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display system-parameters maintenance
Issue 4 May 2002 8-117 555-233-123
Scheduled Maintenance
A series of maintenance tests and operations runs automatically every day
according to the schedule and settings specified in the following fields.
Start Time
The hour and minute (24-hour notation) at which daily
scheduled maintenance begins. (22:00)
Stop Time
Time (hour and minute) when scheduled daily maintenance
stops. If any daily maintenance operations are not completed
by this time, the system notes where in the sequence it
stopped and performs those operations during the next
scheduled daily maintenance.
Daily
Maintenance
The series of tests that are always run by maintenance
software as part of daily maintenance. (display-only field)
Save Translation
This field indicates on which days translation data in memory is
automatically saved to the flash card, MSS disk, and/or tape
devices during scheduled maintenance. On systems with
duplicated SPEs, translation data is saved on both SPEs. Valid
entries are daily, days of the week, or no. “No” specifies that
no automatic saves are to be executed. (daily)
Control Channel
Interchange
Each port network has a pair of TDM busses called A and B,
each of which has a set of time slots dedicated to use by the
control channel. At any one time, the control channel in each
PN is carried on only one of the two busses. This field indicates
on which days the control channel in each port network will be
switched from one of the paired TDM busses to the other. Valid
entries are daily, days of the week, or no. “No” specifies that
no interchange be executed. (n)
System Clocks
Interchange
On High and Critical Reliability systems, this option causes a
Tone-Clock interchange in each port network with duplicated
Tone-Clock circuit packs. Each port network interchanges into
the standby Tone-Clock for 20 seconds and then back to the
Tone-Clock that was originally active. This field indicates on
which days the interchanges are to take place. Valid entries
are daily, days of the week, or no. “No” specifies that
interchanges be executed. (n)
SPE Interchange
On systems with duplicated SPEs, this field indicates on which
days an SPE interchange will be executed during scheduled
maintenance. Valid entries are daily, days of the week, or no.
“No” specifies no scheduled interchanges. (n)
EXP-LINK
Interchange
This field indicates whether or not the expansion links between
port-networks are interchanged as part of scheduled
maintenance. The value “daily'' means that EXP-LINK
interchange occurs automatically everyday. The value “no''
means that EXP-LINK interchange is not done automatically as
part of scheduled maintenance. Values represented by the
days of the week mean that EXP-LINK interchange occurs
automatically on the specified day only. Since EXP-LINK
interchange only applies to duplicated systems, simplex
systems do not display this field. (n)