ADC H4TU-C-319 List 1 Line Unit, HDSL4 user manual Front-Panel Alarm Description, Prmn

LTPH-UM-1031-03, Issue 3Testing

Table 15. Front-Panel System Alarms (Continued)

Front-Panel	Alarm	Description	To Inhibit:
Message (a)

RRAI	Remote RAI—Remote
	Alarm Indication at the
	H4TU-R (Net signal
	has errors.)

Indicates an RAI alarm (yellow) from the CPE Cannot be inhibited. with errors from the line unit or network.

xxx-DBER	DS1 Bit Error Rate	The DS1 BER has exceeded the set 24-hour	Select DIS for the DBER system option.
		threshold limit of approximately 10-6. (xxx
		denotes either TUC or TUR. If TUC and TUR
		occur at the same time, then TUC displays.)
xxx-LOF	Loss of Frame	The DS1 input does not contain the ESF or SF	Change FRMG option to AUTO or UNFR.
		frame pattern setting of the FRMG option.
		(xxx denotes either TUC or TUR. If TUC and
		TUR occur at the same time, then TUC
		displays.)
PRMN	Performance Report	H4TU-R PRM-NE BER threshold has been	Set DBER threshold to DIS.
	Messaging - Near End	exceeded.
PRMF	Performance Report	H4TU-R PRM-FE BER threshold has been	Set DBER threshold to DIS.
	Messaging - Far End	exceeded.
xxxx-HBRx (d)	HDSL4 Block Error	The HDSL4 BER has exceeded the set	Select NONE for the HBER system option.
	Rate	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.
xxxx-MALx (d)	Margin Alarm	The margin on the HDSL4 loop has dropped	Set the Margin Alarm Threshold option to
		below the minimum threshold value set for the	zero.
		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.
xxxx-LAx (d)	Loop Attenuation	The attenuation on the HDSL4 loop has	Set the HDSL4 Loop Attenuation
		exceeded the maximum value set for the	Threshold option to zero.
		HDSL4 loop attenuation threshold.

xxxxdenotes 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.

(a)The message, ALRM, displays prior to any alarm message.

(b)Message displays repeatedly as long as the alarm condition exists and is not included in the priority order.

(c)When the HDSL4 loop loses sync word (LOSW), a system alarm condition exists. However, since the H4TU-C-319 enters the acquiring mode, the front-panel status LED flashes red, and the ACQ or SIG message displays instead of the ALRM message.

(d)Only these alarms assert the System Alarm bus on pin H of the card-edge connector, if the ALM option is set to enabled.

H4TU-C-319 List 1 September 12, 2003 43