DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126
Issue 4
June 1999
Maintenance Object Repair Procedures
9-1238PKT-BUS (Packet Bus)
9
d. The Maintenance/Test packet bus port (M/T-PKT) has detected a Packet
Bus fault and taken corrective action by swapping to spare leads. This
error appears only in Critical Reliability systems (duplicated SPEs and
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 will result. This should be determined by
consultation with the customer. However, do not delay repairs for too long,
since the switch will not be able to recover from another packet bus failure
until the existing one is resolved.
Packet Bus Fault Isolation and Correction
in Chapter 5, ‘‘Alarms, Errors, and Troubleshooting’’
contains a
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:
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 one-minute interval since the packet bus fault
occurred.
Aux
Data Cause
1 In-line errors from packet circuit packs
2 Uncorrectable packet bus fault reported by the
Maintenance/Test packet bus port (M/T-PKT)
3 Both of the above
100
x
Packet-related circuit pack, port, and endpoint
maintenance in the EPN has been disabled due to a
packet bus failure in the PPN. The last digit has the same
meaning as the single digits listed above.
