NTP-017: Circuit Order 363-206-285
Page 1 of 4 Issue 2, February 2000
DDM-2000 OC-3 MULTIPLEXER
Discontinue End-to-End HDSL Service
DO ITEMS BELOW IN ORDER LISTED. . . . . FOR DETAILS, GO TO
1.
!
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 HDSL ports are to be discontinued and verify no
alarms exist on the system.
2.
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 cross-connect point for the HDSL terminating nodes,
remove the HDSL signals associated with the port(s) being
discontinued. (FAULT LEDs begin flashing on HDSL circuit pack
with signals removed.)
3.
NOTE:
The UPD/INIT pushbutton on the SYSCTL is recessed to
prevent its accidental operation. You will need a small
pointed object such as a ball-point pen to operate it.
Momentarily depress the UPD/INIT buttonontheSYSCTL at the
HDSL terminating nodes or use the upd command to update the
equipment list. (Flashing FAULT LEDs go off.)
4. Use the rtrv-state-eqpt: command to verify that the right
port has been changed from
in-service
(i)to
auto
(a) state.
5.
!
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.
TAD-100
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