Paradyne 8546, 8540 manual Minor Alarms 1 Failure Type Action, Margin, Threshold

Diagnostics and Troubleshooting

Minor Alarms

Use Table 8-4 to determine the appropriate action to take for each Minor Alarm.

Table 8-4. Minor Alarms (1 of 2)

Failure Type

Action

Config Error:	1. Check the Selftest Results display by following the menu sequence:
	Diagnostics → Selftest.
	2. Do another Selftest (Reset) and check results.
	± If the results are normal, the problem was transient. Log the
	results.
	± If Selftest results still show configuration corruption, there is a
	card problem. The card's non-volatile RAM should be erased and
	the configuration reentered. Perform a configuration download.
	± If the configuration has not been saved, use reset and erase
	NVRAM to force the card to the factory default. Enter the basic
	default route to the MCC and reconfigure the card manually.

NOTE: The following are minor alarms where thresholds have been exceeded and are primarily indications of degraded quality on the DSL loop. They are not necessarily related to problems with the DSL card.

Margin	H If DSL speed is set to a Fixed Rate, you may choose to lower the
Threshold	speed in the direction indicated by the threshold alarm (Fixed Up
(A trap	Speed or Fixed Down Speed) to get a better Margin and improved
message sent if	error performance.
margin falls	H If DSL speed is set to Rate Adaptive and the Margin Threshold is
below selected
	> 0, then this alarm is a warning that the loop has degraded. The
value.)
	actual bit rate should still be above 10 -7. This condition may be
	temporary due to high temperature or humidity/rain, or it may be
	permanent due to high noise from additional digital circuits installed
	in the same cable bundle.
	H If DSL speed is set to Rate Adaptive and the Margin Threshold is
	< 0, then this alarm is a warning that the loop has seriously
	degraded. The actual bit rate may be below 10 -7. This condition
	may be temporary or permanent. However, if it persists, the loop
	may have to be reengineered for better performance by performing
	one of the following:
	± Remove bridge taps
	± Change cable gauge on a cable section
	± Run new cable
	± Remove other noise-generating digital circuits from the cable
	bundle

8-8 November 1997 8000-A2-GB20-20