Paradyne 8510 RADSL, 8310 MVLt manual Minor Alarms 2 Action, Link Down, Threshold

Diagnostics and Troubleshooting

Table 6-3. Minor Alarms (2 of 2)

Alarm	Action
Link Down	H If the threshold is set low (1±4) and the link is currently down, then
Threshold	there may be a local loop or Service Node problem. Check both.
(A trap	± Verify that the Service Node is powered up, is connected to the
	local loop, and has passed its self-test.
message is
	± Check the loop for continuity.
sent if the
number of	H If the threshold is set low (1±4) and the link is currently up, then an
DSL link
	event had occurred to temporarily knock out the connection. Log the
down events
	event and continue normal operation.
in 15 minutes
	H If the threshold is set high (more than 4) and the link is currently
exceeds the
selected	down, then check the Margin statistics over the past hour and day. If
value.)	the numbers are low, there may be a situation where the DSL
	modems cannot train. 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.
	H If the threshold is set high (more than 4) and the link is currently up,
	then there may be a loose connection in the loop plant, or the loop is
	barely usable. Check the Margin. If the Margin is normal, there may
	be a loose connection. If the Margin is low, try reducing the speed of
	the DSL port.

6-6 January 1999 8000-A2-GB26-10