Avaya S8700 Maintenance Manual page 223

PKT-BUS (Packet Bus)
This section on the PKT-BUS MO is limited to a description of the Error and Alarm
Log entries and the test sequence for the packet bus. The following list
summarizes some of the important points to consider when working with the
packet bus.
The Maintenance/Test circuit pack (TN771D) is a critical tool for isolating
packet bus faults. The circuit pack may be included as a customer option.
If a TN771D is absent, one must be taken to the customer site to allow for
proper fault isolation. The
section in
Packet Bus testing facilities of the TN771D and when one must be taken to
the customer site.
Certain catastrophic packet-bus faults have an effect on maintenance
software activities relating to packet circuit packs, ports, and endpoints:
— Packet circuit pack (BRI-BD, PGATE-BD, PDATA-BD, UDS1-BD)
— Port-level (BRI-PORT, ABRI-PORT, PGATE-PT, PDATA-PT) in-line
— Circuit pack and port in-line errors that are not relevant to the Packet
— Periodic and scheduled background maintenance are not affected.
— Foreground maintenance (for example, a test board command
The actions in the previous list serve to reduce the system load, which
could become excessive if many MOs are affected by a packet bus failure.
However, such an excessive load should in no way impede the isolation
and the correction of the faults.
When the above actions are implemented, Error Type 3329 is logged
against PKT-BUS, and a Warning alarm is raised. Other Packet Bus errors
may raise more severe alarms, thereby overriding the Warning alarm.
555-233-142
''Isolating and Repairing Packet-Bus Faults''
Chapter 4, ''Alarms, Errors, and Troubleshooting''
in-line errors indicating possible Packet Bus test failures are logged
in the error log, but are not acted upon.
errors on Packet circuit packs which indicate possible Packet Bus
failures are not logged or acted upon.
Bus, or that indicate a circuit pack failure, are acted upon in the
normal fashion.
executed at a terminal) is not affected.
describes the
Issue 1 May 2002 8-919