ADC H4TU-C-319 List 1 Line Unit Monitoring System Activity and Performance, System Overview

LTPH-UM-1031-03, Issue 3 Monitoring System Activity and Performance

MONITORING SYSTEM ACTIVITY AND PERFORMANCE

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.

SYSTEM OVERVIEW

The H4TU-C-319 List 1 supports up to two doublers with three HDSL4 spans as shown in Figure 11.

Central Office

H4TU-C

Span 1

Span 1

H4D1		H4D2
	Span 2		Span 3
	Span 1	Span 2

H4TU-R

2Doublers

1Doubler No Doubler

Figure 11. System Spans

The Monitor and Performance screens provide important activity and performance information about the HDSL4 spans and span devices.

USING THE MONITOR SCREEN TO VIEW SYSTEM ACTIVITY

1Press M 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.

H4TU-C-319 List 1 September 12, 2003 25