NTP-032: Circuit Order 363-206-285
Page 3 of 6 Issue 2, February 2000
DDM-2000 OC-3 MULTIPLEXER
DO ITEMS BELOW IN ORDER LISTED. . . . . FOR DETAILS, GO TO
7.
!
CAUTION:
DDM-2000 circuit packs contain static sensitive components
which can be damaged by electrostatic discharge. A static
ground wrist strap must be worn when handling the circuit
packs. See electrostatic discharge considerations in
Trouble
Clearing: TAD-100
.
Determine which LAN ports are to be discontinued and verify no
alarms exist on the system.
8.
NOTE:
The following operation may activate the office major, minor,
or no alarm. The audible alarm may be suppressed by
depressing the ACO button.
At the LAN terminating nodes, remove the LAN signals by
removing the LAN cable from the RJ45 or optical connector on the
faceplate of the IMA LAN circuit pack. (FAULT LEDs begin
flashing on IMA LAN circuit pack with signals removed).
9.
!
CAUTION:
Removing the wrong cross-connection may cause service
interruption. Use the
rtrv-crs-( )
command to
determine the proper cross-connections.
From work order or rtrv-crs-( ) command, determine the
DS1 (VT1.5) cross-connections for circuit being discontinued.
10.
NOTE:
LOW SPEED slots cannot be unequipped without an alarm
until all port cross-connections are removed. The
cross-connections must be removed first before removing
circuit packs. In a ring configuration, remove the
cross-connections from the terminating nodes first, then
remove the pass-through cross-connections at the
intermediate nodes. A Major alarm may occur when the first
cross-connection at the terminating node is deleted and
clear when the other terminating cross-connection is
deleted.
TAD-100
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