AT&T MERLIN LEGEND Communications System Release 2.0 Maintenance And Troubleshooting Manual page 182

Central Office Problems
Step
7
Modem Port Reset:
Reset FAILED
Exit
Auditing DS1 PRI B-Channels
General Procedure:. These procedures (Auditing Lines and Auditing Calls)
initiate an audit. Once initiated, you need to wait for the far end to send a
message, which usually takes about four minutes.
After waiting four minutes, check the error logs to see if any new PRI errors
have occurred.
NOTE:
If an audit fails, call the central office to correct the problem from that end,
and then try the audit again.
Auditing Lines
If your troubleshooting indicates problems with PRI lines between the control
unit and the central office, this audit will fix the problem if successful. This
audit allows either side of the PRI interface to synchronize both ends by
exchanging messages.
Auditing Calls
If your troubleshooting indicates problems with PRI calls to or from MLX
telephones, this audit will fix the problem if successful. This audit allows either
side of the PRI interface to synchronize both ends by exchanging messages.
5-24 Checking Ports
Display Instructions
This screen appears when reset fails. Exit
and try again.