363-206-305 Trouble Clearing:
TAP-102
Issue 3, June 2000 Page 5 of 14
DDM-2000 F
IBER
R
EACH
W
IDEBAND
S
HELF
MAJOR.
MJ
LED
lighted.
inc. VT LOP Unprotected failure of
DS1
,
DS1PM
,
or
T1EXT
circuit pack at near end or
far end; unprotected failure of
MXRVO
circuit pack at far end;
unprotected failure of OC-1, OC-3, or
OC-12
OLIU
circuit pack at near end
or far end; unprotected failure of both
OC-1, OC-3, or OC-12
OLIU
circuit
packs at far end.
Replace failed circuit pack
[DLP-523]
inc. VT sig
degrade (BER)
An OLIU circuit pack failure or a fiber
failure at some point on the failed
ring.
TAP-111
inc. VT
unequipped
VT1.5 cross-connects have been
deleted in upstream equipment
interfacing with the DDM-2000 OC-1,
OC-3, or OC-12 ring.
Find the deleted cross-connects in
the upstream equipment.
Table A – Major (MJ) Alarm Conditions (Continued)
Alarm Level
or LED
Indication
Trouble Description
(Note) Likely Causes Step or Procedure
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