ADC HDSL4 - Manual (Page 33)

LTPH-UM-1031-03, Issue 3 Monitoring System Activity and Performance
H4TU-C-319 List 1 September 12, 2003 25
M
ONITORING
S
YSTEM
A
CTIVITY AND
P
ERFORMANCE
The HDSL4 system provides the following maintenance screens for monitoring system activity and assessing
performance.
• The Monitor screens provide a graphical representation of circuit activity and allow initiation of loopbacks.
• The Performance screens provide current, 25-hour, 48-hour, and 31-day performance histories and a
continuous alarm history.
• The Event Log provides a description of the 100 most recent events which include their origin, time and date
of occurrence, and message.
S
YSTEM
O
VERVIEW
The H4TU-C-319 List 1 supports up to two doublers with three HDSL4 spans as shown in Figure 11 .
Figure 11. System Spans
The Monitor and Performance screens provide important activity and performance information about the HDSL4
spans and span devices.
U
SING THE
M
ONITOR
S
CREEN TO
V
IEW
S
YSTEM
A
CTIVITY
1 Press to view the system diagram.
Figure 12 on page 26 shows an armed circuit with an active loopback and alarms. Terms used on the system
diagram are defined in the onscreen Help menu glossary. Abnormal situations are highlighted on the diagram.
See
Table 8 on page 26 for screen field descriptions.
H4D1 H4D2 H4TU-R H4TU-C
Span 1 Span 2 Span 3
Span 1
Span 1
Span 2
2 Doublers
1 Doubler
No Doubler
Central Office
M