Lucent Technologies Metropolis DMXplore, Alarm Messages And Trouble Clearing Manual

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Procedure 5-9: Clear
″
DS1 loopback (to DSX)
″
condition
....................................................................................................................................................................................................................................
Overview
This procedure is used to clear a
DS1 loopback (to DSX)
condition
indicated by a lighted Abnormal (
MN/ABN
) LED on the SYSCTL
faceplate, and reported as a Standing Condition (SC) in the
WaveStar
®
CIT Alarm List. The condition indicates that a user
initiated a DS1 facility loopback.
Important! Proper terminating and pass through
cross-connections must exist at each shelf (including stand-alone
shelves) to establish continuity for the DS1 circuit being tested.
Before you begin
Prior to performing this procedure:
1. Refer to “Before you begin” (5-5) and “Required equipment”
(5-5) in this chapter.
2. Refer to “Electrostatic discharge” (1-13) in Chapter 1, “Safety” .
Procedure Complete the following steps to clear a
DS1 loopback (to DSX)
condition.
............................................................................................................................................................
1
From the WaveStar
®
CIT System View, click the Alarm List button
and locate the
DS1 loopback (to DSX)
condition in the resulting
alarm list.
............................................................................................................................................................
2
Refer to the Probable Cause column in the alarm list, determine the
circuit pack affected, and note the corresponding AID.
............................................................................................................................................................
3
From the System View menu, select Fault
→
Loopback . Expand the
appropriate group (GRP) and VT Group, then select the affected DS1
port and click
Select .
Result:
The loopback parameters appear.
............................................................................................................................................................
4
Select
Release
and
Facility
, then click
Apply
.
Trouble clearing procedures
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365-372-333 R2.1
Issue 4, June 2005 Lucent Technologies 5 - 3 5