Lucent Technologies DDM-2000 OC-3 User Manual

TAP-102 :Trouble Clearing 363-206-285
Page 3 of 14 Issue 2, February 2000
DDM-2000 OC-3 MULTIPLEXER
Table A – Major (MJ) Alarm Conditions
Alarm Level or
LED Indication Trouble Description (Note) Likely causes
Step or
Procedure
MAJOR. MJ LED
lighted.
BBF5 required in LS-8 A BBF5 JMPR CP is missing
from a shelf (Group 3 or earlier)
with two 27G-U OLIU circuit
packs in a FUNCTION UNITS
slot pair.
Install BBF5
JMPR CP in slot
8(P) of the LOW
SPEED GROUP
associated with
the FUNCTION
UNITS slots
where the27G-U
OLIUsare
installed.
BBF5 required in LS-4 A BBF5 JMPR CP is missing
from a shelf (Group 3 or earlier)
with two 27G2-U OLIU circuit
packs in a FUNCTION UNITS
slot pair.
Install BBF5
JMPR CP in slot
4(P) of the LOW
SPEED GROUP
associated with
the FUNCTION
UNITS slots
where the
27G2-U OLIUs
are installed.
CP not allowed - (eqpt) A DS1/DS1PM CP is installed in
a LOW SPEED slot associated
with a FUNCTION UNITS slot
provisioned for DS3, STS1E_L
low speed, or OLIU CP service.
Remove DS1CP
or change
function unit to
MXRVO or
STS1E_H CP
high speed.
ExternalMinor
*
External minor alarm
(environmental alarm input 15)
is active. DC power or cooling
fan in RT failed.
Clear trouble
using local
procedures.
environment
n
*
An environmental alarm point
(miscellaneous discrete input) is
active.
Clear trouble
using local
procedures.
frequency error The DS1 external timing
reference or the timing from a
remote shelf has a frequency
offset greater than 20 hertz.
Check the DS1
external timing
source or the
timing obtained
from a remote
shelf.
See notes and footnotes at end of table.

Lucent Technologies DDM-2000 OC-3 Specifications

General

Brand	Lucent Technologies
Model	DDM-2000 OC-3
Category	Multiplexer
Language	English