Log onto the redback and run the following command:

[local]spkdsl>atm pi ch en 3/0 0 1006
[atm end to end ping]

[local]spkdsl>atm pi ch seg 3/0 0 1006
[segment ping]

how is the customer provisioned?

[local]spkdsl>sho bind sub

[local]spkdsl>sho sub addr

these will give you info about what pvc and IP address this user is bound too. if you see ANYTHING out of the ordinary here, its worth looking into.

[local]spkdsl>sho atm pvc 3/0 0 1006

This shows the stats for the pvc 0.1006, such as bytes received, bytes sent, and crc errors.

note: ATM ping always fails for 144 lines