Avaya S8700 Maintenance Manual page 1955

PKT-BUS (Packet Bus)
d. The Maintenance/Test packet bus port (M/T-PKT) has detected a Packet
Bus fault and has taken corrective action by swapping to spare leads. This
error appears only in high/critical-reliability systems (duplicated PNC). The
Aux Data value indicates the number of faulty leads. If this is the only
active error against the packet bus, the packet bus is still in service. Due to
the disruptive nature of the packet bus Fault Isolation and Correction
procedures, repairs should be deferred until a time when the least
interruption in service would result. This should be determined by
consultation with the customer. However, do not delay repairs for too long,
since the switch cannot recover from another packet bus failure until the
current one is resolved.
page 4-81
sub-section, A Special Precaution Concerning the TN771D that describes
how to ensure that the TN771D is providing correct information. A new
TN771D may need to be taken to the customer site.
e. The Maintenance/Test packet bus port (M/T-PKT) has detected open leads
on the packet bus. The Aux Data value indicates the number of open
leads.
f. Packet circuit pack, port, and endpoint maintenance has been disabled due
to a packet bus failure. The Aux Data value indicates the cause:
Aux
Data
1
2
3
100x
Keep in mind that although only packet circuit packs can detect and report
packet bus problems, such problems can be caused by any circuit pack.
g. Packet circuit pack, port, and endpoint maintenance has been disabled due
to more than one circuit pack reporting in-line errors. If this occurs more
than three times in 15 minutes a Minor alarm is raised against the packet
bus. This happens when maintenance is disabled due to errors and is then
re-enabled because no more errors are reported.
This error may still be present in the error log even though the Packet
Circuit Pack Audit test (#573) indicates that only one circuit pack is
reporting a problem. This happens when more than one circuit pack has
reported errors in any 1-minute interval since the packet bus fault occurred.
555-233-143
''Isolating and Repairing Packet-Bus Faults'' on
in Chapter 4, ''Alarms, Errors, and Troubleshooting''
Cause
In-line errors from packet circuit packs
Uncorrectable packet bus fault reported by the
Maintenance/Test packet bus port (M/T-PKT)
Both of the above
Packet-related circuit pack, port, and endpoint
maintenance in the PN has been disabled due to a packet
bus failure in the PN. The last digit has the same meaning
as the single digits listed above.
contains a
Issue 1 May 2002 8-1233