Lucent DDM-2000 OC-3 User And Service Manual page 705

363-206-285
Issue 2, February 2000
Table A – Obscure Minor Alarm Conditions
Description
APS - automatic lock
APS channel failed
ExternalMinor
environmentxx
protected CP removed
unexpected CP type
unexpected CP switches
14.
NOTE:
There is an automatic lock. An automatic lock occurs when an automatic
protection switch is made and then broken four times within a 10-minute
interval.
From the Alarm and Status Report, determine the source address of the DS1
circuit pack locked onto the protection DS1.
15. !
CAUTION:
When a DS1 is switched to protection, removal of any other DS1 circuit
pack or 177A Retainer Card in the same group will result in a loss of
service to the protected DS1 and the removed DS1 circuit pack.
Replace DS1 service circuit pack locked onto protection.
Reference: DLP-523
16. STOP. YOU HAVE COMPLETED THIS PROCEDURE.
Meaning
Service associated with a DS1 circuit
pack has been automatically switched
and locked onto the protection DS1
circuit pack. The APS lock will remain
active until midnight.
The APS channel on the protection
OC-3 line has failed.
DC power or fan failure at a remote
terminal far end.
A miscellaneous discrete input is active.
This message may be changed using
the set-attr-env: command. The
description may be an alphanumeric
string up to 26 characters long (for
example, Fire, Open door, etc.).
A circuit pack previously installed in the
system is removed. The pack should be
replaced or an update (upd) should be
done to remove it from the equipment
list.
A circuit pack is installed in a slot
provisioned for a different circuit pack,
or switch settings have been changed
from what they were before the circuit
pack was removed.
DDM-2000 OC-3 M
Trouble Clearing:
ULTIPLEXER
TAP-113
Page 3 of 6
Step
Step 14
Step 17
TAP-114
Step 19
Step 21
Step 23