User Guide

DEFINITY Enterprise Communications Server Release 5
Maintenance and Test for R5vs/si
555-230-123
Issue 1
April 1997
Maintenance Commands and Trouble-Clearing Aids
Page 8-145display 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)
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)
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.
(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 Tone Detector
circuit pack, and up to 50 TN748s in a system. To alarm the first
occurrence of a TTR being taken out of service, set this field to 4
times the number of TN748s. If this number is set to more than three
less than the total number of TTRs, a port network with only one
TN748 could lose all of its TTRs before this alarm is raised.