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152-388-100-02, Issue 2 Monitoring System Activity and Performance
H2TU-C-388 List 1 June 6, 2000 33
Alarm History at the HDSL2 Interface
Figure 23 shows the H2TU-C HDSL2 alarm history, and Table 12 describes the alarms.
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 MAL Margin—The margin on the HDSL2 loop has dropped below the minimum threshold value
set for the system.
LA LA Loop Attenuation—The attenuation on the HDSL2 loop has exceeded the maximum value
set for the HDSL2 loop attenuation threshold.
HBER HBER Block Error Rate—The HDSL2 BER has exceeded the set threshold limits of
10
-6
or 10
- 7
.
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.
Monitor Performance Event Log Config Inventory Rlogon Help
H2TU-C HDSL2 Alarm History
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Alarm First Last Status Count
LOSW 04/03/00 00:00 04/03/00 00:45 ALARM 12
MAL OK 0
LA OK 0
HBER 04/03/00 00:37 04/03/00 00:45 OK 7
SHORT OK 0
GND OK 0
OPEN OK 0
Press: C(l)ear Alarm History
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Press <Space> to cycle through Interface : H2TU-C HDSL2
choices and <Enter> to view Statistics : Alarm History
ID: xxxx--xxxx--xxxx--xxxx 04/15/00 12:30:01 H2TU-C S
y
stem: Alarm