Avaya Definity SI Maintenance Manual page 1602

Maintenance Object Repair Procedures
d. The system detected an excessive backup of traffic on the Active
Expansion Link. This condition may have been due to communication
difficulties on the Expansion Link. To restore normal service, the system
had to reset the Expansion port network served by the Expansion Link.
Error type 10004 should have been logged against the Expansion Interface
circuit pack that reported the traffic congestion.
e. Aux Data value of 8 means that the link is down due to the recovery feature
of the EPN Sanity Audit. Look for EPN-SNTY errors in the error log, and
refer to the EPN-SNTY section for more details.
10-816 Issue 4 May 2002 555-233-123