Avaya Definity SI Maintenance Manual page 215

Duplication Concepts
Bus so that it does not attempt to control the Packet bus, and thus interfere with
the Active SPE Packet Control circuit pack. The Standby SPE PROCR
(Processor) is held in a reset state so that it does not run software. Finally,
Standby SPE is being shadowed into from Active SPE Memory
Standby SPE Memory is updated to reflect every change in Active SPE Memory
(for example, calls and administration changes). In Standby Mode, the Standby
SPE is available to assume the role of the Active SPE.
In certain circumstances, the Standby SPE is put into Maintenance Mode by the
Active SPE. In this mode, the Standby SPE is still isolated from the TDM and
Packet Buses, but is no longer having its Memory shadowed into; its Processor is
no longer held in a reset state. In Maintenance Mode, the Standby SPE accepts
maintenance activity requests from the Active SPE to perform testing on Standby
SPE components. For many of the requested activities, system software on the
Standby SPE is brought up to conduct the activity. Translation saves and
announcement saves may be performed on the Standby SPE when it is in
Maintenance Mode. While in Maintenance Mode, the Standby SPE is not as
readily available to assume the role of the Active SPE, but may do so depending
on the severity of the Active SPE fault(s).
In Busyout Mode, the Standby SPE is busied out by the busyout SPE-standby
command. Only system technician-requested activities are carried out on the
Standby SPE until a release SPE-standby command is executed. Refer to the
status system command in
Trouble-Clearing Aids''
Standby SPE is returned to Standby Mode from Maintenance Mode, its Memory is
refreshed.
NOTE:
Verify that the Standby SPE is functional (no duplication alarms exist and
the SPE has returned to the Standby Mode) by running the status system 1
command. If the standby SPE is in the maint/idle mode with no standby
alarms, use the standby refresh command to put the standby SPE into the
standby mode. Verify the results by using the status system 1 command.
For more information about the status system command see
''Maintenance Commands and Trouble-Clearing
NOTE:
The system software automatically returns the Standby SPE from
Maintenance Mode to Standby Mode at the completion of any maintenance
activity. However, it is also possible to force the Standby SPE to return to
Standby Mode by issuing the refresh spe-standby command from the
G3MT terminal. The refresh spe-standby command preempts Standby
SPE Maintenance Mode except that of entering maintenance mode. See the
''System Technician Commands for High and Critical Reliability Systems''
section for a description of the refresh spe-standby command.
555-233-123
Chapter 8, ''Maintenance Commands and
for information concerning Standby Modes. Whenever the
—
meaning that
Chapter 8,
Aids''.
Issue 4 May 2002 6-11