Lucent Technologies DDM-2000 OC-3, User & Service Manual

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TAP-102
:Trouble Clearing 363-206-285
Page 5 of 14 Issue 2, February 2000
DDM-2000 OC-3 M
ULTIPLEXER
MAJOR
. MJ LED
lighted. FAULT
LED lighted on
CP.
DS1 CP failed
DS1PM CP failed
Two service DS1/DS1PM CPs
failed. Unprotected service
DS1/DS1PM CP failure. Step 45
SYSCTL CP failed
Internal circuit pack failure Step 29
OHCTL CP failed
Internal circuit pack failure Step 36
LAN CP failed
Internal circuit pack failure Replace failed
CP [DLP-523]
MAJOR
. MJ LED
lighted.
CP removed
Circuit packs removed without
doing
upd
command to remove
circuit packs from equipment
list.
Perform
upd
command to
remove circuit
packs from
equipment list.
excessive holdover
System has been in holdover
mode for more than 4 hours
because of timing ref. fail or
manual switch. Check timing
ref., check state
of eqpt.
(
rtrv-state-
eqpt:
)
inc. STS1 AIS
*
Incomplete or incorrect
cross-connect provisioning in
end-to-end network. In ring
applications, unprotected
removal or failure of DS3,
MXRVO, or STS1E CP at far
end; fiber or OLIU CP failure. TAP-120
inc. VT AIS
*
Incomplete or incorrect
cross-connect provisioning in
end-to-end network. In ring
applications, unprotected
removal or failure of
DS1/DS1PM CP at far end; fiber
or OLIU CP failure. TAP-120
inc. VT LOP
Unprotected failure of
DS1/DS1PM or MXRVO CP at
near end or far end. Replace failed
CP [DLP-523]
inc. VT sig degrade (BER)
An OLIU CP failure, or a fiber
failure at some point on the
failed ring. TAP-119
inc. VT unequipped
VT1.5 cross-connects have
been deleted in upstream
equipment interfacing with the
DDM-2000 OC-3 ring. Find the deleted
cross-connects
in the upstream
equipment.
See notes and footnotes at end of table.
Table A – Major (MJ) Alarm Conditions (Continued)
Alarm Level or
LED Indication
Trouble Description (Note) Likely causes
Step or
Procedure