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EXP-INTF (Expansion Interface Circuit Pack)
Issue 4 May 2002 10-777 555-233-123
4. An EPN Maintenance circuit pack error may have been detected.
Examine the Error Log for MAINT errors with the same approximate
time as this error. MAINT Error Type 2561 indicates that the Active
Expansion Interface circuit pack on the EPN could not communicate
with the EPN Maintenance circuit pack. MAINT Error Type 3329
means the EPN Maintenance circuit pack cannot talk to the EPN
Expansion Interface circuit pack in the A carrier. MAINT Error Type
3585 means the EPN Maintenance circuit pack cannot talk to the
EPN Expansion Interface circuit pack in the B carrier.
5. Synchronization (SYNC) maintenance may have detected an
inability of the Active Expansion Interface Link to provide
synchronization between cabinets. Examine Error Log for SYNC
Error Type 2305 with the same approximate time as this error.
x. Error Type 11000 with an Aux value of 2 appears when a system
technician-demanded Expansion Interface Link Switch is issued. No further
action is required.
y. Error Type 11000 with an Aux value of 3 appears when a scheduled EI Link
Switch has occurred. No further action is required.
z. Error Type 11000 with an Aux value of 4 appears when an Expansion
Interface Link Switch has occurred due to a Special EPN recovery strategy.
The software has forced an Expansion Interface switch because the new
Expansion Interface Link contains new features which support EPN
recovery in case of a bad tone/clock board. This error code appears when
there is a periodic/scheduled tone/clock switch.
aa. Error Type 11000 with an Aux value of 5 appears when the system has
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 switched Expansion
Links to the link identified in the Error Type 11000 with an Aux Data value
of 5. Error Type 10004 should be present against the Expansion Interface
circuit pack that reported the traffic congestion.
ab. Error type 11000 with an Aux value of 8 indicates that the EI link was
switched as part of the recovery action taken by EPN-SNTY. This error
should be accompanied by EPN-SNTY error 8802 0. If EPN-SNTY error
9902 0 is also present, this indicates that the switching of the EI link was
the recovery action that restored sanity to the EPN. In this case, the fault
was with the link that was switched away from. The relevant EIs and
connections should be tested and examined to determine the cause of the
problem. Look for EPN-SNTY errors in the error log, and refer to the EPN
Sanity Audit (EPN-SNTY) section for more details.
ac. Error Type 11001 occurs when an Expansion Link switch was attempted
but for unknown reasons could not be completed.