ADC H2TU-C-388 Alarm History at the HDSL2 Interface

152-388-100-02, Issue 2 Monitoring System Activity and Performance

Alarm History at the HDSL2 Interface

Figure 23 shows the H2TU-C HDSL2 alarm history, and Table 12 describes the alarms.

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	System: Alarm

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
		10-6or 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.

H2TU-C-388 List 1 June 6, 2000 33