E, unless it's failing both ways. Not knowing the circuit layout or what's on it it's really hard to say. If it's failing in the local access and they can't see alarm history they would have no information. Hopefully a stress test will find it if it's in the access.
