DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126
Issue 4
June 1999
Maintenance Commands
8-61change system-parameters maintenance
8
Save
Translation
This field indicates on which days translation data in memory will
automatically be saved to the Mass Storage System disk and/or tape
devices during scheduled maintenance. The save operation is first
made to disk, followed by a disk backup to tape. 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. (no)
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. (no)
The system performs a Tone-Clock interchange, making the stand by
Tone-Clock active. The newly active Tone-Clock circuit pack is tested
and, while active, provides system clocks for the port network in which
it resides. The system then interchanges back to the originally active
Tone-Clock circuit pack.
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. (no)
Minimum
Threshold
for TTRs
When the number of touch tone receivers (TTRs) in service falls below
this number (4 to 200), a WARNING alarm is raised against TTR-LEV.
These are also known as dual-tone multifrequency receivers (DTMRs).
There are 4 TTRs on each TN748, TN718, TN420, or TN756; TN2182
and TN744 (suffix C or later) each have 8 TTRs. To alarm the first
occurrence of a TTR being taken out of service, set this field to the total
number of TTRs in the switch.
Table 8-7. Schedules and Settings for Maintenance Tests — Continued
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