ADC H2TU-C-231 Manual De Usuario
LTPH-UM-1109-01, Issue 1
Monitoring System Activity and Performance
H2TU-C-231 List 2
January 9, 2002
35
Alarm History at the HDSL2 Interface
The HDSL2 Alarm History screens report alarms at the H2TU-C and the H2TU-R.
shows the H2TU-C
HDSL2 alarm history and
below describes the alarms that are reported at the H2TU-C-231 or H2TU-R.
Figure 23.
H2TU-C HDSL2 Alarm History Screen
Table 12.
HDSL2 Alarm Descriptions
Screen Alarm
Front-Panel Alarm Description
HDSL2 ALARMS at the H2TU-C and H2TU-R
LOSW
LOSW
Loss of Sync Word—The HDSL2 loop has lost synchronization.
MAL
xxx-MAL
Margin—The margin on the HDSL2 loop has dropped below the minimum threshold value
set for the system. (xxx denotes either TUC or TUR.)
set for the system. (xxx denotes either TUC or TUR.)
LA
xxx-LA
Loop Attenuation—The attenuation on the HDSL2 loop has exceeded the maximum value
set for the HDSL2 loop attenuation threshold. (xxx denotes either TUC or TUR.)
set for the HDSL2 loop attenuation threshold. (xxx denotes either TUC or TUR.)
HBER
xxx-HBER
Block Error Rate—The HDSL2 BER has exceeded the set threshold limits of
10
10
-6
or 10
- 7
. (xxx denotes either TUC or TUR.)
HDSL2 ALARMS at the H2TU-C only
SHORT
PWR FEED SHRT
Indicates a short between the Tip and Ring of the HDSL2 pair.
GND
PWR FEED GND
The HDSL2 loop is grounded.
OPEN
PWR FEED OPEN
Indicates a line power open condition.
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H2TU-C HDSL2 Alarm History
-----------------------------------------------------------------------------
Alarm
First
Last
Status
Count
LOSW
OK
0
MAL
OK
0
LA
OK
0
HBER
09/01/01 00:37
09/01/01 00:45
OK
7
SHORT
OK
0
GND
OK
0
OPEN
OK
0
Press: C(l)ear Alarm History
------------------------------------------------------------------------------
Use <Space> to cycle through
Interface
:
H2TU-C HDSL2
choices and <Enter> to view
Statistics :
Alarm History
ID: xxxx--xxxx--xxxx--xxxx
09/01/2001 12:30:01
H2TU-C
System: Alarm