ADC H4TU-C-319 List 1 Line Unit user manual Alarm History at the HDSL4 Interface

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

Alarm History at the HDSL4 Interface

The HDSL4 Alarm History screens report alarms for the HDSL4 interface at the H4TU-C and H4TU-R. Figure 24 shows the H4TU-C HDSL4 alarm history. Table 12 describes the alarms that are reported at the H4TU-C or H4TU-R.

Monitor	Performance	Event Log Config	Inventory Report Rlogon	Help
		H4TU-C HDSL	Alarm History

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Alarm		First	Last	Status	Count
LOSW-LP1		01/15/02 16:45	01/15/02 16:45	OK	1
MAL	-LP1	01/15/02 16:44	01/15/02 16:44	OK	1
LA	-LP1			OK	0
HBER-LP1		01/15/02 16:45	01/15/02 16:45	DISABLED	0
LOSW-LP2				OK	1
MAL	-LP2			OK	0
LA	-LP2			OK	0
HBER-LP2				DISABLED	0
SHORT				OK	0
GND				OK	0
OPEN				OK	0

Press: C(l)ear Alarm History-

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Use <Space>	to cycle through		Interface :	H4TU-C HDSL
choices and	<Enter> to	view	Statistics :	Alarm History
ID: xxxx--	xxxx--xxxx--	xxxx	02/01/2002 12:30:01	H4TU-C	System: Alarm

Figure 24. H4TU-C HDSL Alarm History Screen

		Table 12. HDSL4 Alarm Descriptions
Screen Alarm	Front-Panel Alarm	Description
HDSL4 Alarms at the H4TU-C and H4TU-R
LOSW	SPNn-LOSW	Loss of Sync Word—The HDSL4 loop has lost synchronization.
MAL	xxxx-MALx	Margin—The margin on the HDSL4 loop has dropped below the minimum threshold
		value set for the system.
		xxxx denotes TUC, TUR, or first (DU1U/DU1D) or second (DU2U/DU2D) doubler HDSL4
		upstream or downstream interface. If TUC and TUR occur at the same time, then TUC
		displays. The single x indicates Loop 1 or Loop 2.
LA	xxxx-LAx	Loop Attenuation—The attenuation on the HDSL4 loop has exceeded the maximum value
		set for the HDSL4 loop attenuation threshold.
		xxxx denotes TUC, TUR, or first (DU1U/DU1D) or second (DU2U/DU2D) doubler HDSL4
		upstream or downstream interface. If TUC and TUR occur at the same time, then TUC
		displays. The single x indicates Loop 1 or Loop 2.
HBER	xxxx-HBRx	Block Error Rate—The HDSL4 BER has exceeded the set threshold limits of 10-6or 10- 7.
		xxxx denotes TUC, TUR, or first (DU1U/DU1D) or second (DU2U/DU2D) doubler HDSL4
		upstream or downstream interface. If TUC and TUR occur at the same time, then TUC
		displays. The single x indicates Loop 1 or Loop 2.

HDSL4 Alarms at the H4TU-C only

SHORT (a)	PWR FEED SHRT	Indicates a short between Loop 1 and Loop 2 of the HDSL4 pair.
GND (a)	PWR FEED GND	One of the HDSL4 loops is grounded.
OPEN (a)	PWR FEED OPEN	Indicates a line power open condition.

(a) Displays only at the H4TU-C HDSL interface.

H4TU-C-319 List 1 September 12, 2003 37